Yes Wowza can accept a UDP source. You can see examples in
this article. Essentially you create a stream file with a udp listener, which is constructed of an IP address (or all interfaces if set to udp://0.0.0.0) and a listener port.
Wowza can restream this in
various protocols. Note that the source needs to be H.264 in order to be playable, or if mpeg-ts then it can be transcoded to an H.264 output.