Re: VPN with 2 XP Home

Tech Tip: Click here to run a free scan for Windows Errors and optimize PC performance

From: Bob (spam_at_spam.com)
Date: 04/26/04 

Date: Mon, 26 Apr 2004 14:39:44 GMT

On Mon, 26 Apr 2004 05:01:06 -0700, "=?Utf-8?B?S2F0aGk=?="
<anonymous@discussions.microsoft.com> wrote:

>Ok so I went back and modified the router settings to only forward port 1723

On both machines? You must forward port 1723 on both machines.
Although the terms VPN Server and VPN Client are used, packets can
originate from either machine, and therefore the receiving machine
must be allowed to pass packets thru port 1723.

>and disabled DMZ. I am still getting the 721 error?

PPTP VPN also requires that protocol 47 (GRE) packets be allowed to
pass thru both routers. Usually this is called "PPTP Passthru".

If you have any firewalls in the PC, disable them to see if they are
interferring. Don't just turn off the GUI - you must Disable the
firewall engine using the GUI.

If you are running that known virus called "Zone Alarm", throw it away
and get a decent firewall like Kerio (free to the home user).

"msconfig" is helpful in finding hidden startups. 

-- 
Map Of The Vast Right Wing Conspiracy:
http://www.freewebs.com/vrwc/
"You can all go to hell, and I will go to Texas."
--David Crockett

Relevant Pages

  • Re: Babysitting on iptables requested :-)
    ... for acceptance? ... > that is destined to port range 137-139, tcp as well as udp, incoming ... > between Windows machines, so without this a Windows machine in your ... MS packets from my LAN to the gateway ...
    (comp.os.linux.security)
  • Re: Update: UDP 770 Potential Worm
    ... > I still believe that the packets may be the result ... with the goal of knocking machines ... the network immediately after the 'attack', ... destined to port if you haven't sniffed it somehow? ...
    (Incidents)
  • Re: cannot use Nortel vpn with ADSL router ?
    ... The router has NAT enabled and serves as the ... | use Nortel's Contivity VPN client). ... A network trace revealed 3 packets being exchanged ... | my machine seems to choose a random UDP port. ...
    (comp.security.firewalls)
  • Re: Opening UDP ports
    ... >>This is what I get when I log filtered packets when the VPN Client can't ... Port 500 is the ISAKMP port. ... So you should allow reply packets ... > just allow UDP packets with source port 500 from that peer's IP ...
    (comp.security.firewalls)
  • Re: Opening UDP ports
    ... >This is what I get when I log filtered packets when the VPN Client can't ... >is sending from port 500 and hitting my Firewall on port 64256. ... So you should allow reply packets ... just allow UDP packets with source port 500 from that peer's IP ...
    (comp.security.firewalls)