Enable Telnet on AIX 1

[surfguy]

HI All,

How can I enable telnet on my AIX server?

Regards,
Riccardo

 

[surfguy]

once i set it, do i need to reboot the box?

regards,
Riccardo

 

[TSch]

Hi there,

you have to edit the

/etc/inetd.conf

file.

Just remove the # in front of the line containing the telnet entry.

After that perforam a

refresh -s inetd

and if that does not work restart the subsystem using

stopsrc -s inetd
startsrc -s inetd

There's no need do reboot.

However ... Telnet should be enabled by default on your system. How comes it is disabled ??

Regards
Thomas

 

[surfguy]

Well it was disabled for security reason....

Anyway, deleted the "#", then start/stop inetd,
but when i try to telnet i get this error:


telnet 1.2.3.4
connecting to 1.2.3.4...Could not open connection to the host, on port 23: Connect Failed


any suggestion?

Regards,
Riccardo

 

[khalidaaa]

can you ping your system?

 

[TSch]

Now that's strange ...
This is supposed to do the trick.

Well, let's see ...

First of all the inetd.conf line should look like this:

telnet stream tcp6 nowait root /usr/sbin/telnetd telnetd -a

What do you get, when you run

ps -ef | grep inetd

?

The process must have the current date if you did a stopsrc and startsrc ...

What's the output of

lssrc -a | grep inetd

?

Does the process number shown there change when you perform another stopsrc and startsrc on inetd subsystem an the repeat the lssrc command ?

Anyway the subsystem should show up as "active" ...

Regards
Thomas

 

[TSch]

Here's another thing you might check:

Is there a file existing on your machine called

/etc/hosts.allow
/etc/hosts.deny

?

If so rename these files (e.g. hosts.allow.save / hosts.deny.save), restart the inetd subsystem and try again to telnet to your machine ...

Regards
Thomas

 

[surfguy]

Hi All,

I can ping the AIX box, in inetd.conf i have this line:

telnet stream tcp6 nowait root /usr/sbin/telnetd telnetd -a


ps -ef | grep inetd
root 34366 36918 0 13:03:21 - 0:00 /usr/sbin/inetd
prosys 44516 55840 0 13:53:06 pts/0 0:00 grep inetd

22: lssrc -a | grep inetd
inetd tcpip 34366 active

Then i was looking for those files /etc/hosts.allow
/etc/hosts.deny, but i can't find them...

Regards,
Riccardo

 

[TSch]

Hello again,

check the

/etc/services

file. It should contain the following lines without # in front of it:

telnet 23/tcp # Telnet
telnet 23/udp # Telnet

Regards
Thomas

 

[TSch]

Oh, and one more thing ...

Could there be a firewall somewhere in your network blocking Port 23 ?

 

[surfguy]

TSch

i'm trying from a machine that is in the same network,
in /etc/services telnet has a comment "#", i deleted it,
do i need to stop/start something?

Regards,
Riccardo

 

[p5wizard]

yes, refresh -s inetd again.

also make user that the telnetd executable is still there...

ls -l /usr/sbin/telnetd


HTH,

p5wizard

 

[TSch]

Hi,

as far as I know you won't have to restart anything after that ... But a stopsrc and startsrc on inetd can never hurt ;-)

Did the line look like this ?

#telnet 23/tcp # Telnet

?

Then it's ok to delete the #
Don't delete the # behind 23/tcp

You might also check, whether your user is telnet enabled using

smitty user

There should be a line containing

User can LOGIN REMOTELY(rsh,tn,rlogin)

This has to be set to "true".

Regards
Thomas

 

[surfguy]

All,

OK guys, it looks like i can telnet now.

regards,
RIccardo