DNAT
A NAT translation that changes the destination address of an incoming packet.
View definitionIT Dictionary
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101matching definitions · 1,058 in the dictionary
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DNS
Understand how DNS translates domain names into IP addresses, which records it uses, how caching works and the most common DNS issues.
View definitionDNS over HTTPS (DoH)
DNS over HTTPS (DoH) carries DNS queries between a client and its configured resolver over an encrypted HTTPS connection.
View definitionDNS over TLS (DoT)
DNS over TLS (DoT) encrypts DNS exchanges between a client and its resolver using a TLS connection, normally on TCP port 853.
View definitionDNS64
A DNS service that synthesizes AAAA answers from A records for use with NAT64.
View definitionDNSSEC
A mechanism that allows the authenticity of certain answers to be verified cryptographically DNS.
View definitionEAP-TLS
An 802.1X method using client and server certificates for mutual authentication.
View definitionEVPN
A BGP control plane commonly used with VXLAN to distribute MAC and IP reachability.
View definitionFirst Hop Redundancy Protocol (FHRP)
First-hop redundancy protocols provide a shared virtual default gateway across routers to preserve connectivity during a failure.
View definitionFloating Static Route
A floating static route has a higher administrative distance than the preferred route and becomes active when the primary route disappears.
View definitionGLBP
Cisco Gateway Load Balancing Protocol provides a virtual default gateway and can distribute client traffic across multiple routers.
View definitionGRE Tunnel
A GRE tunnel encapsulates network packets inside IP to carry traffic between endpoints; GRE does not provide encryption on its own.
View definitionHairpin NAT
Hairpin NAT allows internal clients to reach an internal service through its public address using appropriate address translation.
View definitionHSRP
A red-Dandon bridge protocol
View definitionICMP
A control protocol used in particular by ping and to report certain network errors.
View definitionIP Address
a logical address that identifies an interface or equipment on a network using IP protocol
View definitionIP-in-IP
IP-in-IP encapsulates one IP packet inside another to create a network tunnel without providing encryption by itself.
View definitionIS-IS
IS-IS is a link-state routing protocol used especially in service provider networks to calculate paths within a routing domain.
View definitionL2TP
Layer 2 Tunneling Protocol transports Layer 2 sessions across IP networks and is often combined with IPsec when encryption is needed.
View definitionLACP
A protocol that combines several Ethernet links into a logical link.
View definitionLAN
Local network connecting the equipment of a home, office or site.
View definitionLLDP
A protocol allowing neighbouring network equipment to announce itself between them.
View definitionLLMNR
Link-Local Multicast Name Resolution resolves names on a local network segment without DNS but can expose systems to spoofing attacks.
View definitionLoad Balancer
A component that distributes requests across multiple servers or instances.
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