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How do I keep my server alive?
The HTTP keep-alive header maintains a connection between a client and your server, reducing the time needed to serve files. A persistent connection also reduces the number of TCP and SSL/TLS connection requests, leading to a drop in round trip time (RTT).
How do you stop PuTTY from timing out?
If you find that the PuTTY window closes itself after a few minutes of inactivity, there is a setting change you can make to prevent this. When PuTTY starts, click on ‘Connection’ on the left hand side, then change the entry ‘Seconds between keepalives (0 to turn off) from the default of 0 to 5.
Why PuTTY gets disconnected frequently?
This can cause PuTTY sessions to be unexpectedly closed by the firewall if no traffic is seen in the session for some time, which will trigger the error: “Network Error: Software Caused Connection Abort”. To solve this issue, you can configure PuTTY to send null packets and TCP keepalives every few seconds.
What does clientaliveinterval do in SSHD ( 8 )?
ClientAliveInterval Sets a timeout interval in seconds after which if no data has been received from the client, sshd(8) 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.
What happens when client alive messages are sent in SSHD?
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 TCPKeepAlive (below).
How to setup session idle timeout ( inactivity timeout )?
1.Configure the timeout value in the /etc/ssh/sshd_config file with below parameter values. 2. Restart the ssh service after setting the values. This would make the session timeout in 10 minutes as the ClientAliveCountMax value is multiplied by the ClientAliveInterval value.
Is the TCP Keepalive option enabled by tcpkeepalive?
The TCP keepalive option enabled by TCPKeepAlive is spoofable. The client alive mechanism is valuable when the client or server depend on knowing when a connection has become inactive. The default value is 3.