Tag Archives: Firestarter

How to configure Firestarter to use VPN services on Linux

VPN LinuxIn my experience Firestarter is a effective firewall and, on Linux, it starts automatically every time we boot up Ubuntu. But, when I decided to use a VPN tunnel through openvpn, I had some connection problems. In fact I was able to initialize my VPN services but, after a while, all the internet connections were mysteriously shut down.

The “problem” was Firestarter which cut off the connection as forbidden considering my inbound/outbound Policy.

To solve this matter you have to open a tunnel on Firestarter to allow VPN working:

1- open the configuration file my VPN provider gives to its users (generally its a text file containing all the configuration info used, in my case, by openvpn) and I searched for the IP address of the default starting connection used to authenticate the VPN services (e.g. 177.458.563.25). Save somewhere or memorize this VPN IP address.

2- open a Terminal and type:

sudo nautilus

3- using nautilus go to File System (it’s before home folder) and open etc–>firestarter and open the file user-pre using Gedit (or your preferred text editor)

4- the user-pre file is usually empty so don’t panic and write these lines into it:

iptables -A INPUT -j ACCEPT -s xxx.xxx.xxx.xxx -p esp
iptables -A INPUT -j ACCEPT -s xxx.xxx.xxx.xxx -p udp -m multiport -sports isakmp,10000
iptables -A INPUT -j ACCEPT -i tun+
iptables -A OUTPUT -j ACCEPT -d xxx.xxx.xxx.xxx -p esp
iptables -A OUTPUT -j ACCEPT -d xxx.xxx.xxx.xxx -p udp -m multiport -dports isakmp,10000
iptables -A OUTPUT -j ACCEPT -o tun+

Now you have to substitute the xxx.xxx.xxx.xxx with the VPN IP address you have found at step 1 (in my example was 177.458.563.25).

5- Save the user-pre file and close Gedit and Nautilus

6- open a new Terminal and restart Firestarter typing:

sudo /etc/init.d/firestarter restart

That’all! Now your VPN works on your Linux computer and Firestarter has accepted a new Routed IP Tunnel into its allowed policies configuration.  AddThis

Configurar Iptables con Firestarter en ubuntu by josealeguinea


Security package (Rev. 1.2) for Ubuntu: antivirus, firewall and P2P stealth

Linux PageLast May, in our Linux Page (in Spanish), we posted some suggestions about a basic security package for Linux. After less than one year we are back on this topic also because more than something has changed. As you know, Linux is the safer OS you can use today: specific Linux viruses are few and malware is rare but with the increasing of users some threads are becoming real. For this reason, I strongly believe that nowadays a firewall, like Firestarter, is not enough and we all need also a good antivirus and Moblock: the program which allows to use the Peer Guardian lists on Ubuntu protecting your privacy. Today, in our Linux package we’ve posted a short updated manual where we explain how to install a firewall (Firestarter), an antivirus (ClamAV) and a P2P stealth (Moblock). We have tested all this software on a Ubuntu 7.10 without relevant problems; the combined use of this triplet is strongly recommended for people who desire to preserve their data and privacy. Read us! AddThismp3 link