DirectAccess – Installation – Configuration in Windows Server 2016/2019

Windows Server 2012R2 Windows Server 2016 Windows Server 2019

Ports and protocols used by DirectAccess

Here is the list of ports and protocol to open on a firewall to authorize Direct Access

Access in IPv4 :

  • TCP 443: for clients using IP-HTTPS which allows the encapsulation of IPv6 packets.
  • UDP 3544: for customers use Teredo technology.
  • IP 41 protocol: for customers using 6to4 technology.
  • TCP 62000: If the network location server is on the DirectAccess server itself and the DirectAccess server has only one network adapter.

Access in IPv6 :

  • IP 50 protocol
  • UDP 500