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udp-echo-server(1) General Commands Manual udp-echo-server(1) NAME udp-echo-server -- Simple UDP Echo Server SYNOPSIS udp-echo-server [-L level | --loglevel level] [-Z | --logcolor on|off] [-O file | --logfile file] [-q | --quiet] [-v | --verbose] [-U user|uid | --user user|uid] [-A address | --address address] [-P port | --port port] [-f port | --from-port port] [-t port | --to-port port] DESCRIPTION udp-echo-server is a simple UDP Echo server. It can be used as endpoint for HiPerConTracer UDP Ping/Traceroute. Note, for security reasons, udp-echo-server only responds to source ports >= 1024, to avoid using the server in attacks, like spoofing a packet from another Echo server (port 7) to create a flooding loop. Also, packets from the same port as the listening port are ignored. ARGUMENTS The following arguments may be provided: -L level | --loglevel level Sets the minimum logging level to the provided value: 0=trace, 1=debug, 2=info, 3=warning, 4=error, 5=fatal. -q | --quiet Sets the minimum logging level to 3 (warning). -v | --verbose Sets the minimum logging level to 0 (trace). -Z on|off| --logcolor on|off Enables (on) or disables (off) the usage of ANSI color escape sequences to colorise the log output according to its level. -O file | --logfile file Sets a file name for appending the log output to. If a file is set, no log output is made to the console. Otherwise, all log output will be written to the console. -U user|uid | --user user|uid After startup, the server uses UID and GID of the given user (by name or GID). -A address | --address address Sets the local address (default: ::). -P port | --port port Sets the local port (default: 7). -P port | --from-port port Sets the first local port of a range (default: 7). -P port | --to-port port Sets the last local port of a range (default: 0; 0 uses the "from" port). EXAMPLES udp-echo-server udp-echo-server --address 192.168.1.1 --port 7777 udp-echo-server --address 3ffe::1:2:3 --port 7777 udp-echo-server --address :: --user nornetpp udp-echo-server --address 3ffe::1:2:3 --from-port 10000 --to-port 10999 AUTHORS Thomas Dreibholz https://www.nntb.no/~dreibh/hipercontracer mailto://dreibh@simula.no udp-echo-server December 19, 2024 udp-echo-server(1)
NAME | SYNOPSIS | DESCRIPTION | ARGUMENTS | EXAMPLES | AUTHORS
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