Re: examples of secondary connections
- From: "ZVR" <nospamever@xxxxxx>
- Date: Sun, 2 Oct 2005 14:53:03 -0400
Lots of file sharing programs. For example, an ED2K (Edonkey/Emule) client
requires an incoming connection on a fixed port after establishing the
initial session to a hub, otherwise it will only connect to the P2P network
in "low-ID" mode which has limited capabilities compared to the fully
featured "high-ID" mode that is being used when an incoming channel is
available.
Important to note that the "secondary connection" feature as implemented in
ISA (also called "port triggering" in hardware routers - Linksys, Netgear
etc) is different from a server publishing session/rule as follows:
-server publishing is active at all times whereas a secondary connection
only becomes active in ISA after the primary protocol is triggered from a
client
-server publishing, given it's "permanent" nature, requires a "fixed", known
IP address for the published server, whereas secondary connections are
dynamic and are opened as required to serve any clients on the "internal"
side of ISA, regardless of IP.
Virgil
"Ondrej Sevecek" <ondra at my_surname dot com> wrote in message
news:uyo6lUPxFHA.2540@xxxxxxxxxxxxxxxxxxxxxxx
> Hello,
>
> what are examples of client connections that require a secondary
> connection to a fixed port number? I suppose, it is not a case of FTP
> client because the the secondary connection in active mode comes to an
> arbitrary port specified by client.
>
> O.
>
>
.
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