Deleted FTP signatures

[Yanyan Yang <toyyyang () yahoo com>]

Hello, 
 
I noticed that there were a few FTP rules that got deleted since Snort 1.9.0. The reason for that was:
 
# The following ftp rules look for specific exploits, which are not needed now
# that initial protocol decoding is available.
 
I'd greatly appreciate it if anyone could give me some hints on what "initial protocol decoding" can handle those 
deleted FTP rules.
 
Best regards,
Yanyan.


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