I have really forgot to keep up on my VCDX study path. So today a quick tidbit on the esxcfg-firewall command.
Many of us today will use the vCenter Client to change firewall ports on the ESX. One instance where I exclusively mess with the firewall from the command line using esxcfg-firewall is when I install Dell OpenManage. I am already in the console to install the agents so I might as well open the firewall from the console too.
This really applies to any kind of agent or software you add to your ESX installation. So if you find yourself already in the console why not save a step and do it from the cli?
Lets look at the command
# esxcfg-firewall -o 1311,tcp,in,OpenManageRequest
First is the command, esxcfg-firewall, -o is for openport, the 1311 is the port number, tcp is protocol, in is the direction and the final part is the name of the service.
Now if you want to see all of your esxcfg-firewall settings try:
Show if specifig service is enabled.
esxcfg-firewall -q [service name]
Of course typing esxcfg-firewall -h gives lots of good help.
Some links: (You can google and find a ton more)