VPN
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Category: General Discussion
Forum Name: General Discussion
Forum Description: General discussion and chat on any topic.
URL: https://forums.webwiz.net/forum_posts.asp?TID=7312
Printed Date: 30 March 2026 at 1:12pm
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: VPN
Posted By: huwnet
Subject: VPN
Date Posted: 16 November 2003 at 8:43am
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I am trying to get a VPN to tunnel through my router. I am using Microsoft PPTP. Which ports do I need to open? I would use L2TP but I get an error saying: The connection attempt failed due to failure to encrypt data Someone help  Thanks in advance |
Replies:
Posted By: michael
Date Posted: 16 November 2003 at 9:00am
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With "VPN" being a somewhat generic term, there are several different protocols and ports you may have to deal with. Cisco's GRE tunnels use IP protocol 47. (By comparison, TCP is IP protocol 6 and UDP is IP protocol 17, so GRE is a "sibling" of the TCP and UDP protocols.) Microsoft VPN (i.e. PPTP) uses IP protocol 47 (GRE) and TCP port 1723. IPSec uses IP protocol 50 for ESP, IP protocol 51 for AH, and UDP port 500 for IKE. Novell Borderware VPN uses IP protocol 57, TCP ports 213 and 353, and UDP ports 353 and 2010. Other proprietary VPN solutions can use other combinations of protocols and ports, so you may have to dig around a little to find the specifics. ------------- http://baumannphoto.com" rel="nofollow - Blog | http://mpgtracker.com" rel="nofollow - MPG Tracker |
Posted By: huwnet
Date Posted: 17 November 2003 at 10:57am
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This is good except for one thing. I use a D-Link home router. I can turn on port forwarding for port 47 but I cannot turn on the GRE protocol. Does anyone have any other ideas?
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