The Etherlite supports serial over IP using RealPort. Has a limited UI using rlogin for debugging. IP configuration using bootp. Much older product.
The ConnectPortTS supports serial over IP using RealPort, encrypted RealPort, TCP/SSL socket, UDP, autoconnect (connection initiated by serial), ppp, modem emulation, etc. Has WebUI, CLI, SSL/TLS security, DHCP, python support for running programs, etc.