Network locks

Last update: May 28 2025

Network locks

Traffic from some ports may be temporarily blocked to protect against malicious network activity. Blocking is imposed if:

• there's a lot of spam emails coming from the address;
• there have been complaints about the address;
• address has been detected in DNSBL spam lists;
• address blocked on demand Roskomnadzor.

You can view such locks in the control panel.

Also, some TCP/UDP ports are blocked by default.

View network locks⁠

1. In the Control panel, on the top menu, click Products and select Network Incidents.

2. Open the Network Blocking tab. For each blocking, you specify the socket and protocol, the blocking period, and the traffic action that falls under the blocking conditions:

   • accept — traffic is redirected to an additional scrubbing system;
   • discard — traffic is blocked completely;
   • rate limit — traffic is rate-limited to a specified rate (bytes per second).

To find out the reason for the blocking and possible actions to remove it, create a ticket.

If the address does not appear in blockers, but traffic is limited⁠

1. Make sure:

   • that the port is not blocked by default;
   • that the address is not blocked due to a DDoS attack.

2. If there are no blockers on the address, but traffic is blocked or restricted, create a ticket.