Re: Multiple NICs in a Linux box and Snort

[Lyndon Tiu <ltiu () alumni sfu ca>]

It can monitor multiple NICs.



> From snort.conf:



# Step #1: Set the network variables:

#

# You must change the following variables to reflect your local network. The

# variable is currently setup for an RFC 1918 address space.

#

# You can specify it explicitly as: 

#

# var HOME_NET 10.1.1.0/24

#

# or use global variable $<interfacename>_ADDRESS which will be always

# initialized to IP address and netmask of the network interface which you run

# snort at.  Under Windows, this must be specified as

# $(<interfacename>_ADDRESS), such as:

# $(\Device\Packet_{12345678-90AB-CDEF-1234567890AB}_ADDRESS)

#

# var HOME_NET $eth1_ADDRESS

#

# You can specify lists of IP addresses for HOME_NET

# by separating the IPs with commas like this:

#

# var HOME_NET [10.1.1.0/24,192.168.1.0/24]

#

# MAKE SURE YOU DON'T PLACE ANY SPACES IN YOUR LIST!

#

# or you can specify the variable to be any IP address

# like this:

var HOME_NET any



# Set up the external network addresses as well.  A good start may be "any"

var EXTERNAL_NET any





--

Lyndon Tiu


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