BEFSR41 quick question

[Stingreen]

Guys, I bought Linksys BEFSR41 sometime ago. Basicly the connection is not coming directly from the Cable/DSL modem. It's coming from another switch, then connects to my linksys router. Would this work ?? I shouldn't attach the cable into WAN port right ? ( uplink maybe ?)
Thank you.

 

[TheOldMan346]

Stingreen,

If the connection is coming from another switch and not the Cable/DSL modem, what you've got is an ethernet connection. Don't connect it to the WAN port. You can connect it to the Uplink and just use the switch functions of the BEFSR41.

Note that the Uplink port is shared with the LAN port next to it so you will not be able to use that port. Can't remember which number that port is.

Hope that helps.
The Old Man

 

[Stingreen]

So, basicly I'll not be able to use this as a router but a switch ?
No firewall, port forwarding capabilities for me then, huh ?
Hmm, Can you recommend me any router which I could use it in my system? I'm interested in firewall ( packet filtering) and port forwarding features of it..

Thanks for the help..

 

[TheOldMan346]

Stingreen,

Actually, I gave you a quick answer to a quick question. The router's routing functions can actually be used in addition to just the switch but that requires subnetting, routing and a good deal more explanation. Post back if you need it.

The Old Man

 

[Stingreen]

Oldman, that would be great if you'd give me a brief explanation on how to do it,
Thanks a lot.

 

[TheOldMan346]

Stingreen,

The answer will depend on the nature of the upstream setup. Is it cable or DSL, PPPoE, static or DHCP, single or multiple IP's and how it is physically connected.

Is the internet connection that is coming from a switch also being routed? In other words, does the connection from the modem go to a router and then you are picking up a port on the switch? If so, you are not going to get the functionality you describe.

If, on the other hand, you've got a cable connection with multiple static IP's that goes from the modem to a switch, you will be able to use the port forwarding, firewall, etc.

Can you describe the connections?

The Old Man

 

[Stingreen]

Basicly the main connection is 0C-3 is provided by sprint comes to our building. Our ISP which is located downstairs using cisco 7000 series routers to accept the connection. Than that connects to a simple cisco switch, then as a end user we're getting only 1 cable from downstairs. What I want to do, I wanted to seperate our network from hundreds of other networks in the building.. ISP is charging for static IP's but we already have 5 of them, since we have more than 5 PC's, we need fake IP's to connect the rest to the internet. I figured, linksys BEFSR41 could protect us from intrusions as well as providing DHCP service by assigning fake IP's.
PS: Those 5 are servers..
Thanks a lot.

 

[TheOldMan346]

Stingreen,

Under the conditions you describe, it sounds like you will be able to use the full functionality of the router. Since you've already got 5 IP's and these are servers, let me ask if these servers need to be accessible to the internet? Are they web servers, ftp servers or something like that? If so, you may want to deal with them separately. How are you presently sharing the cable from your ISP?

You can plug one of the connections from the switch into the WAN port on the router. I can't remember for sure how the components are classified but if I recall correctly you should be able to plug the same straight-through cable into the router's WAN port. If you don't get a link, you may need a cross-over cable. You can then use the LAN ports on the BEFSR41's switch to add other computers and network gear. You will need to configure the router to use static IP for it's WAN address and configure a separate LAN address range for DHCP.

Good luck. Hope that helps.
The Old Man

 

[ceh4702]

why not uplink the switch to the router and connect the router to the WAN? If you do not like my post feel free to point out your opinion or my errors.