LAN to WAN VPN problems

Post new topic   Reply to topic    DD-WRT Forum Forum Index -> Atheros WiSOC based Hardware
Author Message
Bebel
DD-WRT Novice


Joined: 15 Feb 2011
Posts: 5

PostPosted: Tue Feb 15, 2011 14:35    Post subject: LAN to WAN VPN problems Reply with quote
Hi,

I am having a lot of trouble making connections to outside VPN servers from machines behind my WZR-HP-G300NH router running DD-WRT v24-sp2. The setup is as follows:

Internet--DSL modem--Router--LAN

The problem is as follows: I try to make a connection to VPN servers at my workplace from a machine (any one, Mac or PC) behind my router. I consistently get error 619 and the connection fails.

The DSL modem was originally a 2wire 2701HG-G, but for troubleshooting purposes I replaced it with a "straight" modem. (The 2wire is locked by my ISP and cannot have its routing, DHCP etc. functions disabled, i.e., it can't be put into bridge mode. I swapped it out to exclude it as the source of my problem.) So the modem currently connected is a plain old Thomson SpeedTouch ST516v6 in bridge mode. But the problem is the same in both cases.

HOWEVER, as soon as I put one of my machines in the DMZ, the connection succeeds, no problems at all!

Also, when I had the 2wire modem-router attached, I could plug a machine directly into it (effectively bypassing my DD-WRT router) and the VPN connection would succeed. (I can't do this with the SpeedTouch, obviously, because it doesn't have any spare Ethernet ports, being a plain vanilla modem.)

So it seems to me that all of this implies that the DD-WRT router is not directing VPN traffic properly.

Another bit of information: I seem to remember having a similar problem YEARS ago that I solved, I think, by disabling loopback in DD-WRT (on a WRT54G). But I can't find that setting in v24-sp2.

Finally, I have tried toggling STP and "Filter WAN NAT redirection". Checking Filter WAN NAT redirection seemed to work, for a moment, as I was able to make a connection once or twice, but then it went back to throwing error 619. Since then, nothing seems to work, i.e., I can't make a connection no matter what I do. Maybe the one or two times I was able to connect it was a traffic fluke. I haven't changed much else in the DD-WRT settings since setting up this router a few days ago.

I should also mention that I have tried to connect to 3 different VPN servers. Two are workplace PPTP servers. The third is a PPTP server I set up on an offsite DD-WRT router. I can connect to the third VPN no problem. It's the others that don't work. They all used to work back when I used a WRT54G and another Buffalo router (a WHP-something).

Any ideas?

Thanks very much in advance.
Sponsor
Bebel
DD-WRT Novice


Joined: 15 Feb 2011
Posts: 5

PostPosted: Tue Feb 15, 2011 22:44    Post subject: [SOLVED] LAN to WAN VPN problems Reply with quote
SOLVED

Reverted to Buffalo Pro Stock firmware (DD-WRT v24SP2-EU-US (08/19/10) std - build 14998) as per instructions given here: http://dd-wrt.com/wiki/index.php/Buffalo_WZR-HP-G300NH.

VPN connections now work as they should.
Display posts from previous:    Page 1 of 1
Post new topic   Reply to topic    DD-WRT Forum Forum Index -> Atheros WiSOC based Hardware All times are GMT

Navigation

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum