Win2k3 single NIC VPN routing problem
- From: Christian Hewitt <usenet@xxxxxxxxxxxxxxx>
- Date: Sat, 5 Nov 2005 13:39:59 +0000
Hi,
I have an all-in-one standalone Win2k3 server (DNS, WINS, DHCP, no-AD, Fileserver + Apache + other apps) that i've got RRAS installed on and setup as a home VPN server. The server is an old laptop with a built-in *single* NIC. I travel in various parts of the middle east where internet access is more restricted and governments (or hotels) block a variety of protocols and websites (not just for anti-Pr0n.. business stuff too - e.g. anywhere in Israel) and I want to be able to VPN connect to home, route all of my traffic through the tunnel, and thus bypass some of the blocking hassles whenever possible.
I have a Netgear ADSL firewall/modem box that uses PAT mappings to direct the required VPN ports from my single static public IP to the VPN/Win2k3 server. I can connect remotely to the server over PPTP with no problems and my VPN client is given an IP address on the same subnet as the VPN server. I have a small 20-IP DHCP range for LAN connected clients (other laptops and the odd server). The VPN server uses another small group of addresses in the same subnet. When VPN connected I can access any resources on the Win2k3 server, ping it, resolve DNS names via the server.. but I can't access any other network resources (eg. ping the Netgear router) or anything on the internet.
My VPN client is the native one built into OSX 10.4. This works fine at a whole bunch of other places, so while it's not a Windows client, it's not assumed to be part of the problem.
I strongly suspect this is a routing issue.. which is where my knowledge falls short.
This is the routing table on the VPN server with my client dialled in:
IPv4 Route Table
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x10002 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP) Interface
0x10003 ...00 d0 59 0c 80 10 ...... Intel(R) PRO/100+ MiniPCI - SecuRemote Miniport
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.16.1 192.168.16.250 20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.16.0 255.255.255.0 192.168.16.250 192.168.16.250 20
192.168.16.100 255.255.255.255 127.0.0.1 127.0.0.1 50
192.168.16.102 255.255.255.255 192.168.16.100 192.168.16.100 1
192.168.16.250 255.255.255.255 127.0.0.1 127.0.0.1 20
192.168.16.255 255.255.255.255 192.168.16.250 192.168.16.250 20
207.237.44.80 255.255.255.255 192.168.16.1 192.168.16.250 20
224.0.0.0 240.0.0.0 192.168.16.250 192.168.16.250 20
255.255.255.255 255.255.255.255 192.168.16.250 192.168.16.250 1
Default Gateway: 192.168.16.1
===========================================================================
Persistent Routes:
None
Other info:
Netgear Router = 192.168.16.1 VPN server = 192.168.16.250 My VPN client IP = 192.168.16.102 My remote IP = 207.237.44.80 VPN DHCP range = 192.168.16.100 thru 109 (my client = 102)
Any ideas?
Christian
.
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