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