[vpn] RE: VPN Over Satellite

[Nahmias, Ran]

Richard,

I had a conversation with a friend yesterday who has some previous
experience with satellite communications. He said that the latency can be as
high as 6 seconds and the Windows max TTL is only three. 
They have solved it by installing proxy servers (cache the packets) on both
end thus increasing the TTL and enabling the tunnel to exist and stay alive.
I hope this helps.
-ran

-----Original Message-----
From: Georgina/Richard Burrell [mailto:burrell at telus.net]
Sent: Thursday, August 09, 2001 2:17 PM
To: VPN at SECURITYFOCUS.COM
Subject: VPN Over Satellite


Has anyone out their had any success in getting a VPN up and running using a
satellite modem between a client and a server.  I am trying to get my remote
access, which works perfectly fine over the normal dial up, to work over my
satellite connection and although I can get to the office router and through
the firewall, I cannot get the NT Server to authenticate.

Details:

Client running WinME with a PCI Satellite Network Adapter using IP address
204.101.xxx.xxx, mask 255.255.255.0 and the standard Windows VPN adapter
using IP address 192.168.xxx.xxx connecting to a Barricade router at address
24.65.xxx.xxx in front of an NT Server at address 192.168.xxx.xxx that
authenticates.

My dial up connection, which does uses the same configuration except for the
204.101.xxx.xxx address that is attached to the Satellite adapter, works
perfectly everytime.

Any suggestions.

Richard Burrell
Systems Manager
Country Grocer


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