Followed the installation guide from the Docs section (Snort, Apache,
SSL, PHP, MySQL, and BASE Install on CentOS 4, RHEL 4 or Fedora Core),
with the exception that I installed the official Snort 2.4.4 RHEL4 rpms
(snort + snort-mysql).
Snort seems to start OK (no errors given anywhere, and syslog shows a
good startup), but no sensors are listed in BASE - nada.
Running snort -c /etc/snort/snort.conf gives the following output:
***
*** interface device lookup found: eth0
***
Running in IDS mode
Initializing Network Interface eth0
--== Initializing Snort ==--
Initializing Output Plugins!
Decoding Ethernet on interface eth0
Initializing Preprocessors!
Initializing Plug-ins!
Parsing Rules file /etc/snort/snort.conf
+++++++++++++++++++++++++++++++++++++++++++++++++++
Initializing rule chains...
ERROR: Undefined variable name: (/etc/snort/snort.conf:33): ppp0_ADDRESS
Fatal Error, Quitting..
My snort.conf file defines HOME_NET as $ppp0_ADDRESS. I have modified
/etc/sysconfig/snort so that the INTERFACE variable points to ppp0, and
also the /etc/rc.d/init.d/snortd script.
As far as I can tell, snort should be getting called with the -i ppp0
option, but it is still trying to listen on the eth0 interface.
My network setup is a DSL modem connected to eth1, with eth0 being the
interface to the private LAN. Yes, the IP address from my ISP is
dynamic, not fixed.
If more information is required, please let me know. Appreciate any
suggestions as to getting this to work.
Regards,
John
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