Dave, maybe I as not all that clear on my Specification: My ICS Clients will be Mobile PHones MIDP2.0, therefor I do not think Hamatchi will work, or would it ?
On Tue, Mar 4, 2008 at 4:10 PM, Dave Baxter <[EMAIL PROTECTED]> wrote: > "NAT Traversal" is well documented, but "less than easy" to make work > from scratch.... > > But why bother rolling your own? Just download and use Hamachi. > (Google for it) Even the free one will start automaticaly when Winderz > boots, then you have a UDP based secure VPN between 2 (or more) sites. > Just about any LAN type app will run across it. (Versions for Winders, > Linux, and some Apple OSwhatsit type things) > > Works very well. I have no affiliation with Hamachi or LogMeIn, just a > very satisfied user of the free version so I can get to my home Win2k > desktop securely wherever I am, and leaving no unwanted holes poked in > the firewall. > > Cheers. > > Dave. > > > > -----Original Message----- > > From: JLIST [mailto:[EMAIL PROTECTED] > > Sent: Saturday, February 23, 2008 8:45 AM > > To: ICS support mailing > > Subject: Re: [twsocket] UDP Hole Punching > > > > My understanding is that it works on certain types of NAT firewalls. > > On these NATs, an external port is mapped to an internal IP:Port. > > If this is the case, all packets going to that external port > > will go to the internet IP:Port. > > > > Making it work is not that simple though, with the difficult > > part being coordinating two parties that do not talk to each other. > > I'm not sure what's being used in real life solutions but it > > sounds to me that both A and B have to have very frequent UDP > > communications with S, or have a TCP connection with S in > > order to coordinate a hole punching attempt. > > > > > Isn't the translation state based on the remote peer IP > > address, too? > > > Then the same translation created for A-S and B-S would not > > work when > > > you try to connect directly A with B. > > > > > ----- Original Message ----- > > > From: "wayne forrest" <[EMAIL PROTECTED]> > > > To: "ICS support mailing" <twsocket@elists.org> > > > Sent: Thursday, February 21, 2008 8:22 PM > > > Subject: [twsocket] UDP Hole Punching > > > > > > >> Has any one made a UDP Hole puncher with ICS ? > > >> > > >> Let A and B be the two hosts, each in its own private > > network; N1 and N2 > > > are > > >> the two NAT devices; S is a public server with a > > well-known globally > > >> reachable IP address. > > >> > > >> 1. A and B each begin a UDP conversation with S; the > > NAT devices N1 > > >> and N2 create UDP translation states and assign > > temporary external port > > >> numbers > > >> 2. S relays these port numbers back to A and B > > >> 3. A and B contact each others' NAT devices directly on > > the translated > > >> ports; the NAT devices use the previously created > > translation states > > > and > > >> send the packets to A and B > > >> > > >> If I were to implement the above, is it really that simple? > > >> > > >> or is there much more to it than that ? > > >> > > >> Any help appreciated, or alternatives, maybe a plugin / > > generic solution > > >> that can be incorporated. > > >> > > >> Our current setup is "Server on PC behind nat" and then > > client on Cell > > >> phone. > > >> > > >> We will have a lot of users not knowing how to do port forwarding. > > > > > > > > > This mail has been scanned by Palmer Cook Computer Services Limited. > www.palmercook.co.uk > -- > To unsubscribe or change your settings for TWSocket mailing list > please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket > Visit our website at http://www.overbyte.be > -- C: 076 337 4368 T: 021 880 2037 F: 021 880 2530 -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
