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AIX => Administration => Topic started by: cpalin on May 29, 2008, 03:09:53 AM



Title: Telnet
Post by: cpalin on May 29, 2008, 03:09:53 AM
I need help on configuring and setting up telnet on my aix box to use ports 8420 and 8422.
Can someone help on these.


Title: Re: Telnet
Post by: Michael on May 29, 2008, 07:46:36 AM
Outgoing is very simple - manually: telnet aixhost 8420 or telnet aixhost 8422

I often use telnet anyhost 80 to test for presence of the http server (or telnet anyhost 22 for ssh) - especially when ping fails - as ping gets blocked so often.

Further, for one of the two port numbers you can automate it somewhat.

Quote
root@nim[ / ]:grep telnet /etc/services
telnet                  23/tcp          # Telnet
telnet                  23/udp          # Telnet

root@nim[ / ]:grep telnet /etc/inetd.conf
telnet  stream  tcp6    nowait  root    /usr/sbin/telnetd      telnetd -a

Edit the lines in /etc/services to the port number you want. The first column (the keyword telnet) in /etc/inetd.conf substitutes for that number.

So what you will want is something like:
Quote
telnet                  8420/tcp          # Telnet modified
telnet                  8420/udp          # Telnet modified

Do not forget to verify that 8420 or 8422 is not in use by something else.