# Driver Modbus TCP/IP Server

**URL:** <https://community.factoryio.com/t/driver-modbus-tcp-ip-server/262>\
**Category:** Support\
**Created:** [May 28, 2020, 6:35pm UTC](https://community.factoryio.com/t/driver-modbus-tcp-ip-server/262 "2020-05-28T18:35:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![broogreg](https://avatars.discourse-cdn.com/v4/letter/b/c57346/32.png) [@broogreg](https://community.factoryio.com/u/broogreg)\
**Post date:** [May 28, 2020, 6:35pm UTC](https://community.factoryio.com/t/driver-modbus-tcp-ip-server/262/1 "2020-05-28T18:35:50Z")

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Running Modbus TCP/IP Server on FIO I am unable to connect to FIO over the network from another computer.

If I use another vendor’s Modbus TCP/IP Server I am able to connect over the network from another computer.

Any ideas?

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**Author:** ![user55](https://avatars.discourse-cdn.com/v4/letter/u/e47774/32.png) [@user55](https://community.factoryio.com/u/user55)\
**Post date:** [March 7, 2022, 10:46am UTC](https://community.factoryio.com/t/driver-modbus-tcp-ip-server/262/2 "2022-03-07T10:46:09Z")

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Hi

I have exactly the same problem …

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**Author:** ![goncalo](https://avatars.discourse-cdn.com/v4/letter/g/3be4f8/32.png) [@goncalo](https://community.factoryio.com/u/goncalo)\
**Post date:** [March 8, 2022, 10:31am UTC](https://community.factoryio.com/t/driver-modbus-tcp-ip-server/262/3 "2022-03-08T10:31:04Z")

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Please make sure that inbound TCP connections at port 502 (the default Modbus server port) are allowed for Factory IO by any firewall running on the computer.  
For Windows Firewall, [here is a similar guide](https://docs.microsoft.com/en-us/sql/reporting-services/report-server/configure-a-firewall-for-report-server-access?view=sql-server-ver15#opening-ports-in-windows-firewall) on how to do it.