Explanation Please? Home » CentOS » Explanation Please? April 3, 2015 James B. CentOS 1 Comment I am seeing log file entries like this: IN=eth0 OUT=eth1 SRC9.74.193.253 DST=x.y.z.34 LEN2 TOS=0x00 PREC=0x00 TTLH IDI692 PROTO=ICMP TYPE=3 CODE=3 [SRC=x.y.z.34 DST9.74.193.253 LEN
April 3, 2015 James B. CentOS 1 Comment I am seeing log file entries like this: IN=eth0 OUT=eth1 SRC9.74.193.253 DST=x.y.z.34 LEN2 TOS=0x00 PREC=0x00 TTLH IDI692 PROTO=ICMP TYPE=3 CODE=3 [SRC=x.y.z.34 DST9.74.193.253 LEN
IN=eth0 OUT=eth1 SRC9.74.193.253 DST=x.y.z.34 LEN2 TOS=0x00 PREC=0x00 TTLH IDI692 PROTO=ICMP TYPE=3 CODE=3 This is a “Port unreachable” message from host 109.74.193.253. [SRC=x.y.z.34 DST9.74.193.253 LEN
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IN=eth0 OUT=eth1 SRC9.74.193.253 DST=x.y.z.34 LEN2 TOS=0x00
PREC=0x00 TTLH IDI692 PROTO=ICMP TYPE=3 CODE=3
This is a “Port unreachable” message from host 109.74.193.253.
[SRC=x.y.z.34 DST9.74.193.253 LEN