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Vern, You can probably just configure the LinkSys to forward from the non-standard port to the standard port. In other words, block ports 21 and 23 at the LinkSys and have it forward 10021 and 10023 to the FTP and Telnet ports. I am pretty sure, however, that the port scanners that hackers use are smart enough to find these openings. Mark To: midrange-l@midrange.com cc: bcc: Subject: Changing ports used by TCP/IP servers vhamberg@attbi.com Sent by: midrange-l-admin@midrange.com 07/26/2002 11:29 PM GMT Please respond to midrange-l <font size=-1></font> I want to change the port used by telnet. I saw the postings on the archive that say to call qtcp/qtgsrv after changing the services table. Can this be done back in v3r7? Was there a PTF back that far? In the same vein, can something like this be done for ftp - or does ftp take the service table changes without intervention? I did not do a search on this. There seems to be a problem, though, with the standard Windows client, which does not seem to have a port argument for ftp. Maybe clients like Cute & WS-FTP do better? The reason for doing this is, we have 3 machines, 2 behind a LinkSys DSL/cable gateway (router), 1 out in front, naked to the world. I want to put all 3 behind the LinkSys, and then assign non-standard ports for telnet and ftp on the 3 boxes. Then I'll make the LinkSys forward traffic to each box according to port. (We'll get VPN someday, I hope, soon!) We do have a need for customers to upload data, as well as for us to connect to these boxes remotely. Thanks Vern _______________________________________________ This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@midrange.com To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/cgi-bin/listinfo/midrange-l or email: MIDRANGE-L-request@midrange.com Before posting, please take a moment to review the archives at http://archive.midrange.com/midrange-l.
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