Re: Problems using VPN through a BT router

Hi Martin,

pptp needs TCP port 1723 and also IP type 47 GRE - note this is a type not a port number. I'm not that familair with the voyager router but most allow this to be opened.
simon

martin.howlett@xxxxxxxxx wrote:
Hi,

I have been trying to do a VPN to an SBS server but without much luck.

I use a 2 NIC set up and have a BT Voyager 220V router / modem going
to the external NIC on the server. I have opened the ports i think i
need to allow GRE and remote access and the remote access and OWA
works fine. However whenever i try the VPN it fails to connect.

I have opened ports:

TCP - 3389
TCP - 443
TCP - 4125
UDP - 1701
TCP - 1723
TCP - 500

as i have read here and there they are related to remote connecting /
VPN. However it still refuses. I know its something to do with the
ports as when i put the router into DMZ, it works perfectly! Would it
be acceptable to leave the router in the DMZ, as i have the firewall
on the server itself? Or need i need to open more ports or something?

Thanks in advance,

Martin

.

Relevant Pages

  • Re: 2 pc network - cant see host files from pc 2 on pc 1
    ... NEtBios is OFF for Tcp on both machines. ... > built into your router. ... ICS had it's day when most everyone was on dialup. ... >> the computer with the share should show ports 139 TCP and 445 TCP ...
    (microsoft.public.windowsxp.security_admin)
  • [VulnWatch] 3Com OfficeConnect Remote 812 ADSL router exposes internal LAN computers ports during ou
    ... ports during outbound and inbound TCP and UDP sessions. ... The 3Com 812 is a widely-deployed router, found in many ISPs ADSL lines. ... for internet access. ...
    (VulnWatch)
  • Re: Host-Probleme mit Firewall
    ... Dein Einwand ist natürlich richtig und spiegelt an sich meinen ... Da du einen Router besitzt, solltest du dich in die Problematik einlesen. ... TCP = Transmission Control Protocol ... die Ports 3000 und 3105 auf deinem System für die Protokolle TCP und UDP ...
    (microsoft.public.de.security.heimanwender)
  • RE: IM Programs
    ... want to block these ports. ... you don't need an explicit deny for the other ports. ... Access-list 101 deny any tcp any any eq 5000 ... >Now, when applying these to your firewall, make sure the number ...
    (Security-Basics)
  • Re: What should I block out with my new firewall software?
    ... >> block out that I don't use or need, like UDP or TCP. ... >> activity or attempts from outside hackers to penetrate these ports. ... never stop svchost from comunnicating on the Internet. ... > Web updates, as far as I know, are downloaded the same way that ...
    (comp.security.firewalls)
Quantcast