The networking
checklist lists the networking changes required for your system, depending on
your DNS configuration and whether or not you enable public access (allowing
users to host or attend meetings from the Internet or a mobile device).
Choose the appropriate
checklist depending on whether you are using automatic system deployment
(recommended for 50, 250, or 800 user deployments) or manual system deployment
(required for a 2000 user deployment).
All virtual
machines, including the Internet Reverse Proxy, are in your internal network
(easiest configuration)
Networking Checklist for an Installation or Expansion, with an Automatic Deployment and Public Access
Virtual Machine
Deployment
In
an automatic deployment, we deploy all the virtual machines (other than the
Admin virtual machine) for you. We recommend that you choose an automatic
deployment if you are deploying a 50, 250, or 800 user system.
Verify that the Media virtual machine (if applicable) is on the
same subnet as the Admin virtual machine.
Verify that the Internet Reverse Proxy virtual machines are in
your internal network.
Verify that the ESXi hosts for all your virtual machines
(including the Internet Reverse Proxy) are managed from the same VMware
vCenter.
Required IP
Addresses
Description
Network Location
IP Address
Real IP address of the Admin
virtual machine
Internal
Real IP address of the Media
virtual machine (if applicable)
Internal (same subnet as Admin virtual machine)
Real IP address of the Internet Reverse Proxy
Internal (may be on the same
subnet as Admin virtual machine)
Administration URL (used exclusively by the system. Maps to the
private VIP address)
Internal (same subnet as Admin virtual machine)
Webex site URL (used exclusively by the system. Maps to the public VIP address)
Internal (same subnet as the Internet Reverse Proxy). This IP
address must be publicly routable.
Real IP address of the HA Admin virtual machine (if applicable)
Internal (same subnet as
primary system Admin virtual machine)
Real IP address of the HA Media virtual machine (if applicable)
Internal (same subnet as
primary system Admin virtual machine)
Real IP address of the HA Internet Reverse Proxy (if applicable)
Internal [same subnet as the
primary system Internet Reverse Proxy (but can use NAT with a private IP
address)]
DNS
Configuration
Update the DNS server as follows. There are some limitations for the hostname portion of the Webex site URL and the Administration
site URL. For a list of the words that you cannot use, see Webex Site and Webex Administration URLs.
Task
Examples
Hostnames and IP addresses of the internal virtual machines:
Admin virtual machine and, if applicable, the Media virtual machine.
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
Hostname and IP address for
the Internet Reverse Proxy virtual machine.
Enable Layer 3 routing between the internal and DMZ networks.
Internal Subnet <internal-subnet>/24
DMZ
Subnet <DMZ-subnet>/24
Verify that the Public VIP
address and the Internet Reverse Proxy virtual machines are on the same subnet.
[As you are deploying all your system virtual machines internally (the Internet
Reverse Proxy is not in the DMZ), this subnet must be in the internal network.]
<Public-VIP-address>
<IRP-vm-FQDN>
<IRP-vm-IP-address>
Verify that the Private VIP
address and internal virtual machines are on the same subnet.
<Private-VIP-address>
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
Networking Checklist for an Installation or Expansion, with a Manual Deployment, Public Access, and All Internal Virtual Machines
Virtual Machine Deployment
In a manual deployment, you create all the virtual machines for your system using the OVA wizard from your vSphere client.
You then install your system using a manual deployment.
You must choose a manual deployment if you are deploying a 2000 user system.
Ensure that any additional internal virtual machines (Media and Web, if applicable) are on the same subnet as the Admin virtual
machine.
Ensure that the Internet Reverse Proxy virtual machines are in your internal network.
Required IP Addresses
Description
Network Location
IP Address
Real IP address of the Admin virtual machine
Internal
Real IP address of the Media virtual machine (if applicable)
Internal (same subnet as Admin virtual machine)
Real IP address of the second Media virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the third Media virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the Web virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the second Web virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the Internet Reverse Proxy
Internal (may be on the same subnet as Admin virtual machine)
Administration URL (used exclusively by the system. Maps to the private VIP address)
Internal (same subnet as Admin virtual machine)
Webex site URL (used exclusively by the system. Maps to the public VIP address)
Internal (same subnet as the Internet Reverse Proxy)
Note
This IP address must be publicly routable.
