General discussion

Locked

exactly what point to point

By hwtompkins ·
We have a local cable company that is supposed to provide a point to point network connection between two of our buildings they now tell us that they cant use IP Address in the range of our internal network because they are public IP's. They also tell us that part of our traffice will hit the internet.

This conversation is currently closed to new comments.

7 total posts (Page 1 of 1)  
| Thread display: Collapse - | Expand +

All Comments

Collapse -

exactly what point to point

by mark_morris1 In reply to exactly what point to poi ...

I would suspect that the "point to point" connection your cable company is talking about is actually just an IP connection to their backbone. If they are telling you that part of your traffic will hit the internet, then the two buildings must be far enough apart that they must rely on their internet connections to actually supply your "point to point" connection.

It would stand to reason that they couldn't use your internal IP addresses since they must be associated with an ISP if they are legal addresses and internet accessible. Most cable providers can only work within their own address ranges since most cable/IP networks aren't true ISPs.

Considering that you will want to firewall your two buildings from the internet for security reasons, it is a simple matter of implementing address translation at your firewall to accomodate whatever addressing scheme they require you to use. There are a number of fine affordable products out there for small networks that can do the tricksuch as the Cisco Pix 506 ( http://www.cisco.com/warp/public/cc/pd/fw/sqfw500/prodlit/cs506_ds.htm ) or the Nortel Instant Internet 100 ( http://www.nortelnetworks.com/products/01/cpe/ii100/ ). Though these products take a little bit of know how toconfigure and use, they are very popular, small and full featured firewalls.

I hope this helps.

Collapse -

exactly what point to point

by hwtompkins In reply to exactly what point to poi ...

The question was auto-closed by TechRepublic

Collapse -

exactly what point to point

by NetTek In reply to exactly what point to poi ...

A point-to-point connection would require a router at each end, and is capable of utilizing your internal IP address range. I believe your cable company is deceiving you. What they are trying to sell you is a Virtual Private Network, which requires more hardware and software than a point-to-point, and would connect your two sites via Internet routers that require public IP addresses. This is not a true point-to-point connection, such as ISDN or T1, that a phone company would sell you. Nor is iteven a virtual point-to-point connection, such as frame relay.

I would check with your regional Bell Operating Company, or a company like XO Communications, about using frame relay. Depending upon what you need to do, you can get connection speeds ranging from 56k to 1.5Mb, with costs varying accordingly.

If the two buildings are close, and you are not running systems that require a lot of bandwidth, I would inquire about ISDN as well.

Collapse -

exactly what point to point

by hwtompkins In reply to exactly what point to poi ...

The question was auto-closed by TechRepublic

Collapse -

exactly what point to point

by estebandelatorre In reply to exactly what point to poi ...

Point to point allways requires a router in each point. The less cost router is an NT server with 2 Nic cards, one with the "public" ip address and another with one of your "private" ip address, in each building.
To add more security to this configuration you may add some microsoft software in order to make a VPN between the 2 points. You can also have some spare cpu cycles in these machines in order to setup wins, dns or dhcp, and perhaps a file share, but no more.

IF using internet comunications:
Another outstanding solution will be a cisco Box with two lan interfaces, one for the cable modem and the other to your lan. (Cisco 1750)
But as you said...
"As part of your traffic will hit the internet", they are trying to said that aVPN connection (the only secure way to connect 2 lan's using the internet) will not allows you to access internet sites and your building at the same time. You will need 2 lines, one for internet access and another (a point to point one) to access the other building.


Good Luck

Good luck

Collapse -

exactly what point to point

by hwtompkins In reply to exactly what point to poi ...

The question was auto-closed by TechRepublic

Collapse -

exactly what point to point

by hwtompkins In reply to exactly what point to poi ...

This question was auto closed due to inactivity

Back to Networks Forum
7 total posts (Page 1 of 1)  

Related Discussions

Related Forums