pfSense

# HTTP - HyperText Transfer Protocol - RFC 2616

# Pattern attributes: great slow notsofast superset

# Protocol groups: document_retrieval ietf_draft_standard

# Wiki: http://protocolinfo.org/wiki/HTTP

# Usually runs on port 80

#

# This pattern has been tested and is believed to work well.

#

# this intentionally catches the response from the server rather than

# the request so that other protocols which use http (like kazaa) can be

# caught based on specific http requests regardless of the ordering of

# filters... also matches posts

# Sites that serve really long cookies may break this by pushing the

# server response too far away from the beginning of the connection. To

# fix this, increase the kernel's data buffer length.

http

# Status-Line = HTTP-Version SP Status-Code SP Reason-Phrase CRLF (rfc 2616)

# As specified in rfc 2616 a status code is preceeded and followed by a

# space. 

http/(0\.9|1\.0|1\.1) [1-5][0-9][0-9] [\x09-\x0d -~]*(connection:|content-type:|content-length:|date:)|post [\x09-\x0d -~]* http/[01]\.[019]

# A slightly faster version that might be good enough:

#http/(0\.9|1\.0|1\.1) [1-5][0-9][0-9]|post [\x09-\x0d -~]* http/[01]\.[019]

# old pattern(s):

#(http[\x09-\x0d -~]*(200 ok|302 |304 )[\x09-\x0d -~]*(connection:|content-type:|content-length:))|^(post [\x09-\x0d -~]* http/)