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Next:
The Basics
Up:
Snort
TM
Users Manual 2.6.1
Previous:
Directives
Contents
Writing Snort Rules:
How to Write Snort Rules and Keep Your Sanity
Subsections
The Basics
Rules Headers
Rule Actions
Protocols
IP Addresses
Port Numbers
The Direction Operator
Activate/Dynamic Rules
Rule Options
Meta-Data Rule Options
msg
Format
reference
Format
sid
Format
Example
rev
Format
Example
classtype
Format
Warnings
Priority
Format
Payload Detection Rule Options
content
Format
Example
Changing content behavior
nocase
Format
Example
rawbytes
format
Example
depth
Format
offset
Format
distance
Format
Example
within
Format
Examples
http_client_body
Format
Examples
http_uri
Format
Examples
uricontent
Format
isdataat
Format
Example
pcre
Format
Example
byte_test
Format
byte_jump
Format
ftpbounce
Format
Example
regex
content-list
Non-Payload Detection Rule Options
fragoffset
Format
ttl
Format
Example
tos
Format
Example
id
Format
Example
ipopts
Format
Example
Warning
fragbits
Format
Example
dsize
Format
Example
Warning
flags
Format
Example
flow
Options
Format
flowbits
Format
seq
Format
Example
ack
Format
Example
window
Format
Example
itype
Format
Example
icode
Format
Example
icmp_id
Format
Example
icmp_seq
Format
Example
rpc
Format
Example
Warning
ip_proto
Format
Example
sameip
Format
Example
Post-Detection Rule Options
logto
Format
session
Format
Example
Warnings
resp
Format
Warnings
Example
react
Format
Warnings
tag
Format
Example
Event Thresholding
Standalone Options
Standalone Format
Rule Keyword Format
Rule Keyword Format
Examples
Standalone Thresholds
Rule Thresholds
Global Thresholds
Event Suppression
Format
Examples
Snort Multi-Event Logging (Event Queue)
Event Queue Configuration Options
Event Queue Configuration Examples
Writing Good Rules
Content Matching
Catch the Vulnerability, Not the Exploit
Catch the Oddities of the Protocol in the Rule
Optimizing Rules
Testing Numerical Values
Steven Sturges 2007-05-11
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