[erlang-questions] Remote "access" points

Ulf Wiger <>
Wed Nov 18 15:18:58 CET 2009


Calum wrote:
> 
> Someone mentioned something called rex - but I didn't understand what
> part that played.

That's the registered name of the rpc server.
It is a gen_server, so it's not terribly difficult
to figure out how to fake a request without spawning
anything on the remote node.

Try this (not on a production node!):

{rex,RemoteNode} ! 
{'$gen_call',{dummy_pid,dummy_ref},{call,erlang,halt,[],self()}}.

If you can send a message to any process on a node, you can
do evil things to that node in general.

BR,
Ulf W
-- 
Ulf Wiger
CTO, Erlang Training & Consulting Ltd
http://www.erlang-consulting.com


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