My company had an outside company configure DNS Servers for websites we host. Our instructions were to have them configure with the least amount of services running and with Iptables. I am new to Linux but I am able to adminster the DNS Servers. The DNS Servers are running on Redhat 9. I will like to know how can I find out if thier implentation of these servers went according our instructions. In other words I will like to verify their setup. Does anyone have like a template of what services shouldn't be running if you are using the box as just a outside DNS Server on REdhat 9? I will also like help finding out which account they have created. The Server is running on in text mode.

Thanks
D

The quickest way to determine what network services are running is to type 'netstat -tul' - I would expect to see ssh, 'domain' for DNS, ntp, and smtp.

You can see the active IPTables rules by typing:

/sbin/iptables -L

When I run that command this is what I get:




Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 *:10000 *:* LISTEN
tcp 0 0 dns1.iqinternet.:domain *:* LISTEN
tcp 0 0 dns1.iqinternet.:domain *:* LISTEN
tcp 0 0 *:ssh *:* LISTEN
tcp 0 0 dns1.iqinternet.co:rndc *:* LISTEN
udp 0 0 *:32768 *:*
udp 0 0 *:10000 *:*
udp 0 0 dns1.iqinternet.:domain *:*
udp 0 0 dns1.iqinternet.:domain *:*
udp 0 0 *:724 *:*

Is this is what I'm suppose to see?

Thanks
D

http://www.webmin.com

Handy little tool I use to administer my text only server at home. It has all the necessary helper pages for total system administration. And it runs in a web browser.

'domain' is DNS, as is 'rndc'. 'ssh' is obvious.

As dfctve_end_user says, Webmin is a top piece of software for admining UNIX servers. It's default port is 10000, so that probably explains those listings.

I don't know what is running on UDP port 724 - that isn't an officially registered port number. Try Google or:

netstat -tulp

The first column lists the actual name of the program using the port.