Real IP address of the HA Admin virtual machine (if applicable)
Internal (same subnet as primary system's Admin virtual machine)
Real IP address of the HA Media virtual machine (if applicable)
Internal (same subnet as primary system's Admin virtual machine)
Real IP address of the HA Web virtual machine (if applicable)
Internal (same subnet as primary system's Admin virtual machine)
Real IP address of the HA Internet Reverse Proxy (if applicable)
Internal—same subnet as the primary system's Internet Reverse Proxy (but may use NAT with a private IP address)
DNS Configuration
Make the following changes to your DNS configuration.
Note
There are some limitations for the hostname portion of the Webex site URL and the Administration site URL. For a list of the
words that you may not use, see Webex Site and Webex Administration URLs.
Task
Example
Update your DNS Server with the hostnames and IP Addresses for the internal virtual machines: Admin virtual machine and if
applicable, the Media and Web virtual machines.
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
<web-vm-FQDN>
<web-vm-IP-address>
Update your DNS server with the hostname and IP address for the Internet Reverse Proxy virtual machine.
<IRP-vm-FQDN>
<IRP-vm-IP-address>
Update your DNS server with Administration site URL and Private VIP address information.
<Administration-site-URL>
<Private-VIP-address>
Update your DNS server with Webex site URL and Public VIP address information.
<Webex-site-URL>
<Public-VIP-address>
Firewall Configuration
For security reasons, we recommend that you place the Internet Reverse Proxy in a separate subnet from the internal (Admin,
Media and Web, if applicable) virtual machines.
Make the following changes to your network routing.
Task
Compare These IP Addresses
Enable L3 (Layer 3) routing between the internal and DMZ networks for the following virtual machines: Admin virtual machine
and if applicable, the Media and Web virtual machines
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
<web-vm-FQDN>
<web-vm-IP-address>
Ensure that the Public VIP address and the Internet Reverse Proxy virtual machines are on the same subnet.
Note
As you are deploying all your system virtual machines internally (the Internet Reverse Proxy is not in the DMZ), then this
subnet must be in the internal network.
<Public-VIP-address>
<IRP-vm-FQDN>
<IRP-vm-IP-address>
Ensure that the Private VIP address and internal virtual machines (Admin, and Media and Web, if applicable) are on the same
subnet.
<Private-VIP-address>
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
<web-vm-FQDN>
<web-vm-IP-address>
Networking Checklist for an Installation or Expansion, with Automatic Deployment, Public Access, and a Non-Split-Horizon DNS
Virtual Machine
Deployment
In
an automatic deployment, we deploy all the virtual machines (other than the
Admin virtual machine) for you. We recommend that you choose an automatic
deployment if you are deploying a 50, 250, or 800 user system.
Verify that the Media virtual machine (if applicable) is on the
same subnet as the Admin virtual machine.
Verify that the Internet Reverse Proxy virtual machines are in
your DMZ network.
Required IP
Addresses
Description
Network Location
IP Address
Real IP address of the Admin
virtual machine
Internal
Real IP address of the Media
virtual machine (if applicable)
Internal (same subnet as Admin virtual machine)
Real IP address of the Internet Reverse Proxy
DMZ (but can use NAT with a private IP address)
Administration URL (used exclusively by the system. Maps to the
private VIP address)
Internal (same subnet as Admin virtual machine)
Webex site URL (used exclusively by the system. Maps to the public VIP address)
DMZ (same subnet as the Internet Reverse Proxy)
Real IP address of the HA Admin virtual machine (if applicable)
Internal (same subnet as
primary system Admin virtual machine)
Real IP address of the HA Media virtual machine (if applicable)
Internal (same subnet as
primary system Admin virtual machine)
Real IP address of the HA Internet Reverse Proxy (if applicable)
DMZ [same subnet as the primary system Internet Reverse Proxy
(but can use NAT with a private IP address)]
DNS
Configuration
Update the DNS server as follows. There are some limitations for the hostname portion of the Webex site URL and the Administration
site URL. For a list of the words that you cannot use, see Webex Site and Webex Administration URLs.
Task
Example
Hostnames and IP addresses of the internal virtual machines:
Admin virtual machine and, if applicable, the Media virtual machine.
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
Hostname and IP address for
the Internet Reverse Proxy virtual machine.
Make the following
changes to your network routing.
Task
Compare These IP Addresses
Enable Layer 3 routing between the internal and DMZ networks.
Internal Subnet <internal-subnet>/24
DMZ
Subnet <DMZ-subnet>/24
Verify that the Public VIP
address and the Internet Reverse Proxy virtual machines are on the same subnet.
<Public-VIP-address>
<IRP-vm-FQDN>
<IRP-vm-IP-address>
Verify that the Private VIP
address and internal virtual machines are on the same subnet.
