[ILUG] restrict telnet

[hrishy]

Hi Paul

Thank you very very much for your answer.I am actually
a 16 year old student and i am not full time sys
admin.
heeheh.But i am impressed by your quick anmnswers
thank you very much .You are really quick in
responding.

regards
Hrishy


 --- Paul Kelly <longword at esatclear.ie> wrote: >
hrishy wrote:
> > I am running redhat linux6.2
> 
> And you haven't been hacked yet?
> 
> Get RedHat 7.2 ASAP - and apply all the available
> updates.
> 
> > And iw ant to restrict
> > telnet acesses to some ports like 80,25 etc..Does
> > anybody have any idea on how to do this.
> 
> You have two choices. You can do it at the
> application level, or you can 
> do it through firewall rules. If you want to go with
> the former, 
> /etc/hosts.allow and /etc/hosts.deny can control
> access to a number of 
> services including telnet (why aren't you using
> ssh!) and ftp - have a 
> look at man 5 hosts_access. That won't cover Apache
> or sendmail but you 
> can restrict access to those through their own
> config files.
> 
> If you want to use firewall rules, check out the
> ipchains HOWTO on 
> linuxdoc.org for a 2.2 kernel, or if you updated to
> RedHat 7.2 with a 
> 2.4 kernel you should be using iptables in which
> case you should have a 
> look at http://netfilter.samba.org/ for help.
> 
> Paul.
> 
> 
> 
> -- 
> Irish Linux Users' Group: ilug at linux.ie
> http://www.linux.ie/mailman/listinfo/ilug for
> (un)subscription information.
> List maintainer: listmaster at linux.ie 

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