On my CentOS box that I use mainly as a web server, I have iptables set to log and reject anything that I don't expect. So lately, I have getting things like this: Mar 29 17:27:20 mbrc20 kernel: IPT-DROP IN= OUT=lo SRC=192.168.9.20 DST=192.168.9.20 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=46910 DF PROTO=TCP SPT=56624 DPT=80 WINDOW=32792 RES=0x00 SYN URGP=0 OPT (0204400C0402080A4A26F7A50000000001030307) UID=0 that on at least one occasion repeated for every few seconds for more than three hours. The ephemeral source port keeps changing in an irregular manner. Any suggestions? Thanks, Mike