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Diffstat (limited to 'package/iptables/files/l7/ftp.pat')
| -rw-r--r-- | package/iptables/files/l7/ftp.pat | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/package/iptables/files/l7/ftp.pat b/package/iptables/files/l7/ftp.pat new file mode 100644 index 000000000..9593ffd1b --- /dev/null +++ b/package/iptables/files/l7/ftp.pat @@ -0,0 +1,34 @@ +# FTP - File Transfer Protocol - RFC 959 +# Pattern quality: great fast +# +# 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. If it does not +# work for you, or you believe it could be improved, please post to +# l7-filter-developers@lists.sf.net . This list may be subscribed to at +# http://lists.sourceforge.net/lists/listinfo/l7-filter-developers +# +# Matches the first two things a server should say. 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. Just in case, the next +# thing the server sends is a 331. All the above servers also send +# something including "password" after this code. +ftp +# actually, let's just do the first for now, it's faster +^220[\x09-\x0d -~]*ftp + +# This is ~10x faster if the stream starts with "220" +#^220.*ftp + +# This will match more, but 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 |