I was surprised to see these BOOTP packets coming in from the internet. My red0 is connected to a cable modem. Would these packets be coming from my cable internet service provider? Or from the cable modem itself? Or from some malicious node using my cable company’s network? Or is this something to be expected? Any thoughts?
Mar 19 01:24:19 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 01:24:21 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 01:26:05 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 01:26:07 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 02:04:19 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.78.64.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 02:04:21 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.78.64.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 02:06:07 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 02:06:09 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 04:17:21 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 04:17:23 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 06:54:35 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.78.64.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 06:54:37 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.78.64.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 07:03:19 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 07:03:21 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 07:33:30 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 07:33:32 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 07:38:32 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 07:38:34 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 07:42:17 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 07:42:19 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 07:45:17 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 07:45:19 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 07:57:00 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
Mar 19 07:57:02 ipfire kernel: DROP_BOGON_FULLIN=red0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:01:5c:77:46:46:08:00 SRC=10.73.96.1 DST=255.255.255.255 LEN=381 TOS=0x00 PREC=0x00 TTL=64 ID=0 PROTO=UDP SPT=67 DPT=68 LEN=361
[Edit: Updated with full log lines from /var/log/messages]