Not that I know of. you can goggle ports for CSS or any other game for that matter, but unless you're running a router then it shouldn't be an issue anyways.
Have you tried:
"C:\Program Files\Valve\Steam\Steam.exe" -applaunch 240 -heapsize 512000
Put that in the properties of the CSS s.c. on your desktop.
512K ram is the biggest CSS will use, anything more will have no effect and will make things worse.