DNS Server

Name

DNS-SRV -- Domain Name Server.

Description

XRPi includes a basic DNS (Domain Name System) server, which can answer DNS queries from other systems via the standard UDP port 53.

This is a legacy from DOS XRouter, and is unlikely to be of much practical use on the LAN port, since Linux can perform the same function.

However, it may be of use via the RF and SLIP / PPP ports.

The server only answers one query per message. Only standard queries for type A are currently answered. Recursion is supported. Other query types may be supported in a later version, if anyone requests that functionality.

The server can act as a DNS proxy, allowing XRPi to function as an Internet Connection Sharing router for a network of clients. The clients on the local "intranet" send their DNS queries to XRPi, which either resolves them using its own DNS lookup (DOMAIN.SYS), or queries an external DNS on their behalf if necessary.

The "intranet" mentioned above could be hosts linked via SLIP, PPP or even an IP-over-ham-radio LAN.

See also

DOMAIN.SYS(8) -- Domain Resolution File.