[KLUG Members] ssh
Daniel
members@kalamazoolinux.org
Tue, 27 Aug 2002 18:31:23 -0400
Probably a setting in sshd_config:
man sshd_config - here is an excerpt:
ClientAliveInterval
Sets a timeout interval in seconds after which if no data has
been received from the client, sshd will send a message through
the encrypted channel to request a response from the client. The
default is 0, indicating that these messages will not be sent to
the client. This option applies to protocol version 2 only.
ClientAliveCountMax
Sets the number of client alive messages (see above) which may be
sent without sshd receiving any messages back from the client. If
this threshold is reached while client alive messages are being
sent, sshd will disconnect the client, terminating the session.
It is important to note that the use of client alive messages is
very different from KeepAlive (below). The client alive messages
are sent through the encrypted channel and therefore will not be
spoofable. The TCP keepalive option enabled by KeepAlive is
spoofable. The client alive mechanism is valuable when the client
or server depend on knowing when a connection has become inac-
tive.
The default value is 3. If ClientAliveInterval (above) is set to
15, and ClientAliveCountMax is left at the default, unresponsive
ssh clients will be disconnected after approximately 45 seconds.
John Pesce extolled:
> I'm running RH 7.3 on two systems, on which I have openssh.
> If I ssh to the other machine, after a while of not typing anything I get
> disconnected with the following message despite the fact that I was not
> typing because I was in the middle of comparing to very large files.
> This happens all the time. It seems to be some kind of auto disconnect I
> guess. I can't tell if it is on the ssh side or the sshd side. I don't get
> disconnected if I telnet across.
>
> Disconnected; connection lost (Connection closed.).
> Connection to obelix closed.
> Exit 1
>
>
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> Members mailing list
> Members@kalamazoolinux.org
>
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| Daniel |
| drk@netophilia.net |
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