For customer service agents using the giosg console
- https traffic to and from service.giosg.com (ip 176.9.141.35 and 5.9.235.235)
- websocket and xhr traffic to and from messagerouter.giosg.com (ip 5.9.225.163)
If your company is using custom integrations, then you need to allow incoming traffic to your integration from 176.9.141.35