Tags » Iptables

How to block unwanted IP addresses on Linux efficiently

You may want to block IP addresses on your Linux box under various circumstances. For example, as an end user you may want to protect yourself from known spyware or tracker IP addresses. 1,076 more words


Iptables Essentials: Common Firewall Rules and Commands


Iptables is the software firewall that is included with most Linux distributions by default. This cheat sheet-style guide provides a quick reference to iptables commands that will create firewall rules are useful in common, everyday scenarios. 2,576 more words


Saving Iptables Firewall Rules Permanently

The actual iptables rules are created and customized on the command line with the command iptables for IPv4 and ip6tables for IPv6.

These can be saved in a file with the command… 357 more words


OpenVPN & iptables

Some time ago I setup an OpenVPN server so we could securely logon to IT systems from outside the network. This worked really well until I rebooted it the other day. 619 more words


Install openvpn server on DS107e

DS107e needs to have ipkg and bootstrap installed, if not, please refer to this guide; Then using ipkg to install openvpn package:

ipkg install openvpn… 543 more words

Creating knockd with iptables

Having a knock daemon in front of your sensitive service is always a good idea. It won’t protect against a direct, planned attack, but it will avert random port scanners looking for vulnerabilities at random IP addresses. 903 more words

How to connect complex networking infrastructures with Open vSwitch and LXC containers

Some days ago, I learned How to create a overlay network using Open vSwitch in order to connect LXC containers. In order to extend the features of the set-up that I did there, I wanted to introduce some services: a DHCP server, a router, etc. 1,914 more words