search for: tcps_established

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2005 Jun 29
10
TCP Snoop & wrapper shell script posted
Hi , I have posted DTrace script to snoop tcp traffic and also provided a wrapper script for it to filter out unwanted traffic. http://blogs.sun.com/roller/comments/raviswam/Weblog/tcp_snoop_using_dtrace Please let me know if you have any feedback/comments on this. Thanks Ravi
2004 Apr 23
1
Proposed RST patch
...-------------- next part -------------- diff -u -r /usr/src/sys.old/netinet/tcp_input.c /usr/src/sys/netinet/tcp_input.c --- /usr/src/sys.old/netinet/tcp_input.c Thu Apr 22 01:15:15 2004 +++ /usr/src/sys/netinet/tcp_input.c Fri Apr 23 22:13:18 2004 @@ -1570,6 +1570,10 @@ goto close; case TCPS_ESTABLISHED: + if (tp->last_ack_sent != th->th_seq) { + tcpstat.tcps_badrst++; + goto drop; + } case TCPS_FIN_WAIT_1: case TCPS_FIN_WAIT_2: case TCPS_CLOSE_WAIT: diff -u -r /usr/src/sys.old/netinet/tcp_var.h /usr/src/sys/netinet/tcp_var.h --- /usr/src/sys.old/netinet/tcp_var.h T...