[ale] RH6.0 and enabling 'telnet' and sibs

[Gary Maltzen]

Ignore the "-a off" recommendation; that's a totally different feature.

It isn't clear to me how to disable reverse DNS lookup by telnet - I wish I
knew how as `who` typically shows truncated names; most FQHN don't fit in
the 15-character UTMP/WTMP fields originally designed to hold IP addresses.
Fortunately TCPD logs the IP address.


       -h     Used by other servers (i.e.,  telnetd(8))  to  pass
              the name of the remote host to login so that it may
              be placed in utmp and wtmp.  Only the superuser may
              use this option.


     The source code is not comprehensible.

-----Original Message-----
 From: Bob Kruger <bkruger at mindspring.com>


>try adding "-a off" to the telnetd line in /etc/inetd.conf so that it
>doesn't attempt a reverse hostname lookup

Thanks for the hint.

I looked at this earlier, but could not find any reference to one of the
authentication modes needing DNS.  Would you happen to know which one it is?