Re: Slow FTP transfers

sky wrote:

Hi,

I'm having an issue when ftp'ing (default port mode) large file (50megs)
to a remote server sitting behind FWSM. The transfer gets real slow and
at times just timeouts.

Now when I change ftp mode to passive the same file transfer works w/o
any issues. Why?

Have inspect ftp and mtu is set for 1500. I've checked for duplex
settings as well which is good.

Any thoughts will be great.

regards
sky

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debug the inspect?

are you doing nat between device or just acl and inspect?

when you say slow, are you sure its not just dropping the data transfer
and it "appears" as a slowdown on the client side? I have seen that
with some ftp clients, they do an average transfer rate over x amount
of time and so it appears as slowdown when in reality its actually a
dropped stream.

the ftp client you use, does it have a debug mode? i think the standard
windows and standard *nix ftp clients have a debug mode. you might look
into that for some clues,

You say it gets slow and timesout "at times" does that mean this
problem is somewhat random and not fully reproducable? when does the
slowdown start? how long before it times out?

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