Cisco ASA 5500 AnyConnect Setup From Command Line


KB ID 0000943 Dtd 21/04/14


Also See Cisco ASA5500 AnyConnect SSL VPN

This procedure was done on Cisco ASA version 8.4, so it uses all the newer NAT commands. I'm also going to use self signed certificates so you will see this error when you attempt to connect.

AnyConnect VPN


1. The first job is to go get the AnyConnect client package, (download it from Cisco with a current support agreement). Then copy it into the firewall via TFTP. If you are unsure how to do that see the following article.

Install and Use a TFTP Server

Petes-ASA(config)# copy tftp flash

Address or name of remote host []?

Source filename []?anyconnect-win-3.1.05152-k9

Destination filename [anyconnect-win-3.1.05152-k9]? {Enter}

Accessing tftp://!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Writing file disk0:/anyconnect-win-3.1.05152-k9...

4807912 bytes copied in 549.790 secs (8757 bytes/sec)

2. Create a 'pool' of IP addresses that the ASA will allocate to the remote clients, also create a network object that covers that pool of addresses we will use later.

Petes-ASA(config)# ip local pool ANYCONNECT-POOL mask
Petes-ASA(config)# object network OBJ-ANYCONNECT-SUBNET
Petes-ASA(config-network-object)# subnet

3. Enable webvpn, set the package to the one you uploaded earlier, then turn on AnyConnect.

Petes-ASA(config)# webvpn
Petes-ASA(config-webvpn)# enable outside
INFO: WebVPN and DTLS are enabled on 'outside'.
Petes-ASA(config-webvpn)# tunnel-group-list enable
Petes-ASA(config-webvpn)# anyconnect image disk0:/anyconnect-win-3.1.05152-k9.pkg 1 
Petes-ASA(config-webvpn)# anyconnect enable

4. I'm going to create a local username and password, you may choose to use RADIUS or Kerberos AAA. I'm also going to create an ACL that we will use for split tunneling in a minute.

Petes-ASA(config)# username PeteLong password Password123
Petes-ASA(config)# access-list SPLIT-TUNNEL standard permit

5. Create a group policy, change the values to match your DNS server(s), and domain name.

Petes-ASA(config)# group-policy GroupPolicy_ANYCONNECT-PROFILE internal
Petes-ASA(config)# group-policy GroupPolicy_ANYCONNECT-PROFILE attributes
Petes-ASA(config-group-policy)# vpn-tunnel-protocol ssl-client
Petes-ASA(config-group-policy)# dns-server value
Petes-ASA(config-group-policy)# split-tunnel-policy tunnelspecified
Petes-ASA(config-group-policy)# split-tunnel-network-list value SPLIT-TUNNEL
Petes-ASA(config-group-policy)# default-domain value

6. Create a matching tunnel-group that ties everything together.

Petes-ASA(config-group-policy)# tunnel-group ANYCONNECT-PROFILE type remote-access
Petes-ASA(config)# tunnel-group ANYCONNECT-PROFILE general-attributes
Petes-ASA(config-tunnel-general)# default-group-policy GroupPolicy_ANYCONNECT-PROFILE
Petes-ASA(config-tunnel-general)# address-pool ANYCONNECT-POOL
Petes-ASA(config-tunnel-general)# tunnel-group ANYCONNECT-PROFILE webvpn-attributes
Petes-ASA(config-tunnel-webvpn)# group-alias ANYCONNECT-PROFILE enable

7. Then stop any traffic that is going to (or coming from) the remote clients from being NATTED.

Petes-ASA(config)# nat (inside,outside) 2 source static any any destination static OBJ-ANYCONNECT-SUBNET OBJ-ANYCONNECT-SUBNET no-proxy-arp route-lookup

8. Save the changes.

PetesASA(config)# write mem
Building configuration...
Cryptochecksum: 5c8dfc45 ee6496db 8731d2d5 fa945425

8695 bytes copied in 3.670 secs (2898 bytes/sec)

9. Give it a test from a remote client.

AnyConnect VPN

AnyConnect Commands to Copy and Paste

Simply change the values shown in red;

ip local pool ANYCONNECT-POOL mask
enable outside
tunnel-group-list enable
anyconnect image disk0:/anyconnect-win-3.1.05152-k9.pkg 1
anyconnect enable
username PeteLong password Password123
access-list SPLIT-TUNNEL standard permit
group-policy GroupPolicy_ANYCONNECT-PROFILE internal
group-policy GroupPolicy_ANYCONNECT-PROFILE attributes
vpn-tunnel-protocol ssl-client
dns-server value
wins-server none
split-tunnel-policy tunnelspecified
split-tunnel-network-list value SPLIT-TUNNEL
default-domain value
tunnel-group ANYCONNECT-PROFILE type remote-access
tunnel-group ANYCONNECT-PROFILE general-attributes
default-group-policy GroupPolicy_ANYCONNECT-PROFILE
address-pool ANYCONNECT-POOL
tunnel-group ANYCONNECT-PROFILE webvpn-attributes
group-alias ANYCONNECT-PROFILE enable
nat (inside,outside) 2 source static any any destination static OBJ-ANYCONNECT-SUBNET OBJ-ANYCONNECT-SUBNET no-proxy-arp route-lookup

Related Articles, References, Credits, or External Links

Cisco AnyConnect - Essentials / Premium Licences Explained

Cisco AnyConnect Setup from the ASDM

Cisco AnyConnect - PAT External VPN Pool To An Inside Address

Author: Migrated

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