Glossary
Firewall

Firewall

Firewall is a security system that monitors and controls incoming and outgoing network traffic, used to protect payment systems and sensitive financial data from unauthorised access.

GLOSSARY
What is a
Firewall

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Zero-Rating

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Zero-Auth (Zero-Amount Authorisation)

An authorisation request for a value of £0 used to validate a card before charging it. It confirms card validity without reserving funds.
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