Bonsoir,
Adopté, c’est simplement ce que je cherchais…
Pour ma compréhension,j’ai visité syslog pour comprendre l’enregistrement fait avec ceci :
# Toutes les autres connexions sont enregistrées dans syslog
#$IPTABLES -t filter -A OUTPUT -j LOG
$IPTABLES -t filter -A INPUT -j LOG --log-level=4
Mais a vrai dire je sais pas quoi chercher … quelle type de ligne et comment les traduires …
Mon iptables (58420=SSH) :
root@lagache:/home/irena# iptables -S
-P INPUT DROP
-P FORWARD DROP
-P OUTPUT ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j LOG
-A INPUT -p icmp -j DROP
-A INPUT -p tcp -m tcp --dport 58400 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 58410 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 58420 -j ACCEPT
-A INPUT -j LOG
[code]root@lagache:/home/irena# iptables -L
Chain INPUT (policy DROP)
target prot opt source destination
ACCEPT all – anywhere anywhere
ACCEPT all – anywhere anywhere state RELATED,ESTABLISHED
LOG icmp – anywhere anywhere LOG level warning
DROP icmp – anywhere anywhere
ACCEPT tcp – anywhere anywhere tcp dpt:58400
ACCEPT tcp – anywhere anywhere tcp dpt:58410
ACCEPT tcp – anywhere anywhere tcp dpt:58420
LOG all – anywhere anywhere LOG level warning
Chain FORWARD (policy DROP)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination[/code]
Et enfin au redémarrage de mon pc, les dernières lignes se syslog :
May 12 18:47:26 lagache kernel: [ 27.002602] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: Rx/Tx
May 12 18:47:26 lagache kernel: [ 27.002606] e1000e 0000:00:19.0: eth0: 10/100 speed: disabling TSO
May 12 18:47:26 lagache kernel: [ 27.004069] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
May 12 18:47:27 lagache kernel: [ 27.262042] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=230 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=210
May 12 18:47:27 lagache kernel: [ 27.293154] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=142 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=122
May 12 18:47:27 lagache kernel: [ 27.512352] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=230 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=210
May 12 18:47:27 lagache kernel: [ 27.762552] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=230 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=210
May 12 18:47:27 lagache kernel: [ 27.962755] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=212 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=192
May 12 18:47:28 lagache kernel: [ 28.446942] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=142 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=122
May 12 18:47:28 lagache kernel: [ 28.946909] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=179 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=159
May 12 18:47:28 lagache kernel: [ 29.115485] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=212 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=192
May 12 18:47:29 lagache kernel: [ 29.196786] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=179 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=159
May 12 18:47:29 lagache kernel: [ 29.447216] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=179 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=159
May 12 18:47:29 lagache kernel: [ 29.647751] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=167 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=147
May 12 18:47:29 lagache freshclam[1907]: ClamAV update process started at Sat May 12 18:47:29 2012
May 12 18:47:29 lagache freshclam[1907]: main.cvd is up to date (version: 54, sigs: 1044387, f-level: 60, builder: sven)
May 12 18:47:29 lagache freshclam[1907]: daily.cld is up to date (version: 14915, sigs: 170977, f-level: 63, builder: guitar)
May 12 18:47:29 lagache freshclam[1907]: bytecode.cld is up to date (version: 176, sigs: 39, f-level: 63, builder: neo)
May 12 18:47:29 lagache kernel: [ 29.789523] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=167 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=147
May 12 18:47:29 lagache kernel: [ 29.992719] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=179 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=159
May 12 18:47:30 lagache kernel: [ 30.243063] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=179 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=159
May 12 18:47:30 lagache kernel: [ 30.493246] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=179 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=159
May 12 18:47:30 lagache kernel: [ 30.597430] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=199 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=179
May 12 18:47:30 lagache freshclam[1907]: --------------------------------------
May 12 18:47:30 lagache kernel: [ 30.693749] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=167 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=147
May 12 18:47:31 lagache kernel: [ 31.266480] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=240 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=220
May 12 18:47:31 lagache kernel: [ 31.845644] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=167 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=147
May 12 18:47:33 lagache kernel: [ 33.996964] IN=eth0 OUT= MAC= SRC=192.168.1.10 DST=224.0.0.251 LEN=167 TOS=0x00 PREC=0x00 TTL=255 ID=0 DF PROTO=UDP SPT=5353 DPT=5353 LEN=147
May 12 18:48:23 lagache kernel: [ 83.768844] soffice.bin[2441]: segfault at 7fd4f94535b8 ip 00007fd50041161c sp 00007fff57a6e158 error 4 in libvcllx.so[7fd500194