The iptables rules must be unloaded.

The iptables rules must be unloaded.

If using Qubes, disable qubes-iptables and qubes-firewall systemd services. Non-Qubes users can skip this.

<pre>
sudo systemctl mask qubes-iptables
sudo systemctl stop qubes-iptables
sudo systemctl mask qubes-firewall
sudo systemctl stop qubes-firewall
</pre>

{{Open File|filename=~/fw-unload}}

Add.

{{Firewall_Unload}}

Save.

Make ~/fw-unload executable.

<pre>
chmod +x ~/fw-unload
</pre>

Unload all iptables firewall rules.

<pre>
sudo ~/fw-unload
</pre>

After firewall unload, run the following command to see if all firewall rules are really unloaded.

<pre>
sudo iptables-save | sed -e 's/\[[0-9:]*\]/[0,0]/' -e '/^#/d'
</pre>

The output should show.

<pre>
*mangle
:PREROUTING ACCEPT [0,0]
:INPUT ACCEPT [0,0]
:FORWARD ACCEPT [0,0]
:OUTPUT ACCEPT [0,0]
:POSTROUTING ACCEPT [0,0]
COMMIT
*raw
:PREROUTING ACCEPT [0,0]
:OUTPUT ACCEPT [0,0]
COMMIT
*nat
:PREROUTING ACCEPT [0,0]
:INPUT ACCEPT [0,0]
:OUTPUT ACCEPT [0,0]
:POSTROUTING ACCEPT [0,0]
COMMIT
*filter
:INPUT ACCEPT [0,0]
:FORWARD ACCEPT [0,0]
:OUTPUT ACCEPT [0,0]
COMMIT
</pre>