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RAS
How can I speed up my ADSL
line connection?
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Because TCP/IP is packet based, each time a packet is sent,
it must be acknowledged via an acknowledgment packet. This
slows down the system. To keep the sender from having to wait
for every packet to be acknowledged before sending another
one, you can increase the window size (TcpWindowSize) value
on the receiver end. Then, the sender can send packets until
that value is reached before the receiver needs to send an
acknowledgment. To tweak the TCP/IP parameters to increase
the window size, you need to manually update the registry:
- Start regedit.exe.
- Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\
Tcpip\Parameters.
- From the Edit menu, select New, DWORD value.
- Enter a name of TcpWindowSize, and press Enter.
- Double-click the new value, change the Base value to decimal,
and enter a value of 32767. Click OK.
- Close regedit.
- Reboot the machine.
In step 5, you can actually specify a higher value (up to
256000). However, on slow networks, this larger window size
means that more data will need to be retransmitted.
If you're interested in a great site that helps you test
your DSL connection speed and configuration, check out http://www.dslreports.com/.
How do I configure the services
that Internet Connection Sharing provides?
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With Internet Connection Sharing (ICS), you can offer services
(e.g., FTP and Telnet) to remote networks from clients on
your network. To enable services, perform the following
steps:
- Click Start, Settings, Control Panel, Network and Dial-up
Connections, [RAS connection]).
- Select Properties.
- Select the Sharing tab.
- Click Settings.
- Select the Services tab.
- Select the services you want to enable:
- FTP Server
- Internet Mail Access Protocol Version 3 (IMAP3)
- Internet Mail Access Protocol Version 4 (IMAP4)
- Internet Mail Server (SMTP)
- Post Office Protocol Version 3 (POP3)
- Telnet Server
- When you select a service, you need to enter the DNS
name and IP address of the machine on the local network.
- Click OK.
- Click OK to close the main dialog box.
To add a service, on the Services tab, click Add and enter
a name for the service, the port number to use, whether
it's TCP or UDP, and the DNS name or IP address of the machine
on the local network offering the service.
How do I connect two Workstations
using RAS?
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NT Workstation supports one inbound RAS connection so one
NT station will be the RAS server, and one will be the client.
The procedure below is what I did to connect two machines.
Server
If RAS is already installed
- Goto Control Panel, and double click Network
- Goto Services and click on “Remote Access Server”, and
click Properties
- Click on the Port and click Configure
- Select “Dial Out and Receive” or just Receive
- Click Continue
- Select if user can access Just Computer or Entire Network
for NetBEUI
- Click Continue and fill in details for TCP/IP, For this
setup we will assume the dial in client will have a TCP/IP
address so check the box “Allow clients to use preconfigured
address”
- Click OK and then close
- You will then be prompted to restart the computer
If RAS is not already installed, goto “My Computer” and
double click “Dial-up Networking”, it will then detect your
modem and then take you to step 3 as above.
Client
This assumes RAS is not installed
- Goto “My Computer”, and double click “Dial-up Network”
- You will be asked for the NT CD, and it will install
Modem and RAS
- It will then detect any modems, once the modem has been
found click continue
- It will then say the phone book is empty and you should
add an entry. Give a name and select “Next” (do not select
“I know about modem properties” unless you do”)
- Select “I am calling the Internet” and click Next
- Enter the phone number and click Next, then click Finish
- Select the entry, and click More, select Edit Entry
- Goto server Tab, and check NetBEUI and TCP/IP. Click
TCP/IP details and fill in then press OK. Finally click
OK again.
- Select the PhoneBook entry and click Dial.
- The first time you connect you will have to supply a
username, password and domain (select “save password”
so this information does not have to be entered again).
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