Ingress

Ingress may refer to:

Science and technology

Ingress (signal leakage), the passage of an outside signal into a coaxial cable
Ingress filtering, a computer network packet filtering technique
Ingress protection rating, a protection level that electrical appliances provide against intrusion of physical objects
Ingress router, a source label switch router
Ingress cancellation, a technology to digitally remove in-channel ingress