relay server

Is there a way to create a xymon relay service.. As example my xymon server
cannot reach the end point to perform tests (e.g http, dns, etc or
receiving local client data) but an intermediate device could do it.  Not
sure if this is something a client or server could do?

xymonserver(main) <> xymonserver(relay) <> xymonclient

thx in advance

Danny