rinetd
TCP Redirection Server
rinetd redirects TCP connections from one IP address and port to another address and port. rinetd is a single-process server which handles any number of connections to the address or port pairs specified in the file /etc/rinetd.conf. Because rinetd runs as a single process using nonblocking I/O, it is able to redirect a large number of connections without a severe impact on the machine. This makes it practical to run TCP services on machines inside an IP masquerading firewall. Note: rinetd can not redirect FTP because FTP requires more than one socket.
There is no official package available for openSUSE Leap 15.6Дистрибуции
openSUSE Tumbleweed
openSUSE Leap 15.6
openSUSE Leap 15.5
openSUSE Backports for SLE 15 SP4
openSUSE Backports for SLE 15 SP3
SUSE SLE-15-SP1
SUSE SLE-11 SP 4