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Appendix: FlexVPN RADIUS Attributes
This chapter describes the RADIUS attributes supported by FlexVPN server.
FlexVPN RADIUS Attributes
The following are the RADIUS attributes categories used by FlexVPN Server:
 Note | For inbound attributes sent by the FlexVPN server to RADIUS that are not listed below, the value is set by the AAA system. |
|
Attribute |
User-Password |
|
Type |
IETF |
|
Format |
String |
|
Attribute ID |
2 |
|
Description |
This attribute is sent by the FlexVPN server to RADIUS and is derived as follows: |
|
Attribute |
Calling-Station-ID |
|
Type |
IETF |
|
Format |
String |
|
Attribute ID |
31 |
|
Description |
This attribute is sent by FlexVPN server to RADIUS and is derived as follows: |
|
Attribute |
Service-Type |
|
Type |
IETF |
|
Format |
String |
|
Attribute ID |
6 |
|
Description |
This attribute is used by FlexVPN server for EAP authentication and the value of this attribute is set to 'Login'. |
|
Attribute |
EAP-Message |
|
Type |
IETF |
|
Format |
String |
|
Attribute ID |
79 |
|
Description |
This attribute is used by FlexVPN server for EAP authentication to relay EAP packets between EAP server and the Remote Access Client. |
|
Attribute |
Message-Authenticator |
|
Type |
IETF |
|
Format |
String |
|
Attribute ID |
80 |
|
Description |
This attribute is sent by FlexVPN server for EAP authentication. The value for this attribute is set by AAA subsystem. |
|
Attribute |
Framed-Pool |
|
Type |
IETF |
|
Format |
String |
|
Attribute ID |
88 |
|
Local config |
pool name |
|
Radius config |
Framed-Pool=pool-name |
|
Description |
Specifies the name of IPv4 address pool that is used by FlexVPN server to allocate the IPv4 address to assign to the client. The allocated address is pushed to client via IKEv2 standard config attribute INTERNAL_IP4_ADDRESS. |
|
Attribute |
ipsec:group-dhcp-server |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Local config |
dhcp server {ipddr | host} |
|
Radius config |
cisco-avpair="ipsec: group-dhcp-server=ipaddr" |
|
Description |
Specifies the IPv4 DHCP server that is used by FlexVPN server to lease IPv4 address to assign to the client. The leased address is pushed to client via IKEv2 standard config attribute INTERNAL_IP4_ADDRESS. |
|
Attribute |
ipsec:dhcp-giaddr |
|
Type |
Cisco AV Pair |
|
Format |
IPaddr |
|
Local config |
dhcp giaddr ipaddr |
|
Radius config |
cisco-avpair="psec: dhcp-giaddr=ipaddr" |
|
Description |
Specifies the IPv4 DHCP gateway IP address that is used by FlexVPN server to contact the DCHP server. |
|
Attribute |
ipsec:dhcp-timeout |
|
Type |
Cisco AV Pair |
|
Format |
Integer |
|
Local config |
dhcp timeout seconds |
|
Radius config |
cisco-avpair="ipsec:dhcp-timeout=seconds" |
|
Description |
Specifies the time to wait for response from IPv4 DHCP server that is used by FlexVPN server to timeout response from the DHCP server. |
|
Attribute |
ipsec:ipv6-addr-pool |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Local config |
ipv6 pool name |
|
Radius config |
cisco-avpair="ipsec:ipv6-addr-pool=pool-name" |
|
Description |
Specifies the name of IPv6 address pool used by FlexVPN server to allocate the IPv6 address to assign to the client. The allocated address is pushed to the client via IKEv2 standard config attribute INTERNAL_IP6_ADDRESS. |
|
Attribute |
ipsec:route-set=interface |
||
|
Type |
Cisco AV Pair |
||
|
Format |
String |
||
|
Local config |
route set interface |
||
|
Radius config |
cisco-avpair="ipsec:route-set=interface" |
||
|
Description |
This attribute is used locally and enables sending of VPN interface IP address to the peer via IKEv2 standard config attribute INTERNAL_IP4_SUBNET. This allows running routing protocols such as BGP over VPN.
|
|
Attribute |
ipsec:route-accept |
||
|
Type |
Cisco AV Pair |
||
|
Format |
String |
||
|
Local config |
route accept any [tag tag-id] [distance distance] |
||
|
Radius config |
cisco-avpair="ipsec:route-accept=any [tag:tag] [distance:distance]" |
||
|
Example |
ipsec:route-accept=any tag=100 |
||
|
Description |
This attribute is used locally and specifies the filter for the subnets received from the peer via IKEv2 standard config attribute INTERNAL_IP4_SUBNET. The attribute also specifies the tag and distance for the routes added by IKEv2 for the filtered subnets.
