A Static setup for
A static configuration has all its WAN parameters hard coded even though you assign DHCP configurations for your clients.
In this example I will use real public IP addresses instead of a generic n.n.n.n format. Substitute any valid private IP for 192.168.0.n. The 216.252.80.n and 64.254.0.n belong to my ISP in Canada.
This is the same as the DHCP example except that the company router is your BrazilFW/Coyote Linux. Your company has bought a block of 16 IP addresses for your T1 connection and the ISP installs a Cisco router which is owned and controlled by them. See my Proxy ARP using Brazil Firewall for another situation where you own a block of IP addresses.
Your IP block is 216.252.80.144 through 216.252.80.159, where 216.252.80.144 is the network address, 216.252.80.159 is the broadcast address and the rest are free for you to use. The ISP has decided to assign 216.252.80.145 as your default gateway to the Internet and you have decided to use 216.252.80.146 as the WAN address of your BrazilFW/Coyote Linux router and also decided to use 192.168.0.0/24 as LAN addresses.
There are 3 networks represented here and 2 routers. Each router sits on 2 networks and routes between them so each has a WAN and LAN side. The WAN IP of a lower level router is part of the LAN of the higher level. The networks are INTERNET, ISP, and YOURS represented by GREEN, BLACK, and RED respectively. There may be other terminologies to express these terms but this is how I say it.
On the BrazilFW/Coyote Linux panel fill in 216.252.80.146 as your IP address. Use 216.252.80.145 as the gateway. 216.252.80.128/28 translates to a mask of 255.25.255.240 so use that as a mask. They would usually give it to you in that 255.255 format anyway or both. They would also supply you with their DNS servers so fill those in. If you have a host name and domain use that too. That's it. All the rest is like home use ADSL or cable.
Need help with these network masks and their /nn equivalent formats?
See my IP range calculator using an IP range and my .
DISCLAIMER: The following instructions come with no warranty. Use at your discretion and risks. I am not responsible for its misuse, damages, or losses that can be caused directly or indirectly. It is assumed that you practice safe computing and take backups before making changes.
Stuff is written here for the uninitiated and no prior knowledge on the subject is presumed.
For support use the Brazil Firewall forums so everyone can share the information.
copyright for the writing. The ideas and code are free. Robert Bonomo