Configure Firewall for Secure Web Appliance

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Updated:October 21, 2026
Document ID:218441

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Introduction

This document describes the ports that must be open for the operation of Cisco Secure Web Appliance (SWA)

Prerequisites

General knowledge of Transmission Control Protocol/Internet Protocol (TCP/IP) is recommended.

Understand Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) differences and behaviours.

Firewall Rules

The table lists possible ports that must be open for the proper operation of Cisco SWA.

Note: Port numbers are all default values, if any of them have been changed, use the updated port value.

Default port

Protocol

Inbound/Outbound

Fully Qualified Domain Name (FQDN)

Purpose

20

21

TCP

InBound or OutBound 

AsyncOS Management IP. (inbound)

FTP server (outbound)

File Transfer Protocol (FTP) for aggregation of log files.
Data ports TCP 1024 and higher
must also be open

22

TCP

InBound 

AsyncOS Management IP

Secure Shell Protocol (SSH) access to the Secure Shell Protocol (SSH),
Aggregation of log files

22

TCP

OutBound

SSH Server

SSH aggregation of log files.

Secure copy protocol (SCP) push to log server.

25

TCP

OutBound

Simple Mail Transfer Protocol (SMTP) server IP

Send alerts via Email

53

UDP

OutBound

Domain Name System (DNS) servers

DNS if configured to use Internet
root servers or other DNS servers
outside the firewall.

Also for SenderBase queries.

8080

TCP

InBound

AsyncOS Management IP address 

Hypertext Transfer Protocol (HTTP) access to the Graphical User Interface (GUI) 

8443

TCP

InBound

AsyncOS Management IP address 

Hypertext Transfer Protocol Secure (HTTPS) access to GUI 

80

443

TCP

OutBound

downloads.ironport.com

 McAfee definitions

80

443

TCP

OutBound

updates.ironport.com

AsyncOS upgrades and McAfee definitions

88

TCP & UDP 

OutBound

Kerberos Key Distribution Center (KDC) / Active Directory Domain Server 

Kerberos Authentication 

88

UDP

InBound

Kerberos Key Distribution Center (KDC) / Active Directory Domain Server 

Kerberos Authentication 

445

TCP

OutBound

Microsoft SMB

Active Directory authentication realm (NTLMSSP and Basic)

389

TCP & UDP

OutBound

Lightweight Directory Access Protocol (LDAP) Server

LDAP Authentication

3268

TCP

OutBound

LDAP Global Catalog (GC) 

LDAP GC

636 

TCP

OutBound

LDAP over Secure Sockets Layer (SSL)

LDAP SSL 

3269

TCP

OutBound

LDAP GC over SSL

LDAP GC SSL

135

TCP

InBound & OutBound

End-point resolution - Port Mapper

Net Log-on fixed port 

End-point Resolution

161

162

UDP

OutBound

Simple Network Management Protocol (SNMP) Server

SNMP Queries

161

UDP

InBound

AsyncOS Management IP

SNMP Traps

123

UDP

OutBound

Network Time Protocol (NTP) server

NTP time synchronization

443

TCP

OutBound

update-manifests.ironport.com

Obtain the list of the latest files
from the update server

(for physical hardware)

443

TCP

OutBound

update-manifests.sco.cisco.com

Obtain the list of the latest files
from the update server

(for virtual hardware)

443

TCP

OutBound

regsvc.sco.cisco.com
est.sco.cisco.com
updates-talos.sco.cisco.com
updates.ironport.com
serviceconfig.talos.cisco.com
grpc.talos.cisco.com

IPv4
146.112.62.0/24
146.112.63.0/24
146.112.255.0/24
146.112.59.0/24

IPv6
2a04:e4c7:ffff::/48
2a04:e4c7:fffe::/48

Cisco Talos Intelligence Services 

Obtain Uniform Resource Locator (URL) category and reputation data.

443

TCP

OutBound

cloud-sa.amp.cisco.com
cloud-sa.amp.sourcefire.com
cloud-sa.eu.amp.cisco.com
api.amp.cisco.com 
api.amp.sourcefire.com 

Advance Malware Protection (AMP) Public Cloud 

443

TCP

OutBound

AMERICAS
api-sse.cisco.com
mx01.sse.itd.cisco.com
dex.sse.itd.cisco.com

EUROPE
api.eu.sse.itd.cisco.com
mx01.eu.sse.itd.cisco.com
dex.eu.sse.itd.cisco.com

ASIA/PACIFIC
api.apj.sse.itd.cisco.com
mx01.apj.sse.itd.cisco.com
dex.apj.sse.itd.cisco.com

Cisco Cloud Services on Secure Web Appliance.

The required URLs are different per Secure Cloud Servers region.

443

TCP

OutBound

panacea.threatgrid.com

panacea.threatgrid.eu

For Secure Malware Analytics Portal and Integrated Devices 

80

3128

TCP

InBound

Proxy Clients

Default client connectivity to the HTTP/HTTPS proxy

80

443

TCP

OutBound

Default Gateway

HTTP and HTTPS Proxy Traffic Out

514

UDP

OutBound

Syslog Server

Syslog server to collect logs

990

TCP

OutBound

cxd.cisco.com

To upload the debug logs that are
collected by Cisco Technical Assistance Collaborative (TAC).

File Transfer Protocol of SSL (FTPS) Implicit.

21

TCP

OutBound

cxd.cisco.com

To upload the debug logs that are
collected by Cisco TAC.

FTPS Explicit or FTP

443

TCP

OutBound

cxd.cisco.com

To upload the debug logs that are
collected by Cisco TAC over HTTPS

22

TCP

OutBound

cxd.cisco.com

To upload the debug logs that are
collected by Cisco TAC over SCP and Secure File Transfer Protocol (SFTP)

22
25 (Default)
53
80
443
4766

TCP

OutBound

s.tunnels.ironport.com

Remote access to the back-end service

443

TCP

OutBound

smartreceiver.cisco.com

Smart Licensing 


Related Content

Revision History

Revision Publish Date Comments
5.0
21-Oct-2026
Updated formatting and fixed links
4.0
27-Apr-2026
Updated AMP and Cloud Services sections within the host table.
3.0
31-Oct-2023
Recertification
2.0
20-Apr-2023
Initial Release
1.0
30-Nov-2022
Initial Release
TAC Authored

Contributed by Cisco Engineers

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