Can ssh but cannot telnet

[mohdamir]

Hi Gurus,
I have a problem where one of my servers can ssh but cannot telnet. I've checked the /etc/inetd.conf and /etc/services but found nothing unusual. Hope you guys can help.

TQ

[mohdamir]

/etc/services file

[Jeeshan]

do some check

1. Apply command "inetd -c" and try to telnet.
2. If not, try to telnet from localhost.
#telnet localhost 23

[HejALL]

Check in /etc/services what is your telnet port.
Then do
#telnet localhost
if successful then try to to do telnet to the same port from another server. If not successful then check with network team if the port is blocked or not.
But must the protocol is enable in /etc/inetd.conf.
try restarting inetd inetd -c

[mohdamir]

This is what it come out when I execute telnet localhost.

root[/] # telnet 127.0.0.1
Trying...
Connected to 127.0.0.1.
Escape character is '^]'.
telnetd: Telnet device drivers missing: No such device
Local flow control off
Connection closed by foreign host.
root[/] # telnet 127.0.0.1 23
Trying...
Connected to 127.0.0.1.
Escape character is '^]'.
telnetd: Telnet device drivers missing: No such device
Connection closed by foreign host.

[Johnson Punniyalingam · Accepted solution]

Hi Mohdamir,

Do you have any session with root user?

If so,

# cd /
# rm /dev/pty/*
# rm /dev/pts/*
# insf -e
# cd /dev
# insf -d telm
# insf -d tels

Else try to login with single user mode and do the above.

Rgds,
Johnson,

[Jeeshan]

>>telnetd: Telnet device drivers missing: No such device

The pseudo terminal device files have been corrupted or some are missing. Do this:

rm /dev/pts/*
rm /dev/pty/*
cd /dev
insf -e
insf -d telm
insf -d tels

[mohdamir]

Wala.. Thanks guys! (^_^)

[mohdamir]

Thanks guys..