Why is port forwarding needed?
453513
Apples and Oranges.\n\nMAC codes, data link, and port forwarding have nothing to do with each other.\n\nYou need port forwarding so your router knows WHICH PC is hosting the web site. So, when a user tries to access it from the internet, the router knows where to send him.\n\nThe router doesn't know or care where your website it.
981630
If you have a network, you have a gateway.  The big Pro is also the big Con: the security of NAT- you have an inward-facing IP, and the router/ computer with ICS has an outward-facing IP.  It is a royal pain to directly connect to a computer on network, even with the password, if it even can be done the way you want it to in the first place.  Port Forwarding is the stuff of nightmares.
788851
make sure your dhcp server is reachable from your computer. Most of the time its a firewall blocking it so turn off your firewall.\n\nAlso, make sure you dhcp is actually running. ;)
624586
You will have to go thru the firewall  of thegateway thru (usually) port forwarding. This will have to be setup by the System or Network Admin.\n\nThere are two ways UDP or TCP/IP you will probably use the latter.\n\nThink of it like a door. The front of the door is to  the internet, it has an address (IP#) The back of that same door has a different address. You have to go thru two addresses to get to the LAN network so that you can acces the computers on that Network (LAN Local Area Network).\n\nYou do this thru port forwarding or VPN (Virtual Private Network). Either way you need the Admin to set it up as a direct line
242709
Call up your ISP.  If you've signed up for an ordinary account with an ISP then your IP is dynamic (ie it will change over time). You don't want to mess with ports unless you know what you are doing.\n\nWhat do you need to change it for?
1061018
this website has step by step instructions for port forwarding make sure that you follow all the steps. as far as best torrent client is concerned i think azures works very good its only problem is using too much resources. if ur computer slows down becoz of azures try bitlord a very good free torrent client\ncheck out mininova.org for torrents. the url for port forwarding is below\nhttp://www.portforward.com/english/routers/port_forwarding/routerindex.htm
421812
Here's a list of well-known port numbers:\n\nhttp://www.iana.org/assignments/port-numbers\n\nAssuming that's what you meant.
168234
Well the above 2 answers good and enough for you. But in addition u can also set the firewall on.
215177
Port scans happen all the time.  You don't usually report them to anybody.
138087
What Firewall setup are you using?
22441
You have to open a port on your Firewall or Router, so that other clients can contact you (to be connecteable).\n\nThis is the most common reason for low speed (also on other P2P Platforms like eDonkey)
110724
egads...#1-wrong, #2-wrong.\n\n\n#1 "...The computers behind your router use non-routable IP address, for example, 192.168.0.9..."\n\nthe local IP's are certainly routable, they are just not exposed to the Public internet as that IP.\n\n#2 "...ISPs usually block the ports that FTP and web servers use. You may need to use a port other that 21..."\n\nSOME ISP's may block that port, far more do not, than do in my experience. \n\nto answer the question, the software you installed seems to be aquiring another IP address from the DHCP server in your router, let it.  Setup 'port forwarding' in your router to forward traffic on port 21 to go to THAT IP address.\nNOTE: you will likely not be able to access FTP resources from the PC the 'server' is installed on, unless you disable the 'port fowarding'....
777375
Both support TCP/IP which you are using now. Set up each computer with an address on the same subnet.
521946
As far as I know there is no problem if:\n- You install the software correctly\n- And... use the latest versions by the help of updating you port collection\n\nI have a box right now with all of those software packages that you asked except Bandwidthd.
96276
Because your software is seeing information come through a port that is not on it's safe list. Just hit 'allow always' or whatever message gives that option.
270457
You either are on a local network or are on broadband (cable, satilite or DSL) and are using a router. \n\nGo here for free info on how to configure it:\nhttp://www.portforward.com/routers.htm
251845
You should be able to configure your router so that incoming traffic to each of three particular ports (or ranges of ports) is forwarded by the router to each internal system.\n\nIf you need web access to the internal systems, you'll need to include the port number in the web address:\n\nhttp://www.something.com:1234\n\nwhere www.something.com is set up to go to the external router, and the port 1234 is forwarded by the router to one of the internal systems.