couldn't you also just run dynamic ip software to keep track of the dynamic ips of site 1 and 2 and therefore always know their ip. this software could be housed on site 3.
From: Raymond Fung <raymondf@valentia.com.hk> To: suse-linux-e <suse-linux-e@suse.com> Subject: [SLE] interesting idea Date: Thu, 22 Mar 2001 05:32:02 +0800
Dear all,
I have an interesting idea here, but don't know if it is feasible to implement nor what kind of tools are needed to implement so. The situation is as follow :
There are 3 physically disjointed sites, all are LAN of computers. Two of the sites (namely site 1 and site 2) connects to the Internet through some masquerading / NAT device using dial-up connections (thus using dynamic IP and private IPs), while the third site (site 3) has fixed IP address. Now, computers in site 1 wants to telnet into computers in site 2. As both sites doesn't have fixed IP, can I make use of site 3 such that some software is run on a host at site 3 waiting for connection from computers from site 1 and 2. After the two connection are made, something like a VPN can be established through this site 3 host to link site 1 and 2 together ? It would be great if I can do whatever service available (such as ftp, telnet etc.) between site 1 and site 2. This can be represented as the diagram below :
+------------------+ | site 3 host with | | fixed IP | | | | +--+ +--+ | | | ?| <-->|? | | | +--+ +--+ | | | | | +------------------+ | | | | +--------------+ | | +--------------+ | site 1 host | | | | site 2 host | | with dynamic | +------+ | | +------+ | with dynamic | | IP address | --->| MASQ |------+ +----| MASQ | <---| IP address | | | |Device| |Device| | | +--------------+ +------+ +------+ +--------------+
Assumes that all computers are Linux based, can this be made possible ? What tools do I need to use ?
Regards, Raymond Fung.
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