<Private-VIP-address>
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
Networking Checklist for an Installation or Expansion, with Manual Deployment, Public Access, and a Non-Split Horizon DNS
Virtual Machine Deployment
In a manual deployment, you create all the virtual machines for your system using the OVA wizard from your vSphere client.
You then install your system using a manual deployment.
You must choose a manual deployment if you are deploying a 2000 user system.
Ensure that any additional internal virtual machines (Media and Web, if applicable) are on the same subnet as the Admin virtual
machine.
Ensure that the Internet Reverse Proxy virtual machines are in your DMZ network.
Required IP Addresses
Description
Network Location
IP Address
Real IP address of the Admin virtual machine
Internal
Real IP address of the Media virtual machine (if applicable)
Internal (same subnet as Admin virtual machine)
Real IP address of the second Media virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the third Media virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the Web virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the second Web virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the Internet Reverse Proxy
DMZ (but may use NAT with a private IP address)
Administration URL (used exclusively by the system. Maps to the private VIP address)
Internal (same subnet as Admin virtual machine)
Webex site URL (used exclusively by the system. Maps to the public VIP address)
DMZ (same subnet as the Internet Reverse Proxy)
Real IP address of the HA Admin virtual machine (if applicable)
Internal (same subnet as primary system's Admin virtual machine)
Real IP address of the HA Media virtual machine (if applicable)
Internal (same subnet as primary system's Admin virtual machine)
Real IP address of the HA Web virtual machine (if applicable)
Internal (same subnet as primary system's Admin virtual machine)
Real IP address of the HA Internet Reverse Proxy (if applicable)
DMZ—same subnet as the primary system's Internet Reverse Proxy (but may use NAT with a private IP address)
DNS Configuration
Make the following changes to your DNS configuration.
Note
There are some limitations for the hostname portion of the Webex site URL and the Administration site URL. For a list of the
words that you may not use, see Webex Site and Webex Administration URLs.
Task
Example
Update your DNS Server with the hostnames and IP Addresses for the internal virtual machines: Admin virtual machine and if
applicable, the Media and Web virtual machines.
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
<web-vm-FQDN>
<web-vm-IP-address>
Update your DNS server with the hostname and IP address for the Internet Reverse Proxy virtual machine.
<IRP-vm-FQDN>
<IRP-vm-IP-address>
Update your DNS server with Administration site URL and Private VIP address information.
<Administration-site-URL>
<Private-VIP-address>
Update your DNS server with Webex site URL and Public VIP address information.
Make the following changes to your network routing.
Task
Compare These IP Addresses
Enable L3 (Layer 3) routing between the internal and DMZ networks for the following virtual machines: Admin virtual machine
and if applicable, the Media and Web virtual machines
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
<web-vm-FQDN>
<web-vm-IP-address>
Ensure that the Public VIP address and the Internet Reverse Proxy virtual machines are on the same subnet.
<Public-VIP-address>
<IRP-vm-FQDN>
<IRP-vm-IP-address>
Ensure that the Private VIP address and internal virtual machines (Admin, and Media and Web, if applicable) are on the same
subnet.
<Private-VIP-address>
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
<web-vm-FQDN>
<web-vm-IP-address>
Networking Checklist For an Installation or Expansion, with Automatic Deployment, Public Access, and a Split-Horizon DNS
Virtual Machine
Deployment
In
an automatic deployment, we deploy all the virtual machines (other than the
Admin virtual machine) for you. We recommend that you choose an automatic
deployment if you are deploying a 50, 250, or 800 user system.
Verify that the Media virtual machine (if applicable) is on the
same subnet as the Admin virtual machine.
Verify that the Internet Reverse Proxy virtual machines are in
your DMZ network.
Required IP
Addresses
Description
Network Location
IP Address
Real IP address of the Admin
virtual machine
Internal
Real IP address of the Media
virtual machine (if applicable)
Internal (same subnet as Admin virtual machine)
Real IP address of the Internet Reverse Proxy
DMZ (but can use NAT with a private IP address)
Administration URL (used exclusively by the system. Maps to the
private VIP address)
Internal (same subnet as Admin virtual machine)
Webex site URL (used exclusively by the system. Maps to two VIP addresses):
Internal users—Internal (same subnet as Admin virtual machine)
External users—DMZ (same subnet as the Internet Reverse Proxy)
Real IP address of the HA Admin virtual machine (if applicable)
Internal (same subnet as
primary system Admin virtual machine)
Real IP address of the HA Media virtual machine (if applicable)
Internal (same subnet as
primary system Admin virtual machine)
Real IP address of the HA Internet Reverse Proxy (if applicable)
DMZ [same subnet as the primary system Internet Reverse Proxy
(but can use NAT with a private IP address)]
DNS
Configuration
Update the DNS server as follows. There are some limitations for the hostname portion of the Webex site URL and the Administration
site URL. For a list of the words that you cannot use, see Webex Site and Webex Administration URLs.
