How to change IP Address in Check Point firewall

To view IP Address information in Linux/UNIX, use ifconfig (F) command. It’s slightly different from Microsoft whereby ipconfig (P) command is used.

[R60-FW]# ifconfig

To change the IP Address, use the following command

ifconfig eth0 192.168.10.254 netmask 255.255.255.0 up

Again, use ifconfig command to verify it.

Even though we can change the IP Address of Check Point firewall by using this way, but it’s not advisable

Ifconfig is a temporary solution to change the ip address in the firewall. Once you’ve rebooted the firewall, it will be changed to the old ip address.

So, the best way to change IP Address of Check Point firewall permanently is by using sysconfigcommand:

[Expert@R60-FW]# sysconfig

Choose menu 5) Network Connections

    Choose a configuration item (‘e’ to exit):
——————————————————————
1) Host name                    7) DHCP Server Configuration
2) Domain name                  8) DHCP Relay Configuration
3) Domain name servers          9) Export Setup
4) Time and Date               10) Products Installation
5) Network Connections         11) Products Configuration
6) Routing
——————————————————————
(Note: configuration changes are automatically saved)
Your choice:5

2) Configure connection

    Choose a network connections configuration item (‘e’ to exit):
——————————————————————
1) Add new connection             4) Select management connection
2) Configure connection           5) Show connection configuration
3) Remove connection
——————————————————————
(Note: configuration changes are automatically saved)
Your choice:2

1) eth0

    Choose a connection to configure (‘e’ to exit):
——————————————————————
1) eth0
2) eth1
3) eth2
——————————————————————
(Note: configuration changes are automatically saved)
Your choice: 1

1) Change IP settings

    Choose eth0 item to configure (‘e’ to exit):
——————————————————————
1) Change IP settings                3) Remove IP from interface
2) Change MTU settings               4) Change from static to dynamic IP
——————————————————————
(Note: configuration changes are automatically saved)
Your choice: 1