This article provides information about the
firewall rules needed for Microsoft ActiveSync. It also gives instructions on
how to configure the firewall to allow Microsoft ActiveSync.
Microsoft ActiveSync uses the following applications for the
To configure the firewall, go to the
Application Control settings and allow the above
applications to act as a client and a server to allow connections between your
computer and the mobile device.
Microsoft ActiveSync uses the following ports for the communication:
Make sure that these ports are not blocked before the dynamic
Application Control rules in your firewall rule list. ActiveSync creates a
private personal area network 169.254.2.0/24 for the device and the virtual
network adapter so you can limit open connections to this range.
Note: The connection might not work if the active firewall ruleset
specifically denies something that ActiveSync needs. For example, the incoming
TCP and UDP traffic is denied separately in home and mobile profiles before
Application Control rules.