× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.




2) Could the DOS attacks be slowing down the SFTP handshake process, thus not allowing it to complete in its required time interval X, whatever X is?
X is the login grace time that's set in the server's sshd config. The default is 120 seconds. The login process should be sub second. 40 failures in 60 days is extraordinarily high.


On 1/20/2016 6:45 AM, Steinmetz, Paul wrote:
I have an SFTP client Expect 5.43 via PASE intermittently failing.
This process runs every 15 minutes, 6 am to 9 pm, Sun thru Sat, so about 60 times per day.
40 failures since 11/20, when this converted from an FTP to SFTP.

When it fails, I get this error message.

ssh_exchange_identification: read: Connection reset by peer
Connection closed

The remote side has not found any issues on their side.
We haven't found any issues on our side.

What was discovered that at the same time of some of the failures, our ISP was having DOS attacks.

My question is two-fold.
1) During the initial SFTP handshake process, how long does this normally take?
2) Could the DOS attacks be slowing down the SFTP handshake process, thus not allowing it to complete in its required time interval X, whatever X is?

Thank You
_____
Paul Steinmetz
IBM i Systems Administrator

Pencor Services, Inc.
462 Delaware Ave
Palmerton Pa 18071

610-826-9117 work
610-826-9188 fax
610-349-0913 cell
610-377-6012 home

psteinmetz@xxxxxxxxxx
http://www.pencor.com/




As an Amazon Associate we earn from qualifying purchases.

This thread ...

Follow-Ups:
Replies:

Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.