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routers

By aftaab ·
what are the issues to be taken into consideration when configuring a router?

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by wbaltas In reply to routers

That's a wide open question, but I'll take a quick stab at this. Perhaps you could supply more information after reading my short reply.

The three issues to start with are:
Addressing
Routing
Security

Addressing is probably one of the easiest items to account for but often the most difficult to understand. When configuring a router, remember to identify the networks where traffic devices will connect. This is a network device so a router will take one address from each network that it connects.

The second item is routing. The routing table can be build dynamically, and I recommend this unless you have a very small network or have a lot of time on to manage a routing table. In the cisco environment, it is fairly easy to configure IGRP, RIP, or EIGRP for most networks. One thing to remember, is that a router will not forward broadcast traffic, protocols such as DHCP are broadcast based (the discover process is a broadcast.) Because routers will not forward broadcast traffic, special traffic such as DHCP must be configured to forward to the appropriate server.

Security is the final area in router configuration. Remember a router is not a firewall, but it can perform some firewall tasks such as basic packet filtering. Also, harden the router from attacks as best you can. For a cisco environment, O'Reilly press has a book called Hardenign Cisco Routers that I recommend.

Good Luck
Bill Baltas

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by mdlnet In reply to routers

LAN IP address, WAN IP address, subnet mask, DHCP, DNS, if you have this information you can make it work,set up your router as DHCP server and your work stations to obtain IP automatically.
good luck!

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by neil.harding In reply to routers

Depends on the router and environment it's going into.

If it's a home set-up - just make sure DHCP is enabled, NAT and a firewall.

If it's a company then there are other things to consider. Like E-mail/Proxy access, Firewall, VPN

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