Task
Example
Hostnames and IP addresses of the internal virtual machines:
Admin virtual machine and, if applicable, the Media virtual machine.
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
Hostname and IP address for the DMZ
virtual machine.
<IRP-vm-FQDN>
<IRP-vm-IP-address>
Webex site URL, Administration site URL, and Private VIP address information.
Make the following
changes to your network routing.
Task
Compare These IP Addresses
Enable Layer 3 routing between the internal and DMZ networks.
Internal Subnet <internal-subnet>/24
DMZ
Subnet <DMZ-subnet>/24
Verify that the Public VIP
address and the Internet Reverse Proxy virtual machines are on the same subnet.
<Public-VIP-address>
<IRP-vm-FQDN>
<IRP-vm-IP-address>
Verify that the Private VIP
address and internal virtual machines are on the same subnet.
<Private-VIP-address>
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
Networking Checklist for an Installation or Expansion, with Manual Deployment, Public Access, and a Split-Horizon DNS
Virtual Machine Deployment
In a manual deployment, you create all the virtual machines for your system using the OVA wizard from your vSphere client.
You then install your system using a manual deployment.
You must choose a manual deployment if you are deploying a 2000 user system.
Ensure that any additional internal virtual machines (Media and Web, if applicable) are on the same subnet as the Admin virtual
machine.
Ensure that the Internet Reverse Proxy virtual machines are in your DMZ network.
Required IP Addresses
Description
Network Location
IP Address
Real IP address of the Admin virtual machine
Internal
Real IP address of the Media virtual machine (if applicable)
Internal (same subnet as Admin virtual machine)
Real IP address of the second Media virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the third Media virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the Web virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the second Web virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the Internet Reverse Proxy
DMZ (but may use NAT with a private IP address)
Administration URL (used exclusively by the system. Maps to the private VIP address)
Internal (same subnet as Admin virtual machine)
Webex site URL (used exclusively by the system. Maps to two VIP addresses)
internal users—private VIP address
external users—public VIP address
Internal users—Internal (same subnet as Admin virtual machine)
External users—DMZ (same subnet as the Internet Reverse Proxy)
Real IP address of the HA Admin virtual machine (if applicable)
Internal (same subnet as primary system's Admin virtual machine)
Real IP address of the HA Media virtual machine (if applicable)
Internal (same subnet as primary system's Admin virtual machine)
Real IP address of the HA Web virtual machine (if applicable)
Internal (same subnet as primary system's Admin virtual machine)
Real IP address of the HA Internet Reverse Proxy (if applicable)
DMZ—same subnet as the primary system's Internet Reverse Proxy (but may use NAT with a private IP address)
DNS Configuration
Make the following changes to your DNS configuration.
Note
There are some limitations for the hostname portion of the Webex site URL and the Administration site URL. For a list of the
words that you may not use, see Webex Site and Webex Administration URLs.
Task
Example
Update your DNS Server (that enables internal lookup) with the hostnames and IP Addresses for the internal virtual machines:
Admin virtual machine and if applicable, the Media and Web virtual machines.
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
<web-vm-FQDN>
<web-vm-IP-address>
Update your DNS server (that enables internal lookup) with the hostname and IP address for the DMZ virtual machine.
<IRP-vm-FQDN>
<IRP-vm-IP-address>
Update your DNS server (that enables internal lookup) with Webex site URL, Administration site URL, and Private VIP address
information.
<Administration-site-URL>
<Private-VIP-address>
<Webex-site-URL>
<Private-VIP-address>
Update your DNS server (that enables external lookup) with Webex site URL and Public VIP address information.
Make the following changes to your network routing.
Task
Compare These IP Addresses
Enable L3 (Layer 3) routing between the internal and DMZ networks for the following virtual machines: Admin virtual machine
and if applicable, the Media and Web virtual machines
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
<web-vm-FQDN>
<web-vm-IP-address>
Ensure that the Public VIP address and the Internet Reverse Proxy virtual machines are on the same subnet.
