Cisco VPN client doesn't work with ADSL

[pitsy]

Hi,

I have a problem with Cisco VPN client and ADSL.

I created a configuration on Cisco 1721 to receive connections from Cisco VPN client.

When users use Dialer, the cisco vpn client works fine but when they use ADSl line, the communication don't work (the window stay on "contacting the security gateway at...." and nothing)

Have you an idea ?

Regards