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Host Firewall Basics


Introduction[edit]

It is recommended to use a simple host firewall and deny any incoming connections on all ports. For a Linux host OS like Debian, Ubuntu and Arch Linux, gufw provides a simple graphical user interface for the Uncomplicated Firewall program. [1] It is easy to perform common tasks like blocking or allowing P2P, individual, or pre-configured ports.

How-to: Install and Configure a Firewall[edit]

The following steps install gufw on a Debian host.

1. Install gufw. 

sudo apt-get update && sudo apt-get install gufw

2. Start gufw. 

gufw

3. Press Unlock. Enter the password.

4. Press Enabled. [2]

5. Check the settings.

By default, the settings should be Incoming: Deny and Outgoing: Allow.

Although not recommended, users can add special firewall rules, use pre-configured options for common programs and services, or set other advanced options in gufw by following this guide.

For further information on firewalls, see here.

References[edit]

  1. ↑ Uncomplicated Firewall by itself only provides a command-line interface for managing the netfilter firewall. Iptables are used by the program for configuration.
  2. ↑ The firewall is disabled by default.

License[edit]

Whonix Host Firewall Basics wiki page Copyright (C) Amnesia <amnesia at boum dot org>
Whonix Host Firewall Basics wiki page Copyright (C) 2012 - 2018 ENCRYPTED SUPPORT LP <adrelanos@riseup.net>

This program comes with ABSOLUTELY NO WARRANTY; for details see the wiki source code.
This is free software, and you are welcome to redistribute it under certain conditions; see the wiki source code for details.

No user support in comments. See Support.

Comments will be deleted after some time. Specifically after comments have been addressed in form of wiki enhancements. See Wiki Comments Policy.


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