mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 10:39:04 +00:00
47 lines
1.8 KiB
Plaintext
47 lines
1.8 KiB
Plaintext
# FTP - File Transfer Protocol - RFC 959
|
|
# Pattern attributes: great notsofast fast
|
|
# Protocol groups: document_retrieval ietf_internet_standard
|
|
# Wiki: http://protocolinfo.org/wiki/FTP
|
|
# Copyright (C) 2008 Matthew Strait, Ethan Sommer; See ../LICENSE
|
|
#
|
|
# Usually runs on port 21. Note that the data stream is on a dynamically
|
|
# assigned port, which means that you will need the FTP connection
|
|
# tracking module in your kernel to usefully match FTP data transfers.
|
|
#
|
|
# This pattern is well tested.
|
|
#
|
|
# Handles the first two things a server should say:
|
|
#
|
|
# First, the server says it's ready by sending "220". Most servers say
|
|
# something after 220, even though they don't have to, and it usually
|
|
# includes the string "ftp" (l7-filter is case insensitive). This
|
|
# includes proftpd, vsftpd, wuftpd, warftpd, pureftpd, Bulletproof FTP
|
|
# Server, and whatever ftp.microsoft.com uses. Almost all servers use only
|
|
# ASCII printable characters between the "220" and the "FTP", but non-English
|
|
# ones might use others.
|
|
#
|
|
# The next thing the server sends is a 331. All the above servers also
|
|
# send something including "password" after this code. By default, we
|
|
# do not match on this because it takes another packet and is more work
|
|
# for regexec.
|
|
|
|
ftp
|
|
# by default, we allow only ASCII
|
|
^220[\x09-\x0d -~]*ftp
|
|
|
|
# This covers UTF-8 as well
|
|
#^220[\x09-\x0d -~\x80-\xfd]*ftp
|
|
|
|
# This allows any characters and is about 4x faster than either of the above
|
|
# (which are about the same as each other)
|
|
#^220.*ftp
|
|
|
|
# This is much slower
|
|
#^220[\x09-\x0d -~]*ftp|331[\x09-\x0d -~]*password
|
|
|
|
# This pattern is more precise, but takes longer to match. (3 packets vs. 1)
|
|
#^220[\x09-\x0d -~]*\x0d\x0aUSER[\x09-\x0d -~]*\x0d\x0a331
|
|
|
|
# same as above, but slightly less precise and only takes 2 packets.
|
|
#^220[\x09-\x0d -~]*\x0d\x0aUSER[\x09-\x0d -~]*\x0d\x0a
|