VPN & PPPoE

[pmidwest]

We are trying to set up a VPN so that the boss can connect from home. He has windows xp with a linksys wireless server/router using PPPoE and sonicwall vpn
The VPN works fine when you dial up or connect over a cable modem but when you connect over the DSL and try to reply to mail it slows to a stop and disconnects (everything else seems to work fine)
Has anyone out there run into this?
Can anyone suggest anything to fix it?
Any help would be greatly appreciated.

Thanks in advance

Paul

 

[MKinniburgh]

Well, I have searched the threads high and low and thought I was the only person experiencing these issues.

I am experiencing similiar situation except have made a little progress. My configuration:

Laptop -> Linksys BEFSR41 DSL/Cable Router (PPoE connect) -> Westell Dsl - ADSL (750/128 kbps) Verizon Internet -> Work VPN Gateway.

All connections work fine to the Internet.

When I esablish a connection through VPN software to the network VPN connects and autheticates but intermiitently and randomly drops the VPN connection. I have experienced this issue using both Secure-Remote SP 4.1??? or higher (the one that's supposed to work over NAT) as well as with Microsoft VPN DUN.

Just two nights ago I connected directly to the VPN without using the Linksys Router. I had to reinstall verizon's WinPoet PPOe software. The connection held strong with this direct method

I upgraded the linksys router firmware to the latest version on the linksys website and re-introduced the router into the equation. The VPN connection now works consistently!

Questions for anyone?

1. The current PPOE software is still installed? is this helping the VPN connection?

2. Is the latest firmware upgrade fixing the issue v 1.44?

3. Will my securemote connection now actually connect throught the router? (laptop at work - can't try tonight)

In order to get the configuration working I needed the following setup in the linksys router:

MTU - Enabled 1492 (all connected computers to LAN NO Registry tweaks on MTU - see speedguide.com)

Pass Through enabled for IPSEC and PPTP.

These where the key issues. Although the linksys.com knowledge base pages suggested forwarding ports 47 -> 1723 and 50 -> 500. Frankly this didn't make any difference in my setup.

Additionally, the wireless function is something I haven't played with yet. I think there may be some general config issues with WEP. But if the laptop, connected through wireless, can access the internet, there shoouldn't be a problem as far as I am aware. If anyone out there knows more about wireless, WEP, and VPN - much appreciated.

Good luck and let me know

 

[pmidwest]

We keep a nice strong connection with the VPN untill we go to send an e-mail... E-mail will download fine and we can even send small e-mails but if we try to reply or send a bigger e-mail it locks up. we tested the MTU to see if it was sending to much at one time and we set it down to like 1366 I beleve is the number we came up with after testing and it still didnt work... after changing the MTU speed on the router should we reboot the computer or is there anything else anyone can think of?

Thanks

Paul