RE: NOOP command SMTP error
- From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Sun, 19 Dec 2004 08:46:56 -0800
The SMTP protocol also has NOOP commands.
It's highly unlikely that your FTP actions are the cause of this, but if
you want to be absolutely sure, compare the firewall log times with the
event log time.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
-----Original Message-----
From: Darryl Janetzki [mailto:darrylj@xxxxxxxxxxxxxxxx]
Sent: Sunday, December 19, 2004 5:11 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] NOOP command SMTP error
http://www.ISAserver.org
I have observed "NOOP" errors with SMTP alerts with ISA 2000. I have
posted this error with before without anyone responding. Today I was
downloading data using "SmartFTP"
The following was observed:
227 Entering Passive Mode (195,116,91,206,185,203)
Opening data connection IP: 195,116,91,206,185,203 PORT: 47563.
RETR blacklists2004.981_axp.zip
125 Data connection already open; Transfer starting.
2245682 bytes received successfully. (5.18 KB/s) (00:07:03).
226 Transfer complete.
NOOP
200 NOOP command successful.
NOOP
Is it possible that port 25 is subject to FTP attack? Thus causing these
the errors?
Thanks for any response
Darryl Janetzki
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