Ubuntu HowTos and Guides

Tutorials, howtos, Q & A about most popular Linux distribution – Ubuntu Linux. Topic includes Ubuntu server security, installation, firewall, web-server, mail-server, proxy server and special focus on desktop users. ( rss feed ).

NFS was not designed with security in mind, and has a number of weaknesses, both in terms of the protocol itself and because any NFS installation must expose several daemons, running on both servers and clients, to network attack. I use my Debian / Ubuntu Linux based server only to server web pages and nothing else. How do I disable NFS services under Debian or Ubuntu Linux?

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I want to add more RAM to my server running Ubuntu Linux. How do I find out my current RAM chip information such as its speed, type and manufacturer name within a Linux system without opening the case?

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I‘m typing the following command under Ubuntu Linux:

route add default gw 192.168.3.2 eth0

But it is giving me out the following error:

SIOCADDRT: File exists

How do I fix this problem?

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How can I kill a process using the bash command prompt? Do I always need to kill the process using PID?

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How do I flush all IPv4 and IPv6 iptables rules under Ubuntu Linux?

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When I try to restart my BIND 9 server under Ubuntu Linux using service bind9 restart or service bind9 start command, I get the following error:
resolvconf: Error: /etc/resolv.conf must be a symlink

How do I fix this problem?

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