troubleshooting Question

Can php control access to a port?

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PHPShell Scripting
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I've been searching but can't seem to find anything on this.
Can php directly control a tcp port and allow/deny access to it?

Basically, the idea is to have a php function which allows only curl authenticated connections to run a test against the iperf service on the server.

I guess I could allow the client by having php allow it's IP for the connection to the port using iptables but I am hoping there might be a simpler way where php could control access to the port or the service based on the client being authenticated.
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