Restricted Ports

List of blacklisted ports/services on our cloud services network.

We reserve the right to add/remove ports to this list without warning as we come across new knowledge.

Port	Direction	Service
23	Both	Telnet
25	Out	SMTP
135, 137-139, 445	Both	MS SMB/Net-BIOS
19, 69, 123, 161-162, 1900, 11211	In	Commonly abused services for DDoS attacks