WiFi: Simple Firewall

Encrypt packets sent is not enough.  We need to tighten controls what can access to / from our machines.  accordingly access control can be done by Firewall.

In Linux, this process can be done using a firewall,

# Iptables

In normal conditions / default, iptables will accept (Accept) all incoming packets (INPUT), exit (OUTPUT), forward (FORWARD).

Conditions / firewall settings can be Viewed through the command,

# Iptables L

To make us more comfortable hdup, it will be Easier to turn the firewall using the "shorewall" firewall.  Shorewall will enable the firewall by running the command,

# Shorewall start

To see whether it really has been active, we can see it through the command,

# Iptables L

It appears that iptables is now filled by a variety of firewall rules.  To turn off shorewall firewall is not Difficult to be Able to use the command

# Shorewall stop.

If you want to manually activate the shorewall firewall as well, this can be done using Webmin facility that can be installed on Linux.  If Webmin is installed it can usually be accessed via  http: // localhost: 10000  or  https: // localhost: 10000  .