VPN PPTP Ping traffic one way only?

Hi All,

The setup is an SBS2003 with all service packs (microsoft update) running
ISA 2000. We use RRAS for PPTP VPN clients. It had all been working fine for
acouple of years. What happens is a client can happly establish a VPN
connection but cannot ping the server, either the IP address bound as the
RRAS adapter or the actual LAN IP of the server. The server or other
computers on the work network can ping the connected VPN client. I assuming
its some sort of routing/binding problem but cannot figure it out? as if I
can ping one way why not the other. There isn't any filtering in RRAS. I've
reinstall RRAS twice, ran the internet connection wizard but still no joy. It
is behind a watchgaurd firewall which is passing through the PPTP traffic
fine. I've compared ISA to another working client and can't fine any
difference. Nothing had changed on the SBS box or the firewall and now we got
this problem. Even pinging with 1 byte of traffic doesn't work. HELP!?!?

Regards,

Brett

I have exactly the same problem. SBS 2003 Premium SP1 with ISA 2000.

Once the VPN client is connected it is unable to ping the server by ip
netbios name or fqdn.

Tried from different client computers, using different interne
connections, same thing.

My ipconfig when I connect from this remote workstation is:

PPP adapter ROSCO:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
Physical Address. . . . . . . . . : 00-53-45-00-00-00
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.16.18
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 192.168.16.18
DNS Servers . . . . . . . . . . . : 192.168.16.2

The server IP is 192.168.16.19 if looking at the details of the VP
connection.

Brett Mason Wrote:
> Hi All,
>
> The setup is an SBS2003 with all service packs (microsoft update
> running
> ISA 2000. We use RRAS for PPTP VPN clients. It had all been workin
> fine for
> acouple of years. What happens is a client can happly establish a VPN
> connection but cannot ping the server, either the IP address bound a
> the
> RRAS adapter or the actual LAN IP of the server. The server or other
> computers on the work network can ping the connected VPN client.
> assuming
> its some sort of routing/binding problem but cannot figure it out? a
> if I
> can ping one way why not the other. There isn't any filtering in RRAS
> I've
> reinstall RRAS twice, ran the internet connection wizard but still n
> joy. It
> is behind a watchgaurd firewall which is passing through the PPT
> traffic
> fine. I've compared ISA to another working client and can't fine any
> difference. Nothing had changed on the SBS box or the firewall and no
> we got
> this problem. Even pinging with 1 byte of traffic doesn't work
> HELP!?!?
>
> Regards,
>
> Bret

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I managed to browse the server shares on a laptop with a Verizo
Broadband wireless connection

In ISA, under Network Configuration, create a new LAT table with th
same address range (10.10.10.1 - 10.10.10.127)

Right-click Network Configuration, click Allow VPN network connections

In the RRAS server MMC, instead of relying on DHCP to dish out the VP
clients IP, use an IP range with a different subnet. Say your interna
network is in the 192.168.16.0 subnet, configure your VPN IP range i
RRAS server properties as static in the 10.10.10.0 subnet for instance
Give it a range of 127 addresses

After that I was unable to ping, but was able to browse using the un
path of the server as in \\servernam

Brett Mason Wrote:
> Hi All
>
> The setup is an SBS2003 with all service packs (microsoft update
> runnin
> ISA 2000. We use RRAS for PPTP VPN clients. It had all been workin
> fine fo
> acouple of years. What happens is a client can happly establish a VP
> connection but cannot ping the server, either the IP address bound a
> th
> RRAS adapter or the actual LAN IP of the server. The server or othe
> computers on the work network can ping the connected VPN client.
> assumin
> its some sort of routing/binding problem but cannot figure it out? a
> if
> can ping one way why not the other. There isn't any filtering in RRAS
> I'v
> reinstall RRAS twice, ran the internet connection wizard but still n
> joy. I
> is behind a watchgaurd firewall which is passing through the PPT
> traffi
> fine. I've compared ISA to another working client and can't fine an
> difference. Nothing had changed on the SBS box or the firewall and no
> we go
> this problem. Even pinging with 1 byte of traffic doesn't work
> HELP!?!
>
> Regards
>
> Bret

--
rrafiring
-----------------------------------------------------------------------
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View this thread: http://forums.techarena.in/showthread.php?t=61766

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