In computer networks design documentation icons for network components such as a switch, a router, a firewal, a load balancer are very commonly used.

I was not able to find any in your repository (btw, can you please, improve the search to be able to filter on more than just one word? E.g. a switch can mean an ethernet swtich or a light switch. I'd like to be able to add clarifying filerting to my queries when searching).

I am attaching a screenshot of other icons. In this screenshot it is literally the way switches and routers are depicted in the vast majority of cases in computer documentation. Also the firewall is there. The load balancer is not shown, but you can google it. Switch and router are the two most important ones.