☩ Walking in Light with Christ – Faith, Computing, Diary

There is a brand new remote FreeBSD vulnerability in telnetd in all its versions starting from version 7 to 9. It is therefore advisable that the telnet daemon be completely disabled.

To disable telnetd on FreeBSD:

1. Open /etc/inetd.conf

freebsd# vi /etc/inetd.conf


2. Comment out the line

telnet stream tcp nowait root /usr/libexec/telnetd telnetd


e.g.:

#telnet stream tcp nowait root /usr/libexec/telnetd telnetd


3. Restart inetd

freebsd# /etc/rc.d/inetd restart


The whole remote root telnetd FreeBSD security advisory (SA), can be read here