I replied:We get the following messages (literally thousands and thousands), in the log files of every system on the same subnet as this system.
Mar 12 14:05:32 xxx-xxx kernel: iptables REJECT IN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff SRC=xxx.xxx.xxx.xxx DST=255.255.255.255 LEN=126 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=xxx DPT=4747 LEN=106
They replied:About the error, while I’m no expert, a couple things caught my attention. First, it mentioned iptables, second it said the #4747 which I guess refers to the port needed to communicate with the directory of places. I went to this page:
and it gives some info.
I wonder if it might relate to a problem that I've seen. I know that students have had a hard time sometimes adding the cmapserver because it doesn’t show up in the directory of places.
Any idea about the problems they are having with the log files getting jammed or why students can't find our CmapServer in their directory of places?The server would not be in the broadcast domain of any student so we're not clear why you think it would appear. It appears to be broadcasting its services and we would prefer it not do that. That seems to be the issue sort of like some printers that advertise their service on the subnet they are on like the old days of appletalk or novell service advertisement and as there are no clients for it in it's subnet, it should not be advertising or probing.