<Public-VIP-address>
<IRP-vm-FQDN>
<IRP-vm-IP-address>
Ensure that the Private VIP address and internal virtual machines (Admin virtual machine and if applicable, the Media and
Web virtual machines) are on the same subnet.
<Private-VIP-address>
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
<web-vm-FQDN>
<web-vm-IP-address>
Networking Checklist
for an Installation or Expansion with Automatic Deployment and No Public
Access
Virtual Machine
Deployment
In
an automatic deployment, we deploy all the virtual machines (other than the
Admin virtual machine) for you. We recommend that you choose an automatic
deployment if you are deploying a 50, 250, or 800 user system.
Verify that the Media virtual machine (if applicable) is on the
same subnet as the Admin virtual machine.
Required IP
Addresses
Description
Network Location
IP Address
Real IP address of the Admin
virtual machine
Internal
Real IP address of the Media
virtual machine (if applicable)
Internal (same subnet as Admin virtual machine)
Administration URL (used exclusively by the system. Maps to the
private VIP address)
Internal (same subnet as Admin virtual machine)
Real IP address of the HA Admin virtual machine (if applicable)
Internal (same subnet as
primary system Admin virtual machine)
Real IP address of the HA Media virtual machine (if applicable)
Internal (same subnet as
primary system Admin virtual machine)
Real IP address of the HA Internet Reverse Proxy (if applicable)
Internal (same subnet as
primary system Admin virtual machine)
DNS
Configuration
Update the DNS server as follows. There are some limitations for the hostname portion of the Webex site URL and the Administration
site URL. For a list of the words that you cannot use, see Webex Site and Webex Administration URLs.
Task
Example
Hostnames and IP addresses of the internal virtual machines:
Admin virtual machine and, if applicable, the Media virtual machine.
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
Webex site URL, Administration site URL, and Private VIP address information.
<Administration-site-URL>
<Private-VIP-address>
<Webex-site-URL>
<Private-VIP-address>
Firewall
Configuration
Task
Example
Configure all the firewalls
inside your internal network to permit web browsers to access the Private VIP
address.
HTTP
<Private-VIP-address>:80
HTTPS
<Private-VIP-address>:443
Network Routing
Configuration
Task
Compare These IP Addresses
Verify that the Private VIP
address and internal virtual machines are on the same subnet.
<Private-VIP-address>
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
Networking Checklist For an Installation or Expansion, with Manual Deployment and No Public Access
Virtual Machine Deployment
In a manual deployment, you create all the virtual machines for your system using the OVA wizard from your vSphere client.
You then install your system using a manual deployment.
You must choose a manual deployment if you are deploying a 2000 user system.
Ensure that any additional internal virtual machines (Media and Web, if applicable) are on the same subnet as the Admin virtual
machine.
Required IP Addresses
Description
Network Location
IP Address
Real IP address of the Admin virtual machine
Internal
Real IP address of the Media virtual machine (if applicable)
Internal (same subnet as Admin virtual machine)
Real IP address of the second Media virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the third Media virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the Web virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Real IP address of the second Web virtual machine (2000 user system only)
Internal (same subnet as Admin virtual machine)
Administration URL (used exclusively by the system. Maps to the private VIP address)
Internal (same subnet as Admin virtual machine)
Webex site URL (used exclusively by the system. Maps to the private VIP address)
Internal (same subnet as Admin virtual machine)
Real IP address of the HA Admin virtual machine (if applicable)
Internal (same subnet as primary system's Admin virtual machine)
Real IP address of the HA Media virtual machine (if applicable)
Internal (same subnet as primary system's Admin virtual machine)
Real IP address of the HA Web virtual machine (if applicable)
Internal (same subnet as primary system's Admin virtual machine)
DNS Configuration
Make the following changes to your DNS configuration.
Note
There are some limitations for the hostname portion of the Webex site URL and the Administration site URL. For a list of the
words that you may not use, see Webex Site and Webex Administration URLs.
Task
Example
Update your DNS Server (that enables internal lookup) with the hostnames and IP Addresses for the internal virtual machines:
Admin virtual machine and if applicable, the Media and Web virtual machines.
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
<web-vm-FQDN>
<web-vm-IP-address>
Update your DNS server with Administration site URL, Webex site URL, and Private VIP address information.
<Administration-site-URL>
<Private-VIP-address>
<Webex-site-URL>
<Private-VIP-address>
Firewall Configuration
Make the following changes to your firewalls.
Task
Example
Configure all the firewalls inside your internal network to permit web browsers to access the Private VIP address.
