In computer networking, a firewall pinhole is a port that is not protected by a firewall to allow a particular application to gain access to a service on a host in the network protected by the firewall. Leaving ports open in firewall configurations exposes the protected system to potentially malicious abuse.
In computer networking, a firewall pinhole is a port that is not protected by a firewall to allow a particular application to gain access to a service on a host in the network protected by the firewall. Leaving ports open in firewall configurations exposes the protected system to potentially malicious abuse.
Source: Wikipedia "Firewall pinhole" · CC BY-SA 4.0
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