cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
355
Views
8
Helpful
2
Replies

VPN Communication Problem

Wyrwol666_2
Level 1
Level 1

I have created a working VPN between a remote PC with Cisco VPN Client and Easy VPN server on Cisco 1802 (DSL). The Router has an dynamic external IP and is accessible over DynDNS. The problem is not the VPN connetion, but the communication between the remote PC and LAN behind the router.

Ping functions to all devices on the LAN

telnet 25 functions

DNS functions

Access to shares is taking ages, functions then sometimes, usually runs it into a Timeout

HTTP is taking ages and breaks then

Remotedesktop to a 2k server breaks

Remotedesktop to a 2k3 server opens the server window, but before the login mask breaks

Application Security Log of the SDM:

JAN 16 14:09:35.902 PC Time DROP PKT Dropping tcp pkt 192.168.121.15:80 => 192.168.122.5:4293

JAN 16 14:11:35.662 PC Time DROP PKT Dropping tcp pkt 192.168.122.5:4302 => 192.168.121.15:3389

Any idea's what's wrong with the config?

2 Replies 2

5220
Level 4
Level 4

Hi there,

I see some issues here:

1. Increase the value in the command:

ip tcp synwait-time 10

2. Remove following command from the interface Dialer0 config:

ip route-cache flow

3. On the VPN client PC, open the SetMTU utiliy (in the VPN client folder) and set the MTU on the interface to 1300.

Start the above steps and test after each.

Please rate if this helped.

Regards,

Daniel

Thank's for help, the problem is solved. It was the VPN-Client version on the remote-PC.

I uninstall the Cisco VPN Client v4.7 and install v4.8. Now the VPN-communication is runnig great.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: