TurabG
Free User
- Joined
- Jun 12, 2018
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Hi.
I have seen some advices to use whitelisting over blackisting which I agree. What I wonder is; do we need to allow only VoIP provider IPs for port 5060? It's said that softphones use port 5090 to communicate with 3CX. Then why would strange IPs are trying to register on port 5060?
I mean if I whitelist my VoIP provider's IPs on port 5060 and block everything else, will softphones still work while they are out of the LAN connection?
I have seen some advices to use whitelisting over blackisting which I agree. What I wonder is; do we need to allow only VoIP provider IPs for port 5060? It's said that softphones use port 5090 to communicate with 3CX. Then why would strange IPs are trying to register on port 5060?
I mean if I whitelist my VoIP provider's IPs on port 5060 and block everything else, will softphones still work while they are out of the LAN connection?