The main reason for your failed connections are related to your "LAN provider". OK you don't have a firewall on your PC. But the firewall is run by your provider. Most probably, it won't let you access to the Internet without using some sort of proxy (look at your Internet Explorer or Netscape browser proxy settings: if they are configured there, you'll need to configure LimeWire to use that proxy too.

Note however that LimeWire supports authentication on proxies only in Socks v4 and v5; secure authentication on HTTP proxies still does not work, and is quite complex to implement; there exists some third party tools that allow proxying locally connections to external proxies, to perform secure authentication on that remote proxy.

There are tons of Internet connection methods. LimeWire developers make many efforts to support these, but this is a complex task. LimeWire works and is heavily tested to support the most common configurations, including direct Internet accesses, accesses through NAT routers and personnal firewalls.

But what an organization can do on its LAN router to filter Internet accesses is out of control of LimeWire. Only your LAN administrator can help if you are in troubles, to get details about the exact configuration to setup (note also that some organization firewalls are extremely strict and won't let you do anything than basic HTTP for browsing (often through proxies), and even your emails must pass through a local central SMTP/POP3 service which is the only one allowed to connect to the Internet).

In some cases, the configuration of proxies is hidden to you (you can't even get details about them in your Internet Explorer settings, or there's a enterprise "group policy" that restrict accesses to these parameters, that are distributed by the router automatically to the hosts connected on the Internet. If this is the case, only your LAN administrator can help you get the details. May be these details are hidden on purpose, because there's an enterprise policy that its Internet connection must only be used for your work, excluding all personnal activities: such company should have informed you about it, and your usage may be logged.

Don't use LimeWire at your work to get access to resources on the Internet, unless you are given the authorization, and allowed to perform such activity during your working time. Such unauthorized usage places you at risk of being fired or fined in a court by your company: this is not YOUR network access, and a company pays for your working time, so you MUST comply to that local organization rules.

Even at home, with your "own" Internet access, you must still comply with the ISP's terms of service, and you must take your own responsability about what you can and cannot do according to the TOS contract.

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