Hi, If you want to get into it a bit deeper than a commercial solution, NDIS provides several levels of packet-filtering. You will need to get the latest version of the DDK, it's about $20. There are samples available on the internet, I don't have the urls availaible, write me if you're interested.
Obviously, you can use standard firewalls for pure port-blocking. Regards, Mark Hi, Winpcap is an excellent library and I have been using it to build some multicast testing tools. I want to write one application to block my son's instant message under certain conditions. I have two questions: 1) After "read_packet(&system_packet)", what happen to this packet? I guess that it goes to Window operating system. 2) How can I block a packet to the window OS after examining its content? If winpcap cannot block, is there other method to block packets or a particular UDP/TCP ports? Thank you very much Kwun-Nan Lin __________________________________ Do you Yahoo!? Yahoo! Domains - Claim yours for only $14.70/year http://smallbusiness.promotions.yahoo.com/offer ================================================================== This is the WinPcap users list. It is archived at http://www.mail-archive.com/[EMAIL PROTECTED]/ To unsubscribe use mailto: [EMAIL PROTECTED] ================================================================== ================================================================== This is the WinPcap users list. It is archived at http://www.mail-archive.com/[EMAIL PROTECTED]/ To unsubscribe use mailto: [EMAIL PROTECTED] ================================================================== ================================================================== This is the WinPcap users list. It is archived at http://www.mail-archive.com/[EMAIL PROTECTED]/ To unsubscribe use mailto: [EMAIL PROTECTED] ==================================================================
