hi,
ive been having this problem for a while now, im behind a linux box which is running ip-masq on mandrake 9.1 (the box is mine btw), currently i can't get any file transfers incoming through msn (i use trillian for it), is there a relatively uncomplicated and secure way to try and get this to work at all?

or would trying to do this open up too big a security hole for me?

ive looked at the linuxdoc site with no success and im not really sure where else i can look, i googled too but didnt get anything useful either....

i on dialup with a dynamic ip assigned to me each time i connect, if you need more info just say so and i can provide