I am unable to connect to an Oracle database which is on my machine using SQL* Plus while connected to my company network. I get the error (TNS-12535: TNSperation timed out). But when I remove the network cable, I am able to connect to the same Oracle database. I am also successfully able to TNSPING the Oracle database server with the network cable connected. I am not sure what network security settings need to be modified, if any.

Any help is highly appreciated.