HTTP <Private-VIP-address>:80
HTTPS <Private-VIP-address>:443
Network Routing Configuration
Make the following changes to your network routing.
Task
Compare These IP Addresses
Ensure that the Private VIP address and internal virtual machines (Admin, and Media and Web, if applicable) are on the same
subnet.
<Private-VIP-address>
<admin-vm-FQDN>
<admin-vm-IP-address>
<media-vm-FQDN>
<media-vm-IP-address>
<web-vm-FQDN>
<web-vm-IP-address>
Webex Site and Webex Administration URLs
Webex Site URL
Users access the Webex site URL to schedule, host, or attend meetings. This URL resolves to either the private VIP address
or the public VIP address, depending on whether or not you are using a split-horizon DNS.
Resolves to the
public VIP address for all users, when you do not have split-horizon DNS.
Resolves to the
public VIP address for external users when you have split-horizon DNS.
Resolves to the
private VIP address for internal users when you have split-horizon DNS.
Note
Ports 80 and 443 must be open for the Webex site URL.
Webex Administration URL
Administrators access the Webex Administration URL to configure, manage, and monitor the system. This URL resolves to the
private VIP address.
Note
Ports 80 and 443 must be open for the Webex Administration URL.
Names for the Webex Site and Webex Administration URLs
You may choose
almost any names for these URLs, comprising all lowercase characters. However,
you cannot use the following as the hostname in the URLs:
the same name as the hostnames for any of the virtual machines in the system
authentication
client
companylogo
dispatcher
docs
elm-admin
elm-client-services
emails
maintenance
manager
orion
oriondata
oriontemp
nbr
npp
probe
reminder
ROOT
solr
TomcatROOT
upgradeserver
url0107ld
version
WBXService
webex
Port Access When All
the Virtual Machines Are in the Internal Network
This section describes the
port access required in the external firewall when all the system virtual
machines (Admin, and if applicable, Media, Web, and Internet Reverse Proxy) are
in the internal network. This is the Internal Internet Reverse Proxy network
topology.
Ensure that the firewall or any load balancing solution redirects requests to the ports listed below to ensure end users can
host and join meetings successfully.
TCP Port 80 to the public virtual IP (VIP) address
TCP Port 443 to the public virtual IP (VIP) address
Note
The Web node and Admin node send SMTP requests to the configured
Email server. If there is a firewall between the internal Web and Admin virtual
machines and the Email server, SMTP traffic might be blocked. To ensure Email
server configuration and Email notification work properly, port 25 or 465
(secure SMTP port number) must be open between the Email server and the Web and
the Admin virtual machines.
Port Access With an
Internet Reverse Proxy in the DMZ Network
This section describes the
port access required in the internal and external firewalls when you have
internal virtual machines (Admin, and if applicable, Media and Web) in the
internal network, and the Internet Reverse Proxy (IRP) in the DMZ network.
Configure access control lists (ACLs) on the switch that permits traffic to the ESXi hosts for the system virtual machines.
Port Access in
the External Firewall
Enabled public access by opening port 80 (HTTP) in addition to port 443 (HTTPS), so users can enter the Webex site URL without
having to remember whether it is HTTP or HTTPS. Although port 80 is open, all the network traffic flows over port 443 (SSL
encrypted HTTPS).
Important
Ensure that the firewall or
any load balancing solution redirects requests to the ports listed below to
ensure users can host and join meetings successfully.
Restriction
Configure TCP
port 64700 on the IRP machine to deny any requests that come to the public VIP
address. In the external firewall, this limits access to this port for
requests only from the Admin virtual machines.
Protocol
Port
Source
Destination
Why It
Is Needed
TCP
443
Any
external clients.
Public
VIP (Eth1) of the IRP.
External clients access the Webex site URL by using HTTPS. TCP connections are initiated from the external client machines
to the IRP virtual machines.
TCP
80
Any
external clients.
Public
VIP (Eth1) of the IRP.
External clients accessing the Webex site URL by using HTTP. TCP connections are initiated from the external client machines
to the IRP virtual machines.
TCP
8444
(Introduced in 2.5MR1, 2.6, and 2.0MR6HF.)
Any
external clients.
Public
VIP (Eth1) of the IRP.
External clients accessing the Webex recordings by using HTTPS. TCP connections are initiated from the external client machines
to the IRP virtual machines.
UDP
53
Real IP
(Eth0) of the IRP.
DNS
server.
This is
needed if you have a firewall between the virtual machines and the DNS server,
for your system to deploy and operate successfully.
