nat

My question is the same as this one but hopefully adds clarity to get an answer. After reading this fantastic article on the specifics behind NAT Traversal along with a general summary of methods found here , I'm wondering if the scenario has been accomplished or is possible. I'm writing software that serves web pages on any specified port, and am wondering if it is possible to have a web client from the WAN side connect to this server that is behind a NAT router. The reason this I'm finding this difficult is because: I don't want to tell the user (who owns the web server) to configure their

My Spring application is running on a machine that is behind a NAT firewall (pfSense). The machine's internal IP is a.b.c.d , and the NAT IP is w.x.y.z The Spring configuration's serviceUrl is set to my internal IP ( a.b.c.d ) on port 1100 , and when I start the application, I provide the following switches: -Dcom.sun.management.jmxremote -Djava.rmi.server.hostname=w.x.y.z -Dcom.sun.management.jmxremote.port=1099 -Dcom.sun.management.jmxremote.local.only=false -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false As shown above, I set -Djava.rmi.server

I'm currently trying to send UDP messages over the internet and have to set up the firewalls for both endpoints A and B (which are both behind a NAT). To do this, I want to use hole punching using a STUN server. When A creates a request to the STUN server (say, private: 85.1.1.12:6000 and public: 173.194.78.127:19302) I get 85.1.1.12:6000 as a response. If I were to send a packet from the same origin configuration (same origin ip and port that were used for the STUN-request) to any other destination address (the destination port stays the same) then my NAT would change the public port again

I was just downloading a new distro of linux using uTorrent, and started to wonder how uTorrent (and other bittorrents) send files to eachother through NAT routers? They obviously use the trackers to get introduced, but how do they pass info to eachother? Is there a whitepaper on this? I couldn't find one :/ Thanks Most of the time, they don't. I have a restricted network, and every time I run my torrent program it warns me that some of the ports/functionality required is not available to me. If one party has a restricted network and another has an open network, the restricted client will

I am curious about the usefulness of NAT and NAT traversal mechanisms once the deployment and usage of IPv6 increases. We have so many NAT traversal mechanisms (including proprietary) which are intended for mainly IPv4 devices/clients which are behind some kind of residential or enterprise NAT's. Given that NAT came about because of the lack of available addresses in IPv4, is it likely to become redundant once IPv6 is adopted widely in the coming years since IPv6 has enough addresses? Of course, I do understand that adoption of IPv6 will not happen overnight and it is a gradual and painful

I need a solution for NAT traversal to transmit RDP data across the internet. I came across the following tool and it's really amazing - pwnat . I have tried it with the two different machine behind different router, but i am unable to make it work as explained in the above link. So is pwnat still working and if yes what could I have done wrong? It would be very helpful for me. Note: I am using windows machine for testing and downloaded the windows version from the following link.. http://www.sumitgupta.net/pwnat-windows-complied-version/ Any help please.. No. I assume you know how it worked:

Just curious about a particular scenario of NAT. Let's suppose we have 4 computers sharing a global IP address under the NAT. I understand that the NAT box keeps an internal record to know which computer to forward requests to. But let's say on computer #2 I'm trying to download a file. And let's say on computer #1, #3, and #4, I'm just browsing the web normally. When the browser initiates a TCP connection to get that file, how does it know which computer to give it to? I mean like, each of the four computers is using port 80 to browse the web right? How does the NAT's record distinguish which

We are deploying web applications in java using tomcat on client machines across the country. Once they are installed, we want to allow a remote access to these web applications through a central server, but we do not want our clients to have to open ports on their routers. Is there a way to tunnel the http traffic in a way that the central server can access the web application that is behind the firewall ? The central server has a static ip address and we have full control over it. We don't need to access the filesystem, we only want to access the web application itself through a browser. For