Blocked ports UDP: 17, 111, 389, 520, 1900, 3702, 11211.
Blocked ports TCP/UDP by default (for dedicated subnets can be unlocked by the Customers request): 135, 137, 138, 139, 445.
For Public Shared Subnets of Dedicated Servers, UDP ports are additionally blocked: 0, 19, 53, 123, 161, 520, 1900.