Internet Connection Sharing:

Microsoft Internet Connection Sharing allows many computers on a network to access the Internet through one computer that is connected to the Internet.

If you are using iClose-Up on or behind a Windows 98 or Windows Me computer running Internet Connection Sharing (ICS) you will need to run an iClose-Up Reg file to change entries in your registry file. Internet Connection Sharing (ICS) on Windows 98/Me blocks ports that iClose-Up needs, and by running this reg file these ports are opened. The file which is called “ICS for Win 98, Me (run this file on the ICS server)” is located in the iClose-Up folder which is usually in the Program Files folder. You should put this file on the computer that is acting as the ICS server. Then run this file on the ICS server. You can run it by clicking on the Start menu in the lower left of the screen, then click on Run, then click on Browse. Browse to the location you put the file “ICS for Win 98, Me (run this file on the ICS server)”, select the file and then press the Open button and then press the OK button to run this ICS file.

Technical Note: When ICS is installed by default it sets an IP address of (192.168.0.1). This default address hardly ever needs to be changed. If this IP address was changed by you or the network administrator when ICS was installed, then you should open this file in your word processor or editor, then find the line "ICUP"="192.168.0.1" and change this IP address (192.168.0.1) to the internal network IP address of your ICS server computer. Save this file as a Text file. Now run this file on the computer that is acting as the ICS server.

If you are using iClose-Up on or behind a Windows 2000/XP computer you do not have to modify the registry because Internet Connection Sharing (ICS) on Windows 2000/XP does not block any ports. If you are running a firewall on the Windows 2000/XP computer make sure to open the ports iClose-Up uses. See Firewalls & Ports.

Step One, if you are using a Internet Connection Sharing to have your computers get on the Internet and you just want to use the iClose-Up computers as Clients to go out through your Internet Connection Sharing computer then you should on each computer running iClose-Up that is behind the Internet Connection Sharing computer, double click on the red iClose-Up triangles in the lower right of your screen and then press the Options button and select the Proxy tab. Turn on, by checking the option “Internet Connection Sharing/Proxy Servers/Routers”.

But if you want to have incoming connections, that is iClose-Up Clients outside your Internet Connection Sharing computer connect to computers sitting behind your Internet Connection Sharing computer, then you have two options:

Option 1 (the easiest option): Install the iClose-Up Proxy software on the server (computer) running Internet Connection Sharing. You can get the iClose-Up Proxy software by downloading it from the Norton-Lambert web site at www.iclose-up.com. There are three steps you need to follow to fully install the iClose-Up Proxy software, which will give you both out going and incoming iClose-Up connections..

First step, you or your network administrator should install the iClose-Up Proxy software on the Internet Connection Sharing computer. See the section “How to Install the iClose-Up Proxy Software” in this online Help.

Second step, you should on each computer running iClose-Up that is behind the Internet Connection Sharing computer, double click on the red iClose-Up triangles in the lower right of your screen and then press the Options button and select the Proxy tab. Turn on, by checking the option “Internet Connection Sharing/Proxy Servers/Routers”.

Third step, in the same Proxy tab as step two above, turn on by checking the option “This Computer is behind a Windows Proxy Server using iClose-Up Proxy Software”. Now enter the internal network IP address (not the external internet IP address) in the space provided of the Computer running the iClose-Up Proxy software. That is all there is to do.

Note that being behind the Internet Connection Sharing computer with iClose-Up Proxy software on it will be transparent to any outside iClose-Up Clients trying to connect to you. Your iClose-Up Server computers will appear in the “Available” section of the outside iClose-Up Clients “iClose-Up List”.

Option 2 (the most efficient option): If you are technically up to it or have access to someone who is, you should set up Port Forwarding on the Internet Connection Sharing computer. Follow the steps below to have both out going and incoming iClose-Up connections.

First step, you should on each computer running iClose-Up that is behind the Internet Connection Sharing computer, double click on the red iClose-Up triangles in the lower right of the screen and then press the Options button and select the Proxy tab. Turn on, by checking the option “Internet Connection Sharing/Proxy Servers/Routers”.

Second step, you would now go to the Internet Connection Sharing computer and setup port forwarding for the incoming connections. If you are only going to have one iClose-Up computer behind the Internet Connection Sharing computer then you will not need to change iClose-Up’s port number (which is 2338). If however you want to have several iClose-Up computers behind the Internet Connection Sharing computer you would have to give each iClose-Up computer that is behind the Internet Connection Sharing computer, its own port number. You would go to each computer running iClose-Up that is behind the Internet Connection Sharing computer and change the port number in the option “iClose-Up Port Number for this computer” in the Options, Proxy tab. You get there by double clicking on the red iClose-Up triangles in the lower right of the screen and then press the Options button and select the Proxy tab. Note, using Option 2 is more efficient then using Option 1 above because there is less software involved which allows for faster interaction through a heavily used Internet Connection Sharing computer.

Any iClose-Up Clients that connect to you will automatically shift to using the correct port. Being behind the Internet Connection Sharing computer with Port Forwarding on will be transparent to any outside iClose-Up Clients trying to connect to you. Your iClose-Up Server computers will appear in the “Available” section of the outside iClose-Up Clients “iClose-Up List”.

Modem Note, if you are using iClose-Up on the Internet Connection Sharing (ICS) computer and you want to turn iClose-Up’s server on to receive incoming modem connections (not incoming Internet connections) you will have to temporarily disable Internet Connection Sharing, while iClose-Up takes incoming modem connections. Then re-enable Internet Connection Sharing. In addition, if your Internet Connection Sharing (ICS) computer gets on the Internet by dialing, then use ICS’s dialer and not iClose-Up’s dialer to dial the Internet.

Technical Note, an iClose-Up computer that is being an iClose-Up Server can at the same time be an iClose-Up Client.