Setting Firewall di LinuxMint (UFW)

Secara default, linuxmint tidak mengaktifkan firewall-nya. Untuk memaksimalkan keamanan komputer kita, tidak ada salahnya kalau firewall di linuxmint di aktifkan dan di setting.

Cara install dan setting firewall di linuxmint/ubuntu
1. Install gufw via synaptic. gufw = GUI version dari UFW (Uncomplicated FireWall)
2. setting DENY untuk default incoming dan outgoing
3. Klik Edit > Add Rule > tambahkan port incoming dan outgoing yang di ijinkan. Contoh setting di komputer saya,

Firewall_linuxmint gufw

Keterangan
53/udp –> DNS
21/tcp –> FTP
80/tcp –> http
443/tcp –> https
587/tcp –> SMTP
993/tcp –> Internet Message Access Protocol over SSL (IMAPS)
5050 tcp –> Yahoo Messenger

Untuk cek status ufw di terminal : ketik sudo ufw status verbose

UFW status via terminal di linux mint

Referensi:
https://wiki.ubuntu.com/UncomplicatedFirewall?action=show&redirect=UbuntuFirewall
http://1000umbrellas.com/2010/04/29/how-to-set-up-the-firewall-using-ufw-on-ubuntu-lucid-lynx-server
http://www.kelvinism.com/2010/09/enable-icmp-through-ufw_461.html
http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers

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