Zentyal Forum, Linux Small Business Server

Zentyal Server => Installation and Upgrades => Topic started by: canadianis on January 16, 2012, 04:09:12 pm

Title: Multiple Concurrent Outgoing PPTP Connections
Post by: canadianis on January 16, 2012, 04:09:12 pm

Just looking to implement Zentyl as a gateway in our environment, I need to know if we have 4 people in the office can they all connect to an outside pptp VPN all at the same time through zentyl?

I can't seem to find anything in the forums or docs.

Title: Re: Multiple Concurrent Outgoing PPTP Connections
Post by: robb on January 16, 2012, 07:46:54 pm

Should Zentyal set up the PPTP tunnel or the client pc?

Title: Re: Multiple Concurrent Outgoing PPTP Connections
Post by: canadianis on January 16, 2012, 08:07:12 pm

The client would be initiating the VPN connection, I did do some testing on that and it will not allow multiple concurrent conections.

Title: Re: Multiple Concurrent Outgoing PPTP Connections
Post by: iepaul on January 26, 2012, 10:31:01 am

Is this a linux problem or a pptp problem?  A lot of firewalls appear to have this issue.  Is there any way around it?

Title: Re: Multiple Concurrent Outgoing PPTP Connections
Post by: xvendrell on August 02, 2012, 10:29:42 am

We have the same problem.
Without zentyal, we can conect 3 users with microsoft pptp client to outside PPTP server. But with zentyal, only one user can be conected.

We need help!!! ;)

Thanks

Title: Re: Multiple Concurrent Outgoing PPTP Connections
Post by: jsalamero on August 02, 2012, 12:55:21 pm

Try to load the pptp netfilter helper:

sudo modprobe nf_nat_pptp

Regards,

Title: Re: Multiple Concurrent Outgoing PPTP Connections
Post by: rubic on August 02, 2012, 03:20:38 pm

This is well-known GRE-NAT-Traversal problem. If you'll follow the jsalamero's advice, plese keep us informed about the results/

Title: Re: Multiple Concurrent Outgoing PPTP Connections
Post by: leros on December 04, 2012, 01:47:47 pm

Quote from: jsalamero on August 02, 2012, 12:55:21 pm

sudo modprobe nf_nat_pptp

I have the same problem with pptp.
This solve the problem?