This sample configuration initially blocks traffic from external hosts to all devices on the internal network until browser authentication is performed using authentication proxy. After authorization, the access list passed down from the server (permit tcp|ip|icmp any any) adds dynamic entries to access list 116 that temporarily allow access from the external PC to the internal network.
Note: The AAA configuration used in this document is also applicable to Catalyst switches that run Cisco IOS® software.
There are no specific requirements for this document.
The information in this document is based on these software and hardware versions:
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
Refer to the Cisco Technical Tips Conventions for more information on document conventions.
In this section, you are presented with the information to configure the features described in this document.
Note: Use the Command Lookup Tool (registered customers only) to obtain more information on the commands used in this section.
This document uses this network setup:
This document uses this configuration:
| Cisco 3640 Router
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
aaa group server tacacs+ RTP
aaa authentication login default group RTP none
aaa authorization exec default group RTP none
aaa authorization auth-proxy default group RTP
enable secret 5 $1$pqRI$3TDNFT9FdYT8Sd/q3S0VU1
enable password ww
ip inspect name myfw cuseeme timeout 3600
ip inspect name myfw ftp timeout 3600
ip inspect name myfw http timeout 3600
ip inspect name myfw rcmd timeout 3600
ip inspect name myfw realaudio timeout 3600
ip inspect name myfw smtp timeout 3600
ip inspect name myfw sqlnet timeout 3600
ip inspect name myfw streamworks timeout 3600
ip inspect name myfw tftp timeout 30
ip inspect name myfw udp timeout 15
ip inspect name myfw tcp timeout 3600
ip inspect name myfw vdolive
ip auth-proxy auth-proxy-banner
ip auth-proxy auth-cache-time 10
ip auth-proxy name list_a http
ip audit notify log
ip audit po max-events 100
ip address 22.214.171.124 255.255.255.0
ip access-group 116 in
ip nat outside
ip auth-proxy list_a
no ip route-cache
no ip mroute-cache
no mop enabled
ip address 10.14.14.14 255.255.255.0
ip nat inside
ip inspect myfw in
!--- Interfaces deleted.
nat pool outsidepool 126.96.36.199 188.8.131.52 netmask 255.255.255.0
ip nat inside source list 1 pool outsidepool
ip nat inside source static 10.14.14.15 184.108.40.206
ip route 0.0.0.0 0.0.0.0 220.127.116.11
ip route 18.104.22.168 255.255.255.0 22.214.171.124
ip route 126.96.36.199 255.255.255.0 188.8.131.52
no ip http server
access-list 116 permit tcp host 184.108.40.206 host 220.127.116.11 eq www
access-list 116 deny tcp host 18.104.22.168 any
access-list 116 deny udp host 22.214.171.124 any
access-list 116 deny icmp host 126.96.36.199 any
access-list 116 permit icmp any any
access-list 116 permit tcp any any
access-list 116 permit udp any any
dialer-list 1 protocol ip permit
dialer-list 1 protocol ipx permit
tacacs-server host 188.8.131.52
tacacs-server key cisco
line con 0
transport input none
line aux 0
line vty 0 4
Refer to Important Information on Debug Commands before you issue debug commands.
Refer to Troubleshooting Authentication Proxy for command and troubleshooting information.
There is currently no specific troubleshooting information available for this configuration.