IRC typically uses port 6667, though there is no reason to not use another port. IRC is generally plaintext. However, it can be encrypted by means of an SSL connection to the server, if supported.A friend of mine uses IRC quite a bit; just downloaded X-Aqua chat to play around. One question I had that he wasn't sure about was security. What port does IRC use? What security do you implement when using IRC? Is there a potential for someone connecting and downloading to my Mac to gain user or root access easily? Any good sites you have crossed that has this info?