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==Introduction==

==Introduction==

This article contains step-by-step instructions on how to set up bidirectional communication between two serial RS 232 devices over TCP/IP.

This article contains step-by-step instructions on how to set up bidirectional communication between two serial RS232 devices over TCP/IP.

==Prerequisites==

==Prerequisites==

End devices are connected to separate RUT955 routers through RS232 connection, and routers communicate to each other through ISP with Public IPs.

End devices are connected to separate RUT955 routers through RS232 connection, and routers communicate to each other through ISP with Public IPs.

[[File:Networking_rut955_configuration_example_bidirectional_serial_comunication_over_tcp_topology.png|border|class=tlt-border]]

[[File:Networking_rut955_configuration_example_bidirectional_serial_comunication_over_tcp_topology.png|700px|border|class=tlt-border]]

==RUT955 configurations==

==RUT955 configurations==

When configuring routers in a way that devices connected through serial port, in this example two computers using RS232, could communicate with each other, acting as both, Master and Slave, you only need to configure section in Services > RS232/RS485 > RS232 section, configuration on both devices is almost identical except Client and Server part, where they are reversed.

To achieve communication between your devices, which are connected to routers through serial port, apply this configuration. In this example RS232 will act as both, Master and Slave. Configuration on both devices is almost identical except '''Client''' and '''Server''' part, where they are reversed. In order to find these settings in routers WebUI go to '''Services > RS232/RS485 > RS232'''

[[File:Networking_rut955_configuration_example_bidirectional_serial_comunication_over_tcp_rut_configuration.png|border|class=tlt-border|1100x1100px]]

[[File:Configuration1-2.png|thumb]border|class=tlt-border|1100x1100px]]

#'''Enable''' Serial port

#'''Enable''' Serial port

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After finishing serial port configuration add interfaces through which routers will be communicating, You can add IP address that will be allowed to connect or enter 0.0.0.0/0 to allow all connections coming through correct port.

After finishing serial port configuration add interfaces through which routers will be communicating, You can add IP address that will be allowed to connect or enter 0.0.0.0 to allow all connections coming through correct port.

[[File:Networking_rut955_configuration_example_bidirectional_serial_comunication_over_tcp_allow.png|border|class=tlt-border]]

[[File:Ipfilter.jpg]]

==Testing configuration==

==Testing configuration==