Network (SSH, Uplink, and Remote Access Connections)

• Improved event.log entries: added more information, especially regarding login
  events and opening/closing connections, and reduced the number of events;
  fixed cases where the end of a session was not always logged
• Lowered timeout of SSH connections from 10 minutes to 1 minute for technical
  reasons; Note that this also affects interactive SSH sessions
• Set an explicit limit of three login attempts per connection (currently hardcoded)

Library Changes

• Upgraded OSHI to version 4.9.5, fixing a memory leak in long-running RCE instances
• Removed the obsolete dom4j 1.x library

Documentation

• Rewrote section on installation in user guide to better explain
  signature handling

Other

• Extended validity of RCE signing key (unchanged fingerprint: 0xBA880CB39DC1CE34,
  new expiration date: December 2, 2022)
• Reinstated commands keytool and sysmon, which were unavailable in 10.2.0
  by accident
• Minor bugfixes