A chronological documentation test project, nothing serious, really!
Multiport The Multiport extension allows you to specify multiple ports and ranges and makes it possible to create complex rules in one line. Here’s an example of how you can allow SSH, Web, IMAP and X terminal traffic iptables -A INPUT -p tcp -m multiport –dports 22,80,143,6000:6003 -j ACCEPT The alternative to using this rule […]
ufw (Uncomplicated Firewall) is a new and easy firewall/iptables tool introduced in Ubuntu 8.04 LTS (Hardy Heron). ufw is a front-end for iptables-restore, with its rules saved in /etc/ufw/before.rules, /etc/ufw/after.rules and /var/lib/ufw/user.rules. Administrators can customize before.rules and after.rules as desired using the standard iptables-restore syntax. Rules are evaluated as follows: before.rules first, user.rules next, and […]
I’ve always wanted to use Adobe Photoshop Lightroom to store the central library database on a network drive and be able to access it from different computers. This has not been possible because Lightroom is not a multiuser enabled software, and if you try to use a network drive you get the following error message […]
It is a good idea to place a log chain just above your drop or reject rule and usually you would do a -A INPUT -j LOG The above rule can cause flooding your system. You should instead use the following iptables rule to avoid your logs being flooded and DDOS’ing -A INPUT -m limit […]
It can sometimes be difficult to determine which networcard is eth0, eth1 and so on. A easy way to determine it is to use the ethtool command ethtool -p eth0 10 This makes the network cards LED blink for 10 seconds, and this happens without interrupting the network traffic. You do offcourse need physical access […]