[Snort-users] BPF Filters

Turnbough, Bradley E. bturnbough at ...15650...
Fri Nov 14 16:06:56 EST 2014


Hi All,

I've been running snort for quite a while now with no problems.  I would like to set up a BPF filter to ignore ESP encapsulated traffic.

As a test, I created a file called snort-em1.bpf and placed the following rule in it:

!(src net 192.168.10.0/24 && dst port 22)


Then I attempted to start snort:

/usr/sbin/snort -i em1 -u snort -g snort -c /etc/snort/snort-em1.conf -f /etc/snort/bpfs/snort-em1.bpf -l /var/log/snort/em1

However, snort refuses to start:

ERROR: Can't set DAQ BPF filter to '/etc/snort/bpfs/snort-em1.bpf' (pcap_daq_set_filter: pcap_compile: syntax error)!


Can someone please help me?

Brad
_____________________________________________________________ This e-mail transmission contains information that is confidential and may be privileged. It is intended only for the addressee(s) named above. If you receive this e-mail in error, please do not read, copy or disseminate it in any manner. If you are not the intended recipient, any disclosure, copying, distribution or use of the contents of this information is prohibited. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please erase it from your computer system. Your assistance in correcting this error is appreciated.




More information about the Snort-users mailing list