Gpg Agent is listening on port xyz
wk at gnupg.org
Fri Nov 18 09:54:28 CET 2011
On Fri, 18 Nov 2011 05:55, jw72253 at verizon.net said:
> Hello. When my firewall advises me that GPG agent is "listening on:xyz",
> what exactly is it listening for and is that necessary? Thanks.
On Windows we don't have Unix Domain Sockets. The emulation we use
consists of a plain file giving a TCP port number. The server
(e.g. gpg-gent) is listening on localhost and that port number. The
client connects to localhost and that port number. This emulation
yields semantics similar to a Unix Domain Socket.
We use this IPC mechanism for interprocess communication between gpg and
gpg-agent. gpg-agent and scdameon, etc.
Given that the server is only listening for connections from localhost,
this scheme is a pure local IPC mechanism. Unfortunately some firewalls
don't get it right and try to protect against attacks from one-self.
Die Gedanken sind frei. Ausnahmen regelt ein Bundesgesetz.
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