Windows XP VPN issues

B

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.


Here are the ipconfig /all results from both the VPN server and the
friend who can ping me but whom I cannot ping:


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 they can ping and connect to shares on my
network but I can't ping them. They is not behind a firewall and is
connected directly to the internet. As for my other friend, I believe
that his router is stopping the traffic along the VPN since if he moves

his PC directly to the internet we can communicated using the VPN but
when he goes back behind the router we can't ping eachother. If anyone

can help with either/both of these issues I would really appreciate it.
 
R

Robert L [MS-MVP]

In the client 192.168.1.161, can your friend ping itself? also use the tracert command to check where is traffic go.

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.


Here are the ipconfig /all results from both the VPN server and the
friend who can ping me but whom I cannot ping:


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 they can ping and connect to shares on my
network but I can't ping them. They is not behind a firewall and is
connected directly to the internet. As for my other friend, I believe
that his router is stopping the traffic along the VPN since if he moves

his PC directly to the internet we can communicated using the VPN but
when he goes back behind the router we can't ping eachother. If anyone

can help with either/both of these issues I would really appreciate it.
 
Q

Quaoar

Robert said:
In the client 192.168.1.161, can your friend ping itself? also use the
tracert command to check where is traffic go.
Click to expand...

Robert - your message font size is about 6 points (or possibly even
smaller), making your responses very difficult to read.

Q
 
R

Robert L [MS-MVP]

Thanks

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
Quaoar said:
In the client 192.168.1.161, can your friend ping itself? also use the
tracert command to check where is traffic go.
Click to expand...

Robert - your message font size is about 6 points (or possibly even
smaller), making your responses very difficult to read.

Q
 

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