Linux/Unix Tutorial for Beginners for firewall command
Автор: Coding GuruJi
Загружено: 2019-05-31
Просмотров: 554
This tutorial comprises of brief description with real time output of various options of the "firewall" command of UNIX.
The details about the various options are listed below :-
1.) The get-zones option lists the available zones in the firewall
firewall-cmd --get-zones
2.) The list-all option lists the details of the available zones
firewall-cmd --list-all
3.) The ---zone options lists or selects a particular zones
firewall-cmd --zone=external --list-all
4.) The set-default command sets the default zone in firewall.
firewall-cmd --set-default=external
5.) The add-service is used to add a service to a zone in firewall.
firewall-cmd --zone=external --add-service=samba
6.) The list-services is used to list the services attached to a particular zone.
sudo firewall-cmd --zone=external --list-services
7.) The firewall is restarted with the following command:-
firewall-cmd --reload
8.) The permanent option is used to make a change permanent.
firewall-cmd --permanent --zone=external --add-service=samba
9.) The remove-service is used to remove a service to a zone in firewall.
firewall-cmd --zone=external --remove-service=samba
10.) The add-port option is used to add a port to a zone.
firewall-cmd --permanent --zone=external --add-port=139/tcp
11.) To list the ports which are added to a zone we use list-ports option.
firewall-cmd --zone=external --list=ports
12.) The remove-port option is used to remove a port to a zone.
firewall-cmd --permanent --zone=external --remove-port=139/tcp
13.) Create a custom zone
firewall-cmd --permanent --new-zone=linuxconfig
14.) Associating a zone with an interface
firewall-cmd --permanent --zone=linuxconfig --add-interface=ens55
15.) To list the interfaces assigned to a zone
firewall-cmd --zone=linuxconfig --list-interfaces
16.) Removing a zone from an interface
firewall-cmd --remove-interface=ens55 --zone=linuxconfig
17.) Turn on panic mode
firewall-cmd --panic-on
18.) Turn off panic mode
firewall-cmd --panic-off
19.) To query panic mode status
firewall-cmd --query-panic
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