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Frequently Asked Questions

I behind a firewall? Will it work with a firewall/NAT?

DesiTorrents - FAQ: BitTorrent FAQ
Many of you don't know it but download and moreover upload speeds are closely related to the configuration of your firewall. What a firewall does is mostly closing your computer from the "outside" world, ie. the Wild Wide Web, preventing malicious individuals to screw up with your machine. But BitTorrent needs to be able to communicate freely with this outside in order to give its best potential.
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How do I get Remote Desktop to work with my NAT device or firewall?

Frequently Asked Questions About Terminal Services
These questions are crucial to establishing connectivity. You must be able to ping the remote machine if you want to create a Remote Desktop session. The keys are that you must have port 3389 open or forwarded and also port 80 if you are using the Remote Desktop Web Connection. If you are on a small local network, you must forward port 3389 (and 80 as well if downloading the Web applet) to the Windows XP system. If you have a router, check out some of the documents at PracticallyNetworked.
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Will the client work through a firewall, NAT or Proxy?

Saeven|CRM - helpdesk/email/scheduler/chat/reports
Yes. You must ensure however, that port 3306 is available in order to permit connection to your remote mySQL server. Network Address Translation boxes are not a problem. Non-translating proxies might be however - contact your systems administrator if you are operating under a proxy to ensure that packets will be properly routed.
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Can the InfoGate 3020 work behind a firewall or NAT?

Support - Frequently Asked Questions: Infogate Series
Yes, the InfoGate 3020 can work behind a firewall or NAT, by opening the following ports: TCP/IP: 8481 UDP: 6024, 6026, 6028 & 6030 UDP: 1588 for InnoSphere
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Will Xbox Live work behind my NAT router/firewall?

Unofficial Xbox FAQ
For most routers, yes. The service is designed to work behind a NAT router and you should be able to just plug in and go, assuming your router is handling DHCP services. In addition, there is an excellent network connection troubleshooter built into the XBL front-end. You can configure your Xbox with a static IP if required, you can manually set various network settings, and you can even have the Xbox spoof a certain MAC address if required by your ISP.
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Will VisualRoute work through my company firewall / NAT server?

VisualRoute FAQ - integrated traceroute, ping, Whois, revers...
This depends upon how your firewall / NAT server is configured. Please ask your network administrator if your firewall (or NAT server) is configured to allow PING and TRACERT to work (which use ICMP ECHO, ECHO REPLY, and TTL EXPIRED packets). You can test this yourself by running these programs on your computer (For example, try "tracert www.visualware.com"). If these programs work, VisualRoute should work just fine on your computer.
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What kind of firewall is supported? Does it work with Symmetric NAT?

Frequent questions about VOIP NAT Traversal and Media Path O...
It should work with any type of firewall including Symmetric NAT. Symmetric NAT is performed only by advanced enterprise routers, in that case NATPass™ will recognize this scenario and will make the call succeed by signaling and doing RTP bridging. It is all transparent for the user and there is no need to reconfigure anything.
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What is Symmetric NAT? Is my firewall Symmetric?

Frequent questions about VOIP NAT Traversal and Media Path O...
You can find classification of NAT in RFC 3489 – STUN http://www.faqs.org/rfcs/rfc3489.html. It should not mater what type of firewall you have.
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I am behind a firewall or NAT. Can I still use WuWu?

WuWu - Frequently Asked Questions
Yes. WuWu is completely Firewall/NAT compatible! For additional information on this topic, please read the WuWu Firewall / NAT how-to.
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What is Firewall and NAT Traversal in BitComet?

BitComet FAQ - BitComet
In the world of old bittorrent clients, non-firewalled clients and clients on publicly routable IP addresses are able to help NAT'ed nodes to communicate while downloading the same files. BitComet did a even better job for users behind NAT, it enables users behind differet NAT connected to each other via UDP. That means the download rate may boost up because it can now connect to more peers than before.
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Q12: What should I do in case of a firewall/NAT?

Frequently Asked Questions
Personal firewall: You need to allow RayV application to access the Internet when prompted with the firewall warning message. Residential firewall: The RayV application self discovers and knows how to interact with it in order to properly assure video reception. Statically map the following UDP ports on the viewer to ports on the Firewall public IP address: 22556 & 22557
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What ports does BitTorrent use? Will it work with a firewall/NAT?

BitTorrent FAQ and Guide
The quick summary: You need to forward your ports if you have NAT in order to get the fastest speeds. This is probably the most common thing that people fail to do when using BitTorrent. Read on for more details of what all this entails, and if it's something that you need to do. Prior to version 3.2, BitTorrent by default uses ports in the range of 6881-6889. As of 3.2 and later, the range has been extended to 6881-6999. (These are all TCP ports, BitTorrent does not use UDP.
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I use a router/firewall/ICS/NAT and can't get internet-based multiplayer to work?