|
|
Attribute |
ipsec:ipsec-flow-limit |
|
Type |
Cisco AV Pair |
|
Format |
Integer |
|
Local config |
ipsec flow-limit limit |
|
Radius config |
cisco-avpair="ipsec:ipsec-flow-limit=limit" |
|
Description |
This attribute is used by FlexVPN server and specifies the maximum number of IPsec SAs that an IPSec dVTI session can have. There is no limit by default. This parameter is similar to the crypto ipsec profile and set security-policy limit commands. |
|
Attribute |
ip:interface-config |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Local config |
aaa attribute list list attribute type interface-config string |
|
Radius config |
cisco-avpair="ip:interface-config=interface cmd string" |
|
Example |
ip:interface-config=ip vrf forwarding red |
|
Description |
This attribute is used locally and specifies an interface configuration mode command string that is applied on the virtual access interface for the session. For local configuration, the IKEv2 authorization policy points to an AAA attribute list that must have interface-config attribute. |
|
Attribute |
Tunnel-Type |
|
Type |
IETF |
|
Format |
Integer |
|
Attribute ID |
64 |
|
Radius config |
Tunnel-Type=type |
|
Description |
This attribute specifies the tunnel type (ESP, AH, GRE, etc.) and is received when FlexVPN server fetches preshared key for the session from RADIUS server. |
|
Attribute |
Tunnel-Medium-Type |
|
Type |
IETF |
|
Format |
Integer |
|
Attribute ID |
65, |
|
Radius config |
Tunnel-Medium-Type=type |
|
Description |
This attribute specifies the tunnel transport type (IPv4, IPv6, etc.) and is received when FlexVPN server fetches preshared key for the session from the RADIUS server. |
|
Attribute |
Tunnel-Password |
|
Type |
IETF |
|
Format |
String |
|
Attribute ID |
69 |
|
Radius config |
Tunnel-Password=string |
|
Description |
This attribute specifies the symmetric preshared key and is received when FlexVPN server fetches preshared key for the session from RADIUS server. |
|
Attribute |
ipsec:ikev2-password-local |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Radius config |
cisco-avpair="ipsec:ikev2-password-local=string" |
|
Description |
This attribute specifies the local preshared key and is received when FlexVPN server fetches preshared key for the session from RADIUS server. |
|
Attribute |
ipsec:ikev2-password-remote |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Radius config |
cisco-avpair="ipsec:ikev2-password-remote=string" |
|
Description |
This attribute specifies the remote preshared key and is received when FlexVPN server fetches preshared key for the session from RADIUS server. |
|
Attribute |
Framed-IP-Address |
|
Type |
IETF |
|
Format |
IPaddr |
|
Attribute ID |
8 |
|
Radius config |
Framed-IP-Address=ipaddr |
|
Description |
Specifies IPv4 address assigned to the client. This is pushed to the client via IKEv2 standard configuration attribute INTERNAL_IP4_ADDRESS. |
|
Attribute |
Framed-IP-Netmask |
|
Type |
IETF |
|
Format |
IPaddr |
|
Attribute ID |
9 |
|
Local config |
netmask mask |
|
Radius config |
Framed-IP-Netmask=mask |
|
Description |
Specifies the subnet mask of the IPv4 address assigned to the client. This is pushed to client via IKEv2 standard configuration attribute INTERNAL_IP4_NETMASK. |
|
Attribute |
ipsec:dns-servers |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Local config |
dns primary [secondary] |
|
Radius config |
cisco-avpair="ipsec:dns-servers=primary secondary" |
|
Description |
Specifies the primary and secondary IPv4 DNS servers for the client. This is pushed to the client via IKEv2 standard config attribute INTERNAL_IP4_DNS. |
|
Attribute |
ipsec:wins-servers |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Local config |
wins primary [secondary] |
|
Radius config |
cisco-avpair="ipsec:wins-servers=primary secondary" |
|
Description |
Specifies the primary and secondary IPv4 WINS servers for the client. This is pushed to the client via IKEv2 standard configuration attribute INTERNAL_IP4_NBNS. |
|
Attribute |
ipsec:route-set=access-list |
||
|
Type |
Cisco AV Pair |
||
|
Format |
String |
||
|
Local config |
route set access-list {acl-name | acl-number} |
||
|
Radius config |
cisco-avpair="ipsec:route-set=access-list {acl-name | acl-number}" |
||
|
Description |
Specifies the IPv4 subnets protected by FlexVPN server. This is pushed to the client via IKEv2 standard configuration attribute INTERNAL_IP4_SUBNET.
