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Property:DNS

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Protocol

Details

DNS is a distributed lookup system to map a host name to one or more IP addresses.
It is one of the most important services in the net and uses Port-53-udp and Port-53-tcp.

All services which access a remote machine by hostname rely on DNS (introduced 1983, extended 1987).
This renders DNS to one of the biggest security risks in internet usage, that's why the security extensions
TSIG, DNSSEC, DoT, DoH and DoQ were added later.

FRITZ!OS

In FRITZ!OS DNS is served to the LAN by multid (routers) or rextd (repeaters) which act as a DNS proxy, adding local
hostnames like fritz.box and the hostname in CONFIG_HOSTNAME plus all hosts in the LAN as subdomains of these.

Since VoIP can have a separate PVC or VLAN with own DNS servers voipd additionally serves Port-7077-udp to the LAN.
This is used by IP-Clients and Mesh-Repeaters in the LAN to reach the VoIP DNS servers.

Further services to lookup hosts in FRITZ!OS are mDNS, LLMNR, NetBIOS and SSDP.

SMW-Browser

Information is currently being retrieved from the backend.
 

Synonyms

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