Welcome to IT Knowledge Exchange. I know I’m a little biased, but that place is here! We have a strong enterprise IT community asking and answering questions related to a wide range of IT topics, including TCP/IP and Security. Feel free to click on those links to browse the conversations occurring in those topics.
I hope you find what you’re looking for here; feel free to drop me a line at jenny AT itknowledgeexchange DOT com with any feedback or questions.