LinuxQuestions.org
Visit the LQ Articles and Editorials section
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Security
User Name
Password
Linux - Security This forum is for all security related questions.
Questions, tips, system compromises, firewalls, etc. are all included here.

Notices



Reply
 
Search this Thread
Old 05-03-2008, 04:57 AM   #1
RattleSn@ke
Member
 
Registered: Oct 2007
Location: Netherlands, ZH
Posts: 32

Rep: Reputation: 15
Question outbound VPN's fail (pptp/l2tp/ipsec)


Hi there.

Fist of all, I did google for it, but I only get results that don't match my config.

My situation is as follows:

1.1.1.1 <----------> 2.2.2.2 / 172.0.0.5 <---> 172.0.0.6
Pub. VPN Server [FC6 Firewall/Router] WinXP SP2 Client

The FC6 router does the NAT etc. with IPTables for the internal 172-LAN.
The problem is that I can't connect to the public VPN server from my WinXP Client. For now I tried around 20 combo's of IPTables rules to get the VPN working but I failed in all ways.

On the client I tried it with the default windows VPN client and also with a third-party IPSEC-VPN client, but just no go.

I hope someone is willing to help me out with this?!

All the result I did find on the internet are based on the situation that the VPN-Server is behind an IPTables firewall. Which is not the case with me.

TIA.
Onno.
 
Old 05-03-2008, 05:09 AM   #2
datopdog
Member
 
Registered: Feb 2008
Location: JHB South Africa
Distribution: Centos, Kubuntu, Cross LFS, OpenSolaris
Posts: 806

Rep: Reputation: 41
are you connecting from the inside or the outside ? Your diagram seems to indicate that your winxp client is on the lan.
 
Old 05-21-2008, 04:33 PM   #3
RattleSn@ke
Member
 
Registered: Oct 2007
Location: Netherlands, ZH
Posts: 32

Original Poster
Rep: Reputation: 15
Hi datopdog,

I'm connecting from the inside (172.0.0.6), the XP-Client is indeed the connecting client.
Hope you can help me!

Thanks!
 
Old 05-21-2008, 04:55 PM   #4
sundialsvcs
Guru
 
Registered: Feb 2004
Location: SE Tennessee, USA
Distribution: Gentoo, LFS
Posts: 5,455

Rep: Reputation: 1172Reputation: 1172Reputation: 1172Reputation: 1172Reputation: 1172Reputation: 1172Reputation: 1172Reputation: 1172Reputation: 1172
Look at your system logs on both sides.

Use a tool like ethereal to monitor the traffic. Although you can't read it, you can see who's talking to whom.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
L2TP works bad, PPTP doesn't work at all kfir_w Linux - Networking 0 06-09-2007 06:04 AM
IPSec/L2TP mahesh_sonawane Linux - Networking 1 06-04-2007 02:32 AM
Opening a L2TP/PPTP tunnel from debian to win 2003 hq4ever Linux - Networking 2 01-23-2006 06:13 PM
IPSEC/L2TP VPN Server on Fedora Core 3 using Kernel 2.6 petwalrus Linux - Networking 3 04-21-2005 11:55 AM
IPsec/L2TP VPN question IPsecLearner Linux - Networking 3 04-19-2005 12:32 PM


All times are GMT -5. The time now is 11:50 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration