Windows XP Pro VPN issues

[bkboudreau]

Hello everyone,

Here is an interesting delema I am facing. I am running a VPN server
on a windows XP Pro box which is sitting behind my linksys WRT54GL
router. I have all the needed ports forwarded and people can connect
to my VPN and get a valid IP (192.168.1.160-170). The VPN server shows
on the .160 address. I have one friend that when connected we can't
ping each other. He is behind a linksys BEFSX41 v2 router. Then I
have another friend who is not behind any router and when they are
connected, they can ping me but I can't ping them. They have the
windows firewall turned off and have no other firewall software to
their knowledge.

If anyone can provide some insight as to how I can get this working I
would really appreciate it.

 

[Robert L [MS-MVP]]

posting the results of both VPN server and client ipconfig /all here may help.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
Hello everyone,

Here is an interesting delema I am facing. I am running a VPN server
on a windows XP Pro box which is sitting behind my linksys WRT54GL
router. I have all the needed ports forwarded and people can connect
to my VPN and get a valid IP (192.168.1.160-170). The VPN server shows
on the .160 address. I have one friend that when connected we can't
ping each other. He is behind a linksys BEFSX41 v2 router. Then I
have another friend who is not behind any router and when they are
connected, they can ping me but I can't ping them. They have the
windows firewall turned off and have no other firewall software to
their knowledge.

If anyone can provide some insight as to how I can get this working I
would really appreciate it.

 

[bkboudreau]

Sorry for taking so long to get back, my friend just got back into town
so i had to wait for the ipconfig. Here is what everything looks like:

Server:

PPP adapter RAS Server (Dial In) Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Internal RAS Server
interface for dial in clients
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.160
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . :



Ethernet adapter INET:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : SiS 900-Based PCI Fast
Ethernet Adapter
Physical Address. . . . . . . . . : 00-E0-18-74-E0-39
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.200
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.5
192.168.1.1

Client:

Windows IP Configuration



Host Name . . . . . . . . . . . . : *****
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:



Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : NVIDIA nForce Networking
Controller
Physical Address. . . . . . . . . :

Ethernet adapter Local Area Connection 2:



Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Marvell Yukon Gigabit
Ethernet 10/100/1000Base-T Adapter, Copper RJ-45
Physical Address. . . . . . . . . :
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 24.231.81.38
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 24.231.81.1
DHCP Server . . . . . . . . . . . : 24.139.0.21
DNS Servers . . . . . . . . . . . : 216.104.96.18
216.104.96.19
216.104.96.10
Lease Obtained. . . . . . . . . . : Thursday, July 27, 2006
7:25:04 PM
Lease Expires . . . . . . . . . . : Saturday, July 29, 2006
5:31:37 PM



PPP adapter RoB:

Connection-specific DNS Suffix . :

Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
Physical Address. . . . . . . . . : 00-53-45-00-00-00
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.161
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 192.168.1.161
DNS Servers . . . . . . . . . . . : 192.168.1.5
192.168.1.1

I just tested again and she can ping and connect to shares on my
network but I can't ping her. She is not behind a firewall and is
connected directly to the internet. Thanks again!