|
|
Attribute |
ipsec:addrv6 |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Radius config |
cisco-avpair="ipsec:addrv6=ipv6-addr" |
|
Description |
Specifies the IPv6 address assigned to the client. This is pushed to client via IKEv2 standard configuration attribute INTERNAL_IP6_ADDRESS in the first 16 bytes. |
|
Attribute |
ipsec:prefix-len |
|
Type |
Cisco AV Pair |
|
Format |
Integer |
|
Local config |
N/A |
|
Radius config |
cisco-avpair="ipsec:prefix-len=value" |
|
Example |
ipsec:prefix-len=24 |
|
Description |
Specifies the prefix length of the IPv6 address assigned to the client. This is pushed to client via IKEv2 standard configuration attribute INTERNAL_IP6_ADDRESS in the last (17th) byte. |
|
Attribute |
ipsec:ipv6-dns-servers-addr |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Local config |
ipv6 dns primary [secondary] |
|
Radius config |
cisco-avpair="ipsec: ipv6-dns-servers-addr=ipaddr1 *ipaddr2" |
|
Description |
Specifies the primary and secondary IPv6 DNS servers for the client. This is pushed to the client via IKEv2 standard configuration attribute INTERNAL_IP6_DNS. |
|
Attribute |
ipsec:route-set=access-list ipv6 |
||
|
Type |
Cisco AV Pair |
||
|
Format |
String |
||
|
Local config |
route set access-list ipv6 acl-name |
||
|
Radius config |
cisco-avpair="ipsec:route-set=access-list ipv6 acl-name" |
||
|
Description |
Specifies IPv6 subnets protected by the FlexVPN server. This is pushed to the client via IKEv2 standard configuration attribute INTERNAL_IP6_SUBNET.
|
|
Attribute |
ipsec:banner |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Local config |
banner text |
|
Radius config |
cisco-avpair="ipsec:banner=text" |
|
Description |
Specifies the banner text. This is pushed to the client via Cisco Unity attribute MODECFG_BANNER. |
|
Attribute |
ipsec:default-domain |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Local config |
def-domain name |
|
Radius config |
cisco-avpair="ipsec:default-domain=name" |
|
Description |
Specifies the default domain. This is pushed to the client via Cisco Unity attribute MODECFG_DEFDOMAIN. |
|
Attribute |
ipsec:split-dns |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Local config |
split-dns name |
|
Radius config |
cisco-avpair="ipsec:split-dns=name" |
|
Description |
Specifies the split DNS name. This is pushed to the client via Cisco Unity attribute MODECFG_SPLITDNS_NAME. You can configure up to 10 split DNS names. |
|
Attribute |
ipsec:ipsec-backup-gateway |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Local config |
backup-gateway name |
|
Radius config |
cisco-avpair="ipsec:ipsec-backup-gateway=name" |
|
Description |
Specifies the backup gateway. This is pushed to the client via Cisco Unity attribute MODECFG_BACKUPSERVERS. You can configure up to 10 backup gateways. |
|
Attribute |
ipsec:pfs |
|
Type |
Cisco AV Pair |
|
Format |
Integer |
|
Local config |
pfs |
|
Radius config |
cisco-avpair="ipsec:pfs=value" |
|
Description |
Specifies IPsec PFS (Perfect Forward Secrecy) enable/disable. This is pushed to the client via Cisco Unity attribute MODECFG_PFS. The value must be 0 to disable and 1 to enable. |
|
Attribute |
ipsec:include-local-lan |
|
Type |
Cisco AV Pair |
|
Format |
Integer |
|
Local config |
include-local-lan |
|
Radius config |
cisco-avpair="ipsec:include-local-lan=value" |
|
Description |
Enables or disables include local LAN. This is pushed to the client via Cisco Unity attribute MODECFG_INCLUDE_LOCAL_LAN. The value must be 0 to disable and 1 to enable. |
|
Attribute |
ipsec:smartcard-removal-disconnect |
|
Type |
Cisco AV Pair |
|
Format |
Integer |
|
Local config |
smartcard-removal-disconnect |
|
Radius config |
cisco-avpair="ipsec:smartcard-removal-disconnect =value" |
|
Description |
Enables or disables smartcard removal disconnect. This is pushed to the client via Cisco Unity attribute MODECFG_SMARTCARD_REMOVAL_DISCONNECT. The value must be 0 to disable and 1 to enable. |
|
Attribute |
ipsec:configuration-url |
|
Type |
Cisco AV Pair |
|
Format |
String |
|
Local config |
configuration url url |
|
Radius config |
cisco-avpair="ipsec:configuration-url=url" |
|
Description |
Specifies the URL for configuration download. This is pushed to the client via Cisco FlexVPN attribute MODECFG_CONFIG_URL. |
|
Attribute |
ipsec:configuration-version |
|
Type |
Cisco AV Pair |
|
Format |
Integer |
|
Local config |
configuration version version |
|
Radius config |
cisco-avpair="ipsec:configuration-version=version" |
|
Description |
Specifies the version of the configuration to download. This is pushed to the client via Cisco FlexVPN attribute MODECFG_CONFIG_VERSION. |
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