I've got a small / medium sized VPS powered by WHM and running a few personal websites alongside a Magento powered web-store. Not being a real expert when it comes to server configuration details I've hired someone recently to oversee a memcached installation and which appears to work.
After some further reading on my own though I've stumbled upon a tutorial which mentioned that the related port (11211 in our case) has to be included / added to the TCP_IN" and "TCP_OUT" section of CSF which right now is clearly not the case in our installation.
Is this a real requirement? Can I feel free to add this related port and are there any advantages / disadvantages when doing this?
Some expert advise would be truly appreciated.
Thank you very much.