Dear Sirs, I tried to modify code for TCP in linux kernel-2.2.14. My purpose was to make it stateless during connection establishment, so that it's free from SYN-attacks. At present this is what happens when any other machine tries to open a connection with this host : this host any other host <--------- SYN SYN+ACK ---------> <--------- ACK RST ---------> (despite the fact that ACK is a valid one) I wish to debug this. How can I go about it ? Is there some way I can go thru the stages that the packet goes thru, making the kernel display some message at each stage during tcp_rcv_msg ? Thanks and regards, Priyank. \\\|/// \\ ~ ~ // ( @ @ ) ____________________________oOOo-(_)-oOOo______________________________________ PRIYANK PORWAL Senior Undergraduate, Computer Science & Engineering, IIT Kanpur. Address : Room No. G-318/I, IIT Kanpur - 208016, INDIA. Phone : +91-512-597311 <current> , +91-522-359175 <permanent> _____________________________________Oooo._____________________________________ .oooO ( ) ( ) ) / \ ( (_/ \_) - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org