|Configure update servers / Location roaming for laptops|
Location roaming is a method of intelligent updating for roaming laptops where updates are performed from a ''best'' update location and updating does not rely solely on the primary and secondary update locations specified in the laptops' updating policy.
When location roaming is enabled, the following happens:
All Endpoint Security and Control installations listen for broadcasts regardless of whether location roaming is enabled or not.
Sensitive information in replies is obfuscated and fields are hashed for integrity.
Reply messages have a randomized reply time, to avoid message storms. The replies are also ICMP broadcasts, so any other machine that would have replied with the same details will also receive the broadcast and know not to respond.
The "best" update location is determined based on the amount of hops required to access the update location.
A maximum of four accessible update locations with the same subscription ID and the lowest hop count are stored on the laptop (in the file iustatus.xml in the following location: C:\Program Files\Sophos\AutoUpdate\data\status\iustatus.xml).
These update locations are checked every time AutoUpdate performs an update.