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  1. Linux Manual
  2. Installation & Internet
  3. About the Author
  4. Content
  5. Installation
  6. Choosing a Linux Distribution
  7. Partition types
  8. Fdisk
  9. Understanding Mount Point /mnt
  10. Linux File Structure
  11. Creating a boot disk
  12. Welcome to Linux Installation
  13. Installation mode
  14. Partitioning
  15. Creating partitions with Druid
  16. Creating partitions manually
  17. Formatting Partitions
  18. Individual packages selection
  19. The root account
  20. Network configuration
  21. The time zone
  22. Configuring Services
  23. Configuring X
  24. Installing Mandrake 9.1 & 9.2
  25. Installation Class
  26. The Drake X Partitioning
  27. Package Selection
  28. Configuring X
  29. The Internet
  30. Creating a new user
  31. Getting online
  32. Configuring the connection (Dial UP)
  33. High Speed Internet
  34. DSL Modems and Cable modems
  35. Connecting DSL as DHCP
  36. Setting up a Plain Cable Modem (DOCSIS)
  37. Connecting an ISDN
  38. Using Routers
  39. Login Protocols
  40. PPPoE
  41. WAN IP Address
  42. Commercial Configuration
  43. Troubleshooting

Commercial Configuration

On occasion the ISP will send a modem/router (combo). This type of equipment does not require a separate modem for the connection. It is unusual to get one of this equipment unless you are running a business. It may also depend on your account such as a package of static IP's etc.

Fig 2.39
Fig. 2.39

Figure 2.39 basically represents combo equipment. This Router is configured exactly the same way as we already did for our last two connections.

WAN IP: Static Address Configuration

This settings is much easier to configure manually, all you have to do is get to the Static configuration page. The ISP should have sent you all the information required for the setup, in this case your IP Addresses. See the following table.

Your Router SideYour Network Side
Router IP168.3426.561st IP168.34.26.58
Gateway168.34.26.572nd IP168.34.26.59
Subnet mask255.255.255.2483rd IP168.34.26.60
ISP's DNS209.244.0.34th IP168.34.26.61
ISP's DNS209.244.0.45th IP168.34.26.62
  Subnet mask255.255.255.248
Table 2.2 This table shows a typical configuration sent by your ISP, an account with 5 static IP addresses

Figure 2.40 shows all entered IP addresses required for the connection (router side).

Fig 2.40
Fig. 2.40
  • Enter the router's IP address here.
  • Enter the subnet mask
  • Enter the Gateway
  • Enter the DNS

This router now has all the necessary information to connect to the Internet. According to Table 2.2, you have 5 static IP's. The range of the IP address from table 2.2 then would go into the Local Area Network (LAN) IP Setup, see fig 2.38. When you enter the range of your public IP's in the LAN IP section, then you no longer can assign 254 hosts, but the 5 IP's controlled by the subnet mask 255.255.255.248.

At this point your router has 5 public static IP's, which means that if you configure 5 computers with this IP addresses each computer could be a server over the internet.

You could also add an additional router to any of these IP addresses with a hub or switch to serve an internal local area network, or use any computer connected to any of these IP addresses and convert it into a Proxy server to assign an internal subnet which will provide Internet access to all the clients in the Local area network.