I recently set up some egress firewall rules on a machine being used purely as a secondary for mail and DNS. All other outgoing services are blocked.
However, I'm seeing the following occasional outgoing calls in the log - does anyone know what they might be?
Feb 19 07:14:05 edith kernel: IN= OUT=eth0 SRC=80.68.x.x DST=184.108.40.206 LEN=40 TOS=0x00 PREC=0x00 TTL=64 ID=20548 DF PROTO=TCP SPT=1817 DPT=3247 WINDOW=52560 RES=0x00 ACK RST URGP=0
Feb 18 15:12:31 edith kernel: IN= OUT=eth0 SRC=80.68.x.x DST=220.127.116.11 LEN=40 TOS=0x00 PREC=0x00 TTL=64 ID=21627 DF PROTO=TCP SPT=2310 DPT=3669 WINDOW=51840 RES=0x00 ACK RST URGP=0
Feb 17 04:04:11 edith kernel: IN= OUT=eth0 SRC=80.68.x.x DST=18.104.22.168 LEN=40 TOS=0x00 PREC=0x00 TTL=64 ID=61952 DF PROTO=TCP SPT=1391 DPT=3496 WINDOW=5840 RES=0x00 ACK RST URGP=0