Port Access in
the Internal Firewall
If you have
restrictions on connections from the internal network to the DMZ network, then
the table in this section applies. Allow TCP connections
outbound
from the internal network to the DMZ network segment.
Note
No TCP
connections need to be allowed from the DMZ segment in to the internal network
for this product to work properly.
Note
Using iptables
or access control lists (ACLs), configure the firewall so that connections to
port 64616 only come from the Admin virtual machine.
Note
The Web node and Admin node send SMTP requests to the configured
Email server. If there is a firewall between the internal Web and Admin virtual
machines and the Email server, SMTP traffic might be blocked. To ensure Email
server configuration and Email notification work properly, port 25 or 465
(secure SMTP port number) must be open between the Email server and the Web and
the Admin virtual machines.
Note
Especially when
the IRP is in the DMZ network, allow Internet Control Message Protocol (ICMP)
echo requests and replies. Otherwise, the IRP detect and the DNS server
availability validation might fail if the ICMP echo reply is not received.
Protocol
Port
Source
Destination
Why It
Is Needed
TCP
64001
All
internal virtual machines (Eth0 IP).
Real IP
(Eth0) of the IRP virtual machines.
Establishes reverse connections to the IRP. TCP connections are
established from the internal virtual machines to the IRP virtual machines.
TCP
64002
Admin
and web virtual machines (Eth0 IP).
Real IP
(Eth0) of the IRP virtual machines.
Establishes reverse connections to the IRP. TCP connections are
established from the internal virtual machines to the IRP virtual machines.
TCP
7001
All
internal virtual machines (Eth0 IP).
Real IP
(Eth0) of the IRP virtual machines.
Establishes reverse connections to the IRP. TCP connections are
initiated from the internal virtual machines to the IRP virtual machines.
TCP
64616
Admin
virtual machines (Eth0 IP).
Real IP
(Eth0) of the IRP virtual machines.
Bootstrap the IRP. TCP connections are initiated from the Admin
virtual machines to the IRP virtual machines.
Note
Using
iptables or access control lists (ACLs), configure the firewall so that
connections to port 64616 only come from the Admin virtual machine.
TCP
22
Any
internal client machines.
Real IP
(Eth0) of the IRP virtual machines.
Troubleshooting the IRP virtual machines using a Remote Support
Account.
TCP
443
Any
internal client machines.
Private
VIP (Eth1) of the Admin virtual machines.
Real IP
(Eth0) of the Media virtual machines.
Internal users accessing the Webex site URL by using HTTPS. TCP connections are established from the internal client machine
to the Admin virtual machine.
TCP
443
Private VIP (Eth1) of the Admin virtual machines and Real IP (Eth0) of the Media virtual machines.
Public VIP (Eth1) of the IRP.
TCP
65002
Any
internal client machines.
Any
internal virtual machines.
Controls
network traffic between internal virtual machines.
TCP
65102
Any
internal client machines.
Any
internal virtual machines.
Controls
network traffic between internal virtual machines.
TCP
80
Any
internal client machines.
Private
VIP (Eth1) of the Admin virtual machines.
Internal users accessing the Webex site URL using HTTP. TCP connections are established from the internal client machine to
the Admin virtual machine.
UDP
53
All
internal virtual machines (Eth0 IP).
DNS
server.
If you
have a firewall between the virtual machines and the DNS server, for your
system to deploy and operate successfully.
TCP
8443
Cisco Webex Meetings Server Web Node.
CUCM
For AXL traffic in a multi-data center system between Cisco Webex Meetings Server and CUCM to allow LDAP CUCM failover.
VMware vCenter
Ports
Ports Open for Deployment
These are some of the ports that are used during the deployment of a Single-data Center (SDC) Cisco Webex Meetings Server
(CWMS). Once the deployment completes, you can close any ports that were opened solely for the deployment.
TCP Port 443 should be open,
in both directions, between vCenter and the Admin virtual machine for secure
https management during an automatic system deployment. The Admin virtual
machine uses this port to provide vCenter credentials to deploy the virtual
machines automatically in vCenter.
The ports listed
below are used for communication between the ESXi host and vCenter. If the ESXi
host and vCenter are connected to a
separate
management network, you may not need to open these ports through the
firewall. For a complete list of ports used by vCenter and the ESXi host, see
your VMware documentation.
UDP/TCP Port 902
in both directions between vCenter and the ESXi hosts for vCenter management
(Optional) TCP
Port 22 from the vSphere client to the ESXi hosts for SSH management
UDP Port 514
from the ESXi hosts for your system to the internal syslog
TCP Port 5989 in
both directions between vCenter and the ESXi hosts for XML management
The
default UDP port used for external clients for audio and video data
transmission is SSL (port 443).
