General discussion

Locked

MSProxy behind VPN router

By mcpbev ·
I have a client with MS Proxy server behind a Cisco 1720 VPN router. Which port and protocol must be opened on the Proxy server to allow the VPN traffic through, in order for the VPN client to authenticate in the network and then communicate with the network?

This conversation is currently closed to new comments.

3 total posts (Page 1 of 1)  
| Thread display: Collapse - | Expand +

All Comments

Collapse -

MSProxy behind VPN router

by NetTek In reply to MSProxy behind VPN router

As far as the Proxy, install RRAS, install PPTP, enable PPTP filtering, and set up the VPN adapters. I don't know of any "ports" on the server that you need to configure. If you have firewall software, you should enable IP protocol 47 (GRE), TCP port 1723. Also make sure that UDP ports 137 and 138, and TCP port 139, are enabled and set for unicast traffic on all firewalls and routers or else NetBIOS packets won't pass. Also make sure your ISP does not filter IP protocol 47 (GRE) packets. Check with Cisco for any additional ports you may need to enable on the router. However, since it is a VPN router, it may already be configured with the correct ports and protocols. After you set up VPN, make sure you reinstall the latest SP to install any security updates. SP6a corrects numerous problems with PPTP and security. www.win2000mag.com has numerous good articles on RAS, VPN, and Proxy.

Collapse -

MSProxy behind VPN router

by mcpbev In reply to MSProxy behind VPN router

Poster rated this answer

Collapse -

MSProxy behind VPN router

by mcpbev In reply to MSProxy behind VPN router

This question was closed by the author

Back to Windows Forum
3 total posts (Page 1 of 1)  

Operating Systems Forums