Freeform Space Combat / Trader and Mercenary Simulator (PC S...
If your firewall/router supports UPnP (Universal Plug and Play), enabling this service can help configure your connection for multiplayer gaming. UPnP can be particularly useful for hosting games. In the Networking Services list, make sure the Internet Gateway Device Discovery and Control Client check box is checked, then click the UPnP User Interface check box, then click OK.
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How does Windows Firewall work?

Firewall: FAQ
Windows Firewall monitors all network traffic on the connections for which it is enabled. The firewall keeps track of all communications that have originated from your computer, and it prevents unsolicited traffic from reaching your computer. If necessary, the firewall dynamically opens ports and allows your computer to receive traffic that you have specifically requested, such as a Web page for which you have clicked the address.
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How do I get freenet working with a Firewall/NAT?

The Freenet Project - faq
Freenet ought to work "out of the box" behind most NATing device... but following the following steps might be usefull for your node to re-establish its links faster. Configure your NAT or firewall to forward connections to the node.listenPort number (You can find it in a file called freenet.ini in the freenet folder), to the same port on your computer (you will probably need to know your computer's internal IP address which will often begin with 192.168.x.x). Remember that freenet 0.7 uses UDP.
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I'm behind a firewall/NAT, can I use BitTorrent?

BitTorrent/FAQ - Anarchopedia
Yes, but you will get better performance if other peers can connect to you. By default, BitTorrent listens on port 6881, trying incrementially higher ports if it's unable to bind. It gives up after 6889 (the port range is configurable.) It's up to you to figure out how to poke a hole in your firewall/NAT.
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In the eRacks/NAT Firewall, Is NAT used for incoming or outgoing traffic?

eRacks faq
Incoming traffic is usually accomplished by simple port-forwarding, with certain types (fragmented, for example) of traffic filtered out. Although ports can be forwarded to other internal IP addresses, this isn't generally referred to as NAT, which includes port-remapping as well as forwarding.
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What if I have a firewall? How would it work?

Access Point Products: VoicePoint Frequently Asked Questions
Answer: You have multiple approaches for delivering IP telephony while keeping the firewall intact. The solution operates outside of the firewall and can utilize a Network Address Translation device (NAT) that only allows voice calls to the specific IP addresses through the firewall.
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Will it work through a firewall?

PC Diagnostics, Diagnostic Software, Hardware, Download Util...
Yes. A port needs to be open through the firewall of course, and that port can be specified in the Client configuration.
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Will it work behind a firewall?

Sort of. There is basic provision for a simple web proxy, which will allow you to query the Gnutella and hotline search engines, but most firewalls will not allow gnutella, hotline or OpenNapster connections. Enable the following ports for best results. Carracho downloads are not possible, only searching. I will add it if someone figures out the download protocol!
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How does NAT work ?

www.draytek.com.au -
If the packet is to go out the WAN interface, the router applies NAT (Network Address Translation) by changing the packet header's source address from the originating device's private LAN IP, to its own public IP address. Thus when it arrives at its destination, it will appear to have originated from your routers public address, and any reply will be sent there.
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Icom-web - total internet solutions
NAT is often built into routers. It receives each packet from the internal private network and modifies the IP header to match the global IP address of the router, before it is transmitted out into The Internet. The router stores the internal IP address, destination IP address and port number in a routing table so when a request is returned on the same port, the NAT can match the internal IP address that originated the request, and then modify the IP header to match that of the internal address.
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What is a firewall?

Firewall: FAQ
A firewall is a piece of software or hardware that helps screen out hackers, viruses, and worms that try to reach your computer over the Internet. If you are a home user or small-business user, using a firewall is the most effective and important first step you can take to help protect your computer.
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Can I use Netphone2phone with a NAT (Network Address Translator) or a firewall?

NetPhone2Phone
A NAT is often used between private networks (like those used at home or at work) and the Internet to map a private IP address to a public IP address. Routers and software gateways (such as Internet Connection Sharing in Windows) usually also function as NATs. Firewalls, on the other hand, filter access to protected networks. Netphone2phone works with most NATs and firewalls without any additional setup.
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Can I use a "Broadband" router with Firewall, DHCP and NAT?

WOWACCESS FAQ
Yes, you can use a "Broadband" router in your location. There many versions available at most electronic stores, from wireless versions to hard-wired.
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How do I setup my firewall, proxy, or NAT router to use the operator client?

ChatStat : Live Chat and Statistics
You do not need to configure your firewall, proxy, or NAT router to use either operator client. Both operator clients only use outbound HTTP connections to the ChatStat Server which allows both operator clients to work with zero configuration behind firewalls, proxies, and NAT routers.
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Can I use eBLVD behind a Network Address Translation (NAT) router or firewall ?

Web Conferencing and Remote Support Solutions to enhance Bus...
Think of eBLVD as you think of accessing secure 128-bit SSL web pages. A sophisticated hacker could intercept your web session but would only see encrypted data. The hacker would need to decode each individual stream of data and reassemble it to be able to view the data. This is virtually impossible.
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