hi all, plz let me know how can i execute a program everytime there is a match, for example, everytime my Linux box receives a packet with SYN bit ON, instead of taking normal actions like ALLOW,DROP,REJECT, i want to execute a command. google wasn't able to help me, hope this list will.. cheers, mayank. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com