# port knocking

> sending a specific sequence of requests to closed ports to open a port on a firewall

**Wikidata**: [Q649608](https://www.wikidata.org/wiki/Q649608)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Port_knocking)  
**Source**: https://4ort.xyz/entity/port-knocking


## References

1. Freebase Data Dumps. 2013
2. Quora