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Old 04-07-2009, 04:33 PM   #61
rhel5
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Location: Bay Area, CA
Distribution: Redhat Enterprise Linux
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Thanks C!

descarte's blog is awesome...I will spend more time reading it.

I think I just answered my own question. You cannot use the GUI Firewall tool and the iptables command at the same time because it conflicts. I tested the sshd by enabling it in the GUI Firewall by checking the SSH Service. Then I used the command iptables -t filter -A INPUT -s 192.168.0.25 -p tcp --dport 22 -j REJECT. The sshd is still accepting the ssh connection from the machine 192.168.0.25

I get the message "ssh: connect to host 192.168.0.15 port 22: no route to host" after disabling it from the Firewall GUI and then using only the iptables command.

Is that the correct message I should be getting with the REJECT action from iptables?

Also, after entering the iptables command, do I need to do service iptables restart? Because I am doing a service iptables save, and then the service iptables restart command. I heard that you have to use the save function in order to make the iptables changes persistent.
 
Old 04-15-2009, 09:12 AM   #62
StormWarden
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Registered: Apr 2009
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FWIW, I used Jang's book along with with the Prep Guide and the Red Hat documentation http://www.amazon.com/Certified-Engi...6972703&sr=8-1

But the best advice that was given to me was...

* READ all the directions before you start
* read ALL the directions before you start
* read all THE directions before you start
* read all the DIRECTIONS before you start
* read all the directions BEFORE you start
* read all the directions before YOU start
* read all the directions before you START
* READ ALL THE DIRECTIONS BEFORE YOU START

Sage advice indeed for anyone else looking to take these exams. I nearly blew the first portion of the RHCT - the simplest part - because I did not read the directions thoroughly.
 
  


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