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When I try to connect a host to my proftpd server ( 1.2.5.0)this one send four SYN TCP messages from port 1545 to port 113 before send the ftp response.
So the connection need about 30 seconds to be established and that is to long for my application
What must I do to have an immediat response from the proftpd server
Set "IdentLookups no" in your /etc/proftpd.conf file to disable the identd lookups. This will make the server respond immidiately. Also, if you're still having problems with delays when logging in, use "UseReverseDNS no" to further limit the time consuming lookups.
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proftpd slow connection
