Service Whitelisting
Kosy hosts most services on the following domains:
kosyoffice.com
*.kosyoffice.com
kosy.online
*.kosy.online
All of the communication is done using HTTPS or Secure Web Sockets over SSL on port 443.
As Kosy supplies several advanced services, full domain whitelisting may be interesting, as new ports may be required for new features in the future and there is no real security threat to this
Media Server Whitelisting.
Our media servers use static IP addresses rather than DNS-based queries. Kosy uses TCP as well as UDP. It is highly recommended to also allow UDP for media transport performance reasons.
We suggest opening of TCP 443, TCP and UDP port range 20.000 - 30.000 for the servers on our static IP list.
Our IP list:
54.78.81.136
54.73.70.82
54.228.247.12
54.171.40.191
54.171.168.91
52.31.183.123
52.18.175.213
18.202.185.234
Turn Server Whitelisting
Our TURN servers are used to support difficult connections and network discovery. They also use TCP as well as UDP.
Our IP list:
54.73.108.3
52.210.201.217
Ports:
3478 TCP & UDP
443 TCP
80 TCP
10000 - 20000 UDP