[syslog-ng]iptables.log

How to exclude such lines from logging? IN=net0 OUT= SRC=xxx.xxx.xxx.xxx DST=xxx.xxx.xxx.xxx LEN=xx TOS=0xxx PREC=0xxx TTL=xx ID=xxxx DF PROTO=xxx SPT=xxxx DPT=137 WINDOW=xxxxx RES=0xxx XXX URGP=X --