Yes, I understand why they gave me a /24 but with a /24, all it takes is for somebody else on the same subnet to accidentally (not intentionally or maliciously for obvious reasons) take my static IP and thus blow me out of the water without affecting them too much. I had this happen once. With a subnet between /24 and /30, they'd notice when their accidentally typo-ed IP address didn't work because it didn't match their gateway info.
-- Reality Artisans, Inc. # Network Wrangling and Delousing P.O. Box 565, Gracie Station # Apple Certified Consultant New York, NY 10028-0019 # Apple Consultants Network member < http://www.realityartisans.com> # Apple Developer Connection member Cell: (646) 327-2918 # Ofc: (212) 369-4876
PPPoE is used for authentication. If you have a static IP, they know who has it and you don't need authentication. PPPoE would be the termination point for the address, but since it will reside on your firewall, the modem needs to bridge the dsl network
to the Ethernet network on the public side if the firewall
They give you a /24 because they'd be burning up more IPv4 addresses giving you a smaller subnet. Other static IP customers use addresses in that subnet along with you.
Jamie Montgomery | Comporium Network Facilities Engineering | Engineering Associate II www.comporium.com jamie.montgomery@xxxxxxxxxxxxx
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No, the DSL modem is bridging, not routing. I've been assigned two static IPs (although they've given me a /24 net mask!!!) and my firewall is assigned one of them. The firewall is connected directly to the DSL modem by Cat6 patch cable. The other IP
is unused (I use it for testing VPN configurations).
I'm not sure but since the Broadxent Briteport is a PPPoE modem, I assume PPPoE. But the tech says that's not correct (WTF?). And he can't explain what they use. Sigh.
--
Reality Artisans, Inc.
# Network Wrangling and Delousing
P.O. Box 565, Gracie Station
# Apple Certified Consultant
New York, NY 10028-0019
# Apple Consultants Network member
< http://www.realityartisans.com>
# Apple Developer Connection member
Cell: (646) 327-2918
# Ofc: (212) 369-4876
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