We are having trouble when test the VPN remote-access with the above error. It returned domain name successfully when we run nslookup "router_IP" in window CMD but it keeps prompting the error window when we connected via Cisco Any Connect 3.1. We have Router cisco 3925, iOS Version 15.1(1)T1. Please help.
Updated1: Router's config
aaa new-model
aaa authentication login AuthenList local
aaa authorization network vpn-group local
username vpn1 secret 5 xxxx
crypto isakmp policy 10
encr 3des
hash md5
authentication pre-share
group 2
ip local pool remote-pool 10.223.131.35 10.223.131.50
crypto isakmp client configuration group cisco
key xxxx
pool remote-pool
crypto ipsec transform-set set1 esp-3des esp-md5-hmac
crypto dynamic-map map1 10
set transform-set set1
reverse-route
crypto map map1 client authentication list AuthenList
crypto map map1 isakmp authorization list vpn-group
crypto map map1 client configuration address respond
crypto map map1 10 ipsec-isakmp dynamic map1
interface GigabitEthernet0/1
ip address A.B.C.D xxxx
ip nat outside
ip virtual-reassembly
duplex auto
speed auto
crypto map map1
The error:
The VPN connection failed due to unsuccessful domain name resolution
when I entered the domain name of router's interface g0/1 from nslookup (server 8.8.8.8)**
Updated2:
I could do forward nslookup but reverse lookup (domain name -> IP) returns failed. Is it a problem?
Update3:
In router's config:
ip name-server 8.8.8.8
Best Answer
Seems that configuration of SSL VPN is not completed or incorrect (according to provided part of config). Try to read this guide and do a walk thru steps in it.