Setting up a socket from a hotel

Discussion in 'Automated Trading' started by sprstpd, Aug 25, 2006.

  1. sprstpd

    sprstpd

    I am not sure this is the best forum for this question, but I figured I would give it a try.

    I have a custom system/application that involves communication between two machines across the internet via a socket. Normally, I have complete control over the networks at both endpoints. I can set up the networks at either end to forward the correct ports to the correct machines so that this socket connection works.

    Now suppose I want to travel and I am in a hotel offering internet access. What I would like to do is set up a socket between my laptop at the hotel and one of the endpoint machines talked about in the previous paragraph. However, I have no control over the network at the hotel. I can send packets from the hotel to the other machine, but all packets sent from the external machine back into the hotel get blocked.

    I know that the hotel must leave some ports open for two-way communication, such as port 80 for web browsing. It seems like there has to be a way to con the hotel network into allowing these incoming packets to get back to my laptop.

    I have tried doing searches on this topic but I can't quite find what I am looking for on Google or I don't know the keywords I should be searching for.

    If anyone has any suggestions or experience with this type of situation I would be grateful if you could provide advice or even a link somewhere to get me started.
     
  2. m4a1

    m4a1

    if you can do what you want it to do then doesn't it mean the hotel would have to turn off its firewall?
     
  3. sprstpd

    sprstpd

    Right. Are there ways to get around firewalls at hotels without asking them to turn the firewall off (which they won't)?

    The only reason I am hopeful is because when you are web browsing you are sending out requests through (probably) port 80 at the hotel and you are receiving back replies somehow. Is there a way I can piggyback that?
     
  4. nkhoi

    nkhoi Moderator

  5. sprstpd

    sprstpd

    Thank you - "HTTP tunnel" was the hint I needed. I think I am going to try some Gnu licensed software first:

    http://www.nocrew.org/software/httptunnel.html
     
  6. teun

    teun

    I would use SSH.
     
  7. sprstpd

    sprstpd

    Thanks. Did a little more research and came up with this link:

    http://sebsauvage.net/punching/

    So SSH inside of httptunnel.