Stuff I'm Up To

Technical Ramblings

OpenVPN & iptables — October 21, 2016

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. Then I discovered I could still successfully connect to the OpenVPN server, but I couldn’t route any traffic to internal hosts.

Turns out I’d forgotten to make my iptables firewall rules persistent.

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Linux Firewall — January 4, 2016

Linux Firewall

Arno is a manager for the iptables firewall. It’s pretty easy to setup and configure for the straightforward rules you need.

Install it using eth0 as your external interface if you only have one NIC

# apt-get install arno-iptables-firewall

Make Changes after you’ve installed it.

# dpk-reconfigure arno-iptables-firewall

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