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DHCP IP address for Cisco Anyconnect VPN user

Hi,

Currently there is a requirement in our organisation to use DHCP Server to assign IP address for Remote VPN users.  The DHCP Service runs on a Windows server and I have created a scope that need to be assigned to the users. DHCP Server IP address is 10.61.100.120.

I have configured the below commands on the Cisco ASA.  The DHCP server is not directly connected to the firewall but has a reachability through inside interface.

!
interface GigabitEthernet0/0
 nameif inside
 security-level 100
 ip address 10.1.1.1 255.255.255.248
!
interface GigabitEthernet0/1
 nameif outside
 security-level 0
 ip address 185.100.19.2 255.255.255.240

group-policy WIN-VPN internal
group-policy WIN-VPN attributes
dhcp-network-scope 10.61.24.0
vpn-idle-timeout 240
vpn-tunnel-protocol ssl-client
password-storage disable
 webvpn
anyconnect profiles value win-vpn-profile type user

tunnel-group WIN-VPN type remote-access
tunnel-group WIN-VPN general-attributes
 authorization-server-group LDAP
 authorization-server-group (inside) LDAP
 default-group-policy WIN-VPN
 dhcp-server 10.61.100.120
 username-from-certificate CN
tunnel-group WIN-VPN webvpn-attributes
 group-alias WIN-VPN enable
 group-url https://vpn-test.xxx.com/WIN-VPN enable

After the user authentication , I see the IP address are not getting assigned to the user and getting failed connection. Also in the DHCP server, I see traffic from the ASA inside interface sending a query but see no reply from DHCP server.

Can someone help me if anything is missing in the above configuration. or do I need to setup anything on the DHCP server for these configuration to work.

Also I don't understand how this will work without enabling dhcp-reply on the Cisco ASA firewall ??

 Looking for a immediate reply for it.

1 Reply 1

JP Miranda Z
Cisco Employee
Cisco Employee

Hi Alexander Moorthy,

The configuration looks pretty good, if you want to double check it this guide gives you the config steps and explains how dhcp works with Remote Access Clients:

http://www.cisco.com/c/en/us/support/docs/security/anyconnect-secure-mobility-client/118084-configure-anyconnect-00.html

The server config is kind of out my scope but you can use this guide:

https://technet.microsoft.com/en-us/library/cc732584(v=ws.11).aspx

Hope this info helps!!

Rate if helps you!! 

-JP-