Binary package “privbind” in ubuntu jammy
Allow unprivileged apps to bind to a privileged port
Privbind is a utility that allows running non-root applications, only giving
them one root privilege - binding to low (<1024) ports. The aim is similar,
though using a completely different method, to "authbind".
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Privbind is a completely user space solution. It has no SUID executables, and
has to be started by a root user instead.
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Privbind is useful for cases where there is a need to run an untrusted program
that needs to bind to a low port, but requires no other root privilege. It is
also useful if a daemon has no capability to drop privileges itself.