Ports Open to Support Multi-data Center
Ports to open between the CWMS internal virtual machines
Ports to open between the CWMS internal virtual machines and Virtual IPs
tcp 443
tcp 80
Ports to open between Internet Reverse Proxy IPs and the CWMS internal virtual machines
tcp 7001
tcp 64001
tcp 64700
tcp 64616
UDP ports to open between the CWMS internal virtual machines 1
udp range:10000:19999
udp range:16000:32000
udp range:9000:9011 (Medium system)
udp range:9000:9009 (Large system)
udp 5060
udp 5062
1 Media components for PC audio and video use these ports.
Cisco Webex Meeting Center Ports
The
UDP ports used for internal clients for audio and video data transmission
between UDP and SSL include:
For 50 user
systems, use UDP port 9000
For 250 user
systems, use UDP ports 9000, 9001, 9002, 9003
For 800 user systems, use UDP ports 9000, 9001, 9002, 9003, 9004, 9005, 9006, 9007, 9008, 9009, 9010, 9011
For 2000 user systems, use UDP ports 9000, 9001, 9002, 9003, 9004, 9005, 9006, 9007, 9008, 9009
With the
appropriate network settings, internal media servers allow connections through
any port used by Meeting Center.
The Internet Reverse Proxy only accepts connections from Webex Meetings through TCP ports 80 and 443.
Using NAT With Your
System
Network Address Translation (NAT) traversal is supported for virtual machine IP addresses and for the virtual IP addresses
(Public and Private VIPs) that are used in your system.
The following
schematic diagram illustrates a typical NAT traversal for a 50 user system
without High Availability (HA). By using NAT, you can reduce the number of
public IP
addresses required for the product to just one IP address, instead of two
(or three if you deploy HA). You can also deploy similar NAT deployments as
long as these meet the overall system requirements.
Important
The use of multiple NATs and firewalls tends to increase latency,
affecting the quality of real time-traffic for users.
Also, when using
multiple NAT domains, routing between these various NAT domains can be
challenging. You can use NAT-ed IP addresses as long as the following
requirements are met:
All the
virtual machines in the system can use NAT-ed IP addresses, with the exception
of the Internet Reverse Proxy virtual machine. NAT between the Administration
virtual machine and the Internet Reverse Proxy virtual machine is not
supported. The IP address of the Internet Reverse Proxy virtual machine (its
real IP address) must be reachable by the Administration virtual machine
through the internal network.
The public VIP
address itself does not need to be publicly visible, but it must be
translatable from the Internet.
When deploying public access, the Webex site URL must be mapped to an Internet-visible IP address. This Internet-visible IP
address must be accessible by external users and also map to the public VIP address you configure during the system deployment.
You can choose
to make the public VIP address visible from the Internet. If you choose not to
make it publicly visible, then it must be translatable from the Internet.
In the diagram, an external user accesses the Webex site to join or host a meeting. Following a DNS lookup, the IP address
for the Webex site is the NAT public IP address (Eth0). This NAT public IP address is for the external NAT firewall router
(Firewall and NAT router 1), between the external network and the DMZ network.
The firewall router receives this request from the external user, and internally routes the request to the NAT private IP
address for the router (Eth1, exposed to the DMZ network). Eth1 then sends the request to the public VIP address (also a NAT
IP address in the private networking segment for the Webex site).
You can use NAT IP
addresses for the public VIP address, and the Internet Reverse Proxy IP
addresses. The only NAT public IP address is the Eth0 IP address for the NAT
firewall router.
Note
To ensure this NAT
firewall router (between the Internet and DMZ network) routes the incoming
packet correctly, set port mapping configuration on the NAT device, or apply
other similar mechanisms to ensure the packet is routed correctly to the public
VIP address and the Internet Reverse Proxy.
There is usually a
second internal NAT firewall router between the DMZ network and the internal
network. Similar to the external NAT firewall router, Eth0 is a DMZ NAT private
IP address and is an interface to the DMZ network. Eth1 is also a NAT private
IP address that is an interface to the internal network.
You can use NAT IP
addresses for the private VIP address and the Administration virtual machine IP
addresses.
If your network topology includes forward proxies, they must meet specific requirements for the Internet Reverse Proxy to work properly. See "Use of Forward Proxies in Your System" in the Cisco Webex Meetings Server Troubleshooting Guide for complete details.
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