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
Last updated