VPN problem

I am using a VPN to connect to my company network. When I use a normal dial-up connection to access the internet, the VPN work alright. The problem appear when I try to connect to VPN using a DSL. At home, we share a DSL connection via LAN. The problem is that the VPN client couldn't esablish a connection with this setup. Any solution
mth2020Asked:
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mrwaqarCommented:
are you using a VPN software client on your computer? If you are then try changing the following:
Modify the connection and go to "Transport" tab. Looks for "Enable Transport tunneling". This should be ticked. If it is not then enable it. Below that there are 2 options. IPSec Over UDP , IPSec Over TCP Port ____. You can try with both options one by one. In your case since you are using a DSL connection, it should work with 2nd option. The port should be "10000".

Hope this helps
Roachy1979Commented:
Its actually quite likely that you haven't allowed external access from the required port on your DSL router!

First find out what type of VPN connection is required then either allow external access for ports/protocols below:

1723 - PPTP, IP Protocol 47 (GRE)
L2TP: UDP Port 1701;
IPSec: UDP Port 500, Pass  IP protocol 50 and 51

If you need help configuring your router just post details of make and model :-)

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jeff_01Commented:
I Agree. Sounds like a firewall is stopping the connection.
snerkelCommented:
For outgoing VPN your router shouldn't need any port forwarding.

This is likely to be a subnet conflict, eg your work network is 10.x.x.x and your home router gives out an IP address 10.x.x.x

You need to connect by modem, then open a DOS box, type ipconfig  (this assumes XP)

Note the IP

Connect to router then run ipconfig again

If the IP is on the same subnet then you need to change the IP range on your router.
Roachy1979Commented:
<For outgoing VPN your router shouldn't need any port forwarding.>

This is true......but quite a lot of routers and firewalls also restrict 'external access' from internal IP's in their config......

Glad to help.

 
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