November 01, 2004
Practical Secure Port Knocking
Aug 11 10:00:46 kernel: FIREWALL:SRC=192.168.0.5 DST=192.168.0.3 LEN=60 TOS=0x10 PREC=0x00 TTL=64 PROTO=TCP SPT=32769 DPT=42 Aug 11 10:00:55 kernel: FIREWALL:SRC=192.168.0.5 DST=192.168.0.3 LEN=60 TOS=0x10 PREC=0x00 TTL=64 PROTO=TCP SPT=32770 DPT=196 Aug 11 10:00:57 kernel: FIREWALL:SRC=192.168.0.5 DST=192.168.0.3 LEN=60 TOS=0x10 PREC=0x00 TTL=64 PROTO=TCP SPT=32771 DPT=69
Example 1: Log entries (emphasis added).
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