topic Re: root login in Operating System - Linux

root login

Jees Joy — Mon, 14 May 2007 19:35:20 GMT

Hi friends

I am trying to login to ma remote machine via telnet as root user. I have editted the /etc/securetty file and added pts/0.

But still i was not able to login as root.

Can somebody help me friends.

Thanks in Advance.

Jees Joy

Re: root login

Steven E. Protter — Tue, 15 May 2007 00:21:48 GMT

Shalom,

telnet is disabled by default because authentication is in clear text. That means the root password goes across the network and anybody can see it. That can't be good.

Try connecting with ssh.

If you MUST enable telnet:

cd /etc/xinetd.d
ll
You will see a file marked telnet
edit it.
change disable=yes to disable=no

service xinetd restart

SEP

Re: root login

Alexander Chuzhoy — Tue, 15 May 2007 01:11:14 GMT

If you use X on that station, then you should add more lines with pts to /etc/securetty file. When a user opens a console - that uses pts/x, thus when you connect via telnet - that's another pts.

you can use the following script to add 20 pts lines to /etc/securetty file:
for i in `seq 1 20`; do echo pts/$i >> /etc/securetty; done

I join Steven , by telling that using telnet is not secured. Hope security is not an issue, otherwise consider using ssh.

Re: root login

Asif Sharif — Tue, 15 May 2007 01:53:58 GMT

Hi Joy,

Its better to use ssh for root login becasue its secure.Telnet is insecure protocol. It sends login and password in plain text format.Smart user can trap the packets and get the password,but in case you need to use telnet,then simply edit the file /etc/securetty and add the following to the end of the file:

pts/0
pts/1
pts/2
pts/3
pts/4
pts/5
pts/6
pts/7
pts/8
pts/9

This will allow up to 10 telnet sessions to the server as root.

Before doing that check your telnet service is running.I tried it on my machine its working.

Regards,
Asif Sharif

Re: root login

Jees Joy — Tue, 15 May 2007 11:18:24 GMT

Thank you friends

actually when I increased the number of pts/x it started working.

I wanted to use telnet for some service.

Thanks and lot friends.

Re: root login

Jees Joy — Tue, 15 May 2007 11:21:29 GMT

Please refer the threads.

Thanks

Re: root login

Prasad Bandale — Fri, 18 May 2007 00:20:36 GMT

Dear Jees Joy
If You Want To Login As Root Via Telnet.
Rename The /etc/securetty to /etc/securetty.bak