Can you have multiple IP addresses on broadband, without a router? [comcast cable modem] [cable modem service]
Q: So a co-worker of mine told me the other day, he will pay 32.95 per month for Comcast Cable modem service, and he is able to run multiple machines on the network through a hub connected to the cable modem. Is this possible? I would take if he knows what hes talking about that would be external IP addresses, but would question Comcast cable modems that can do that? If they are internal IP addresses, they are now integrating routing functions in these things? He is not even to pay for additional IPs.
Can anyone shed some light on this for me?
Re:Multiple IPs and a DMZ. Yes.
Re:Originally posted by: guy
Originally posted by: guy
They're public IPs he's paying for.
The hub just broadcasts all the packets through each connected port, and each NIC knows which to receive.
One annoyance is that for any communications between the two nodes, the packets go through the ISP gateway first. That means latency of multiple milliseconds instead of microseconds (on a LAN).
The workaround is to setup appropriate static routes on each client.
If they're public IPs then no router is involved I assume. Why would an ISP allow this and not charge for it? Don't they all charge extra for more IPs?
A router would still be better, correct? As far as security is concerned?
Thanks to those who put in their two cents btw.
ISPs usually charge about $5 for each extra public IP you get.
A router is usually a smarter choice, unless you do want to run multiple public servers.
Re:Originally posted by: guy
They're public IPs he's paying for.
The hub just broadcasts all the packets through each connected port, and each NIC knows which to receive.
One annoyance is that for any communications between the two nodes, the packets go through the ISP gateway first. That means latency of multiple milliseconds instead of microseconds (on a LAN).
The workaround is to setup appropriate static routes on each client.
If they're public IPs then no router is involved I assume. Why would an ISP allow this and not charge for it? Don't they all charge extra for more IPs?
A router would still be better, correct? As far as security is concerned?
Thanks to those who put in their two cents btw.
Re:You can do this with Verizon PPPoE, at least in my area. You just plug multiple computers into a hub connected to the DSL modem, and just log in from each computer.
Re:They're public IPs he's paying for.
The hub just broadcasts all the packets through each connected port, and each NIC knows which to receive.
One annoyance is that for any communications between the two nodes, the packets go through the ISP gateway first. That means latency of multiple milliseconds instead of microseconds (on a LAN).
The workaround is to setup appropriate static routes on each client.
Re:Originally posted by: guy
he either pays for multiple ips or it comes in the package?
Re:i have a charter cable intenet account. i am allowed up to 3 different ip addresses. alll you need to do is plus in the hub. i am guessing that comcast does something similar.
Re:he either pays for multiple ips or it comes in the package?
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Tags: cable modem service, comcast cable modem