What outbound port must be opened for MID Server communication with ServiceNow?

For the communication between the MID Server and ServiceNow, port 443 must be opened. This port is used for HTTPS traffic, which is essential for secure communication over the internet. The MID Server operates by establishing a secure connection with ServiceNow to send and receive data, and HTTPS traffic on port 443 ensures that this data is encrypted and secure as it travels between the two.

Port 80, typically associated with HTTP traffic, is not suitable for secure data exchanges as it does not provide the same level of security as HTTPS. Port 22 is used for SSH, which is relevant for secure shell access but not for the specific communication needs of the MID Server with ServiceNow. Port 8080, while commonly used as an alternative for HTTP traffic, does not provide the secure transmission required for communicating with ServiceNow. Therefore, port 443 is essential for maintaining a secure and reliable connection, making it the correct choice for the MID Server's communication requirements.