There are many things that control a connection for Anzio Lite and AnzioWin. This includes network devices, the host application, the host operating system, user login scripts, Microsoft Windows settings and more.
Telnet and Secure Shell (SSH) connections are stateful connections and must be up and available whenever a character of any type is passed either direction. If not, the user's connection can be dropped and thus, depending on the settings in Anzio, the Anzio window may close. This type of failure usually indicates some network or server action timed out, or the network connection was not available.
This is different than how the FTP (file transfer) or HTTP (web browser) protocol behaves, these protocols simply try to reconnect since no login is necessary.
These type of dropped connections are most often seen when connecting over the Internet through an ISP (Internet Service Provider). They can also occur when a hub, router or network switch is not properly configured or when one of these devices is beginning to fail (generating errors). There are some options a user can do to try to get around the issues:
- Contact your ISP and let them know you are doing telnet or secure shell connections and the connections are dropping (if you get the right tech person, he/she will know what is miss-set in your connection to them).
- Check your devices in-house and see if one of them is getting errors in their log file. If they are unmanaged devices, switch ports and see if the problem moves.
- Make sure the host system is not timing out. There should not be a "tmout" or "tout" inside your host script files (.profile or login scripts). Also make sure the host and PC network cards are not generating any network errors.
- Try setting the "Stay Alive" parameter (available in version 15 or later). Check under the Communications menu and Network : Stay Alive. This option, when set greater than zero, will send a single empty packet over the network stating that Anzio is still alive and working (typically set this for 30 seconds). However, setting this option too low may only show the problem earlier and more often and not really hide it. Again this option is masking some other problem or misconfiguration, but it will help in about 80% of the cases.
Check out the following pages for more information: