If you are experiencing a long delay from the time your FTP client connects to your FTP site and when the user prompt appears (or in the case of automated connections, a long hang before the directory listings appear), you may be having a case of Ident [time] Theft.
ProFTPd
To resolve this edit your FTP server’s config file and turn off Ident Lookups.
Open your proftpd.conf (/etc/proftpd.conf - may vary) file in your favorite text editor and look for IdentLookups and replace it with the following:
# Do not perform ident IdentLookups off
If you are a reseller (or run multiple vhosts through ProFTPd) you can set this in each of the virtual hosts config or make it global like so:
<global>
# Do not perform ident IdentLookups off
</global>
IPTables
You can also filter out the requests through iptables using the following:
iptables -A OUTPUT -p tcp --dport 113 -m state --state NEW -j REJECT --reject-with tcp-reset
Hope this helps!
This entry was posted
by Bret Mette
on Thursday, February 21st, 2008 at 1:48 am and is filed under Linux.
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August 22nd, 2008 at 12:22 am
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