Auf meinem Debian Datenbankserver ist die kern.log voll mit solchen Einträgen.
Der PC (192.168.178.2) hängt im lokalen Netz hinter einer Fritz!Box (192.168.178.1), externen Zugriff gibt es nur per VPN bzw. weitergeleitetem SSH-Port.
Die Fritz fungiert als Router/VPN-Server und DHCP-Server.
Die 192.168.178.2 wird per MAC fest zugewiesen (wobei der Debian seit Wochen nicht neu gestartet wurde).
Was versucht die Fritz!Box hier und wie kann ich das abstellen?
Code: Alles auswählen
Mar 29 19:42:56 ptLWL01 kernel: [3540856.725001] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=27752 DF PROTO=TCP SPT=39606 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:43:26 ptLWL01 kernel: [3540886.725075] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=55004 DF PROTO=TCP SPT=60077 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:43:53 ptLWL01 kernel: [3540913.922773] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=35991 DF PROTO=TCP SPT=41436 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:44:04 ptLWL01 kernel: [3540924.725652] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=7770 DF PROTO=TCP SPT=35533 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:44:34 ptLWL01 kernel: [3540954.725822] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=16544 DF PROTO=TCP SPT=58199 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:45:04 ptLWL01 kernel: [3540984.725335] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=36871 DF PROTO=TCP SPT=39507 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:45:34 ptLWL01 kernel: [3541014.725188] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=39297 DF PROTO=TCP SPT=49153 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:46:04 ptLWL01 kernel: [3541044.725026] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=37791 DF PROTO=TCP SPT=52562 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:46:34 ptLWL01 kernel: [3541074.724756] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=3346 DF PROTO=TCP SPT=35819 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:47:04 ptLWL01 kernel: [3541104.724883] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=45781 DF PROTO=TCP SPT=49893 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:47:34 ptLWL01 kernel: [3541134.724939] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=24581 DF PROTO=TCP SPT=52316 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:48:04 ptLWL01 kernel: [3541164.725509] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=35181 DF PROTO=TCP SPT=60025 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:48:34 ptLWL01 kernel: [3541194.725088] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=55859 DF PROTO=TCP SPT=37443 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:48:59 ptLWL01 kernel: [3541219.475762] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=39305 DF PROTO=TCP SPT=56252 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:49:09 ptLWL01 kernel: [3541229.725631] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=63673 DF PROTO=TCP SPT=35506 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:49:39 ptLWL01 kernel: [3541259.724865] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=33428 DF PROTO=TCP SPT=37175 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:50:09 ptLWL01 kernel: [3541289.724699] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=44602 DF PROTO=TCP SPT=41047 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:50:39 ptLWL01 kernel: [3541319.725224] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=6650 DF PROTO=TCP SPT=33352 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:51:09 ptLWL01 kernel: [3541349.725209] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=39799 DF PROTO=TCP SPT=33686 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
Mar 29 19:51:39 ptLWL01 kernel: [3541379.725530] Inbound IN=eth0 OUT= MAC=3c:4a:92:77:ad:43:c0:25:06:1a:c3:00:08:00 SRC=192.168.178.1 DST=192.168.178.2 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=18962 DF PROTO=TCP SPT=49463 DPT=14013 WINDOW=5840 RES=0x00 SYN URGP=0
root@ptLWL01:/var/log#