SUMMARY: Network Address Translation

From: Trevor Osatchuk <trevor.osatchuk_at_pscl.com>
Date: Mon, 27 Nov 2000 12:05:24 -0700

Thanks to the following people for responding:

Dr. Tom Blinn
John Venier
Armin Ollig

There seemed to be some confusion as to what I was asking, so I will attempt
to clear it up. I was referred to 'nslookup' and 'named' which deal with
name servers. The Network Address Translation daemon on FreeBSD defines
it's functionality as(man page excerpt):

     Natd changes all packets destined for another host so that their source
     IP number is that of the current machine. For each packet changed in
     this manner, an internal table entry is created to record this fact.
The
     source port number is also changed to indicate the table entry applying
     to the packet. Packets that are received with a target IP of the
current
     host are checked against this internal table. If an entry is found, it
     is used to determine the correct target IP number and port to place in
     the packet.

So basically you can have any number of computers on one network
communicating on another network without the second network having any
knowledge of the first. This is how I manage to have five computers surfin'
the web at home with only one IP.

Armin gave me the following link:

http://cheops.anu.edu.au/~avalon/ip-filter.html

Which is the home page of the "IP Filter" software. From what I have read
and gathered from the esteemed colleagues mention earlier, there is
currently no nat software available for Tru64 4.0f. I heard a rumor that it
will be included in 5.1. I can't substantiate that right now. So, I will
have to find and purchase a license from a third party vendor, or I can get
the source for "IP Filter" and port it over to Tru64, which probably will
take about an hour.(Warning! previous comment was dripping with sarcasm)
Original post follows:


I have looked in the archives for this and haven't been able to find any
information. Is there any Network Address Translation functionality
inherent in Tru64 4.0f? I have a FreeBSD box that runs natd (Network
Address Translation Daemon), is there anything like that for Tru64?


Trevor Osatchuk
Process Solutions Canada Ltd.
Support and Integration Analyst
(780) 452-2227 Ext. 286
trevor.osatchuk_at_pscl.com
Received on Mon Nov 27 2000 - 19:13:39 NZDT

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