Phones on my network are being spam called by an IP address

FreePBX Networking
1

People on my phone network has been getting spam called by a local IP address and a number call “277277277277277277” in my freepbx system. Is there a way to stop this from happening? here are some screenshots.

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https://drive.google.com/file/d/1T-ysd0BAL54CBX2p2YznwxbLk7KWPGBi/view?usp=sharing)

2

Fix your firewall, they are scanning your network for open SIP ports and sending calls to it.

3

If you don’t listen for SIP on UDP:5060 they will likely go away.

4

you want me to enable the firewall?

5

You don’t have the firewall enabled on a publicly facing system?

6

i enabled firewall and now everyone outside my network has their phones not working