topic Re: linux in Operating System - Linux

linux

Ashok Kumar B S — Fri, 30 Nov 2007 07:37:08 GMT

How to block a particular user from telnet service

Re: linux

Ivan Ferreira — Fri, 30 Nov 2007 09:10:53 GMT

Please see this very recent thread:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1169829

Re: linux

sandeep mathur — Tue, 04 Dec 2007 07:14:40 GMT

check out
iptables -A INPUT -s --dport 23 -j DROP.

at the iptables file
then for ftp same as above but --dport 21
ssh 22

Re: linux

Steven E. Protter — Tue, 04 Dec 2007 07:51:07 GMT

Shalom,

The iptables command can be adjusted to block a hostname or IP address.

If however you wish to block one user and let others in, you need to build code into /etc/profile to detect and eject that user.

SEP

Re: linux

palaniappan.sp — Fri, 07 Dec 2007 10:56:36 GMT

Hi,

U can deny the user from telnetting to ur m/c by putting the user name in /etc/host.deny and more over u can specify the user name in /etc/xinetd.d/telnetd
Only_from = < allowed user>

The second thing if u have configured proxy, u can able to control the telnet access based on the user acl.

let me know if u required any details

Regds
Palani