TMG:Change Management IP Address

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This article explains how to modify the management network interface of TMG800, TMG3200, TMG7800-CTRL (MGMT0) and the controls ports of the TMG7800-CTRL (ETH0, ETH1).


To avoid modification of the configuration files using 'vim' or 'nano', which is not very user friendly.

TelcoBridges created a shell script that simplifies the network configuration of the TMG.

The MGMT0 (for TMG800, TMG3200, TMG7800-CTRL) and ETH0, ETH1 (for TMG7800-CTRL) ports are configured in dhcp by default.

The script will allow you to modify:

  • Change IP address of the MGMT0, ETH0 and ETH1 ports
  • Change default network interface and/or IP address
  • Change DNS


TMG shell command

 tbchangeip


Change dhcp to static

This example changes the IP address from DHCP to static IP with no DNS server

  • Steps to modify mgmt0 from dhcp to static:
Do you want to modify the network settings (enter 'help' for usage) ?[No]                   --> yes
Do you want to modify mgmt0 ?[No]                                                           --> yes
Select network mode (dhcp or static) ?[dhcp]                                                --> static
Enter IP address ?[]                                                                        --> 192.168.0.40
Enter network mask ?[]                                                                      --> 255.255.255.0
  • Steps to modify the default gateway address (this is necessary to give an IP address when in static)
Would you like to modify the default gateway address ?[No]                                  --> yes
Enter default gateway ip address ?[]                                                        --> 192.168.0.1
  • Steps to remove the DNS configuration
Would you like to modify the DNS configuration ?[No]                                        --> yes
Would you like to reconfigure the DNS (enter 'remove' to erase dns) ?[No]                   --> remove
  • The script will show you the new configuration. Then you can acknowledge those changes.
Do you want to save this new configuration ?[No]                                            --> yes
  • You can ask the script to restart the network service to restart to apply the new configuration.
Would you like to restart the network service now ?[No]                                     --> yes


Change static to dhcp

This example changes the IP address from static to DHCP IP with DNS server (1 domain and 2 nameservers)

  • Steps to modify mgmt0 from static to dhcp:
Do you want to modify the network settings (enter 'help' for usage) ?[No]                   --> yes
Do you want to modify mgmt0 ?[No]                                                           --> yes
Select network mode (dhcp or static) ?[static]                                              --> dhcp
Select a dhcp name ?[TB006201]                                                              --> TB006201
  • Steps to modify the default gateway address (you should let the DHCP server give you the gateway address)
Would you like to modify the default gateway address ?[No]                                  --> yes
Which network interface do you want to set as default gateway address interface (mgmt0/mgmt1) --> mgmt0
Select the host dhcp name ?[TB006201]                                                       --> TB006201
  • Steps to configure the DNS (this example will setup 1 search domain and 2 nameservers)
Would you like to modify the DNS configuration ?[No]                                        --> yes
Would you like to reconfigure the DNS (enter 'remove' to erase dns) ?[No]                   --> yes
First search domain (enter 'remove' to remove entry)  ?[]                                   --> mynetwork.lan
Second search domain (enter 'remove' to remove entry)  ?[]                                  -->
First nameserver ip address (enter 'remove' to remove entry)  ?[]                           --> 192.168.0.10
Second nameserver ip address (enter 'remove' to remove entry)  ?[]                          --> 192.168.0.11
Third nameserver ip address (enter 'remove' to remove entry)  ?[]                           -->
  • The script will show you the new configuration. Then you can acknowledge those changes.
Do you want to save this new configuration ?[No]                                            --> yes
  • You can ask the script to restart the network service to restart to apply the new configuration.
Would you like to restart the network service now ?[No]                                     --> yes
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