[Snort-users] Snort/Sniffing and CIDR blocks

Daniel Harrison danielh at ...690...
Fri Jan 26 17:33:44 EST 2001

I have been using snort as a sniffer (along as an ids) for  a while.
Today however was the first time I tried to use a CIDR block as the host
command. I have cleaned the ip address but I was trying to get a /30
which if memory serves me is 4 hosts. Is my syntax wrong or does this
really not work?

[root at ...1221... /root]# snort -dv host xx.xx.xxx.xx/30

        --== Initializing Snort ==--

Initializing Network Interface eth0
ERROR: OpenPcap() FSM compilation failed:
        non-network bits set in "xx.xx.xxx.xx/30"
PCAP command: host xx.xx.xxx.xx/30



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