ER-3 -Comcast Fiber

[mroth911]

https://business.comcast.com/help-and-support/ethernet/comcast-business-ethernet-equipment-configuration/

[mroth911]

Thats what i was given from tech support

[JaredBusch]

Ok, I just reread some of your posts here. Let me make you a screenshot.

[mroth911]

ok thank you so much!

[JaredBusch]

Basic Wizard

I always expand the secondary LAN, give it a non-default IP, a /24, and disable the DHCP on it. No reason to use resources.

You can just ignore the LAN block from Comcast.

[mroth911]

so if i configure any ethernet port on a computer connected to the network i will be about to use the public ip ?

[JaredBusch]

@scottalanmiller said in ER-3 -Comcast Fiber:

@mroth911 said in ER-3 -Comcast Fiber:

I have my own public block..

But why? Is there a purpose to it? You could just not use it.

This. If you did not ask for your own public IP block, then ignore it. Though it does likely mean you are overpaying for your internet service.

[JaredBusch]

@mroth911 said in ER-3 -Comcast Fiber:

so if i configure any ethernet port on a computer connected to the network i will be about to use the public ip ?

No, that is not how that works and is not something I care to try and explain.

[scottalanmiller]

@mroth911 said in ER-3 -Comcast Fiber:

so if i configure any ethernet port on a computer connected to the network i will be about to use the public ip ?

You can do that, but you probably don't want that. That's going to be really limiting and really not add any benefit if those machines are not servers. If this was for a DMZ, it would be different.

[mroth911]

I have 29 static ip address. that i have public facing servers.

[scottalanmiller]

@mroth911 said in ER-3 -Comcast Fiber:

I have 29 static ip address. that i have public facing servers.

You are trying to use Comcast to host publicly facing servers?

[mroth911]

yes

[scottalanmiller]

@mroth911 said in ER-3 -Comcast Fiber:

yes

Oh, so this changes eveything.

[scottalanmiller]

Okay, so is this ALSO your office, or is this ONLY hosting servers?

[mroth911]

Both....

[JaredBusch]

@scottalanmiller said in ER-3 -Comcast Fiber:

Okay, so is this ALSO your office, or is this ONLY hosting servers?

he said he wants 10.0.0.1 on eth1. SO I assume Office.

[scottalanmiller]

If this is both, I'll just assume it is, then you want to make another network for the servers that is a DMZ. Your non-servers (office) will be in a LAN. The public IP block you got will be your DMZ.

[JaredBusch]

@mroth911 said in ER-3 -Comcast Fiber:

Both....

Pay someone that knows what they are doing.

[mroth911]

OK with the configre of Jared i got it working.where do i put the dmz..?

[scottalanmiller]

@mroth911 said in ER-3 -Comcast Fiber:

OK with the configre of Jared i got it working.where do i put the dmz..?

DMZ would be another port entirely. This complicates the setup a bit, but isn't horrible. If you have ETH0 set for your WAN, and ETH1 for your LAN (e.g. 10.x.x.x) then ETH2 will be your DMZ.