Actually, those promiscuous sub-VLANs are bad news. I got a virus from one that turned my hard drive into a floppy.
t >-----Original Message----- >From: [email protected] [mailto:full-disclosure- >[email protected]] On Behalf Of Giles Coochey >Sent: Wednesday, March 21, 2012 8:49 AM >To: [email protected] >Subject: Re: [Full-disclosure] is my ISP lying or stupid? > >On 2012-03-18 16:09, James Condron wrote: >> >> The routers of an ISP are sorta DHCP in the sense that the IPs are >> dynamic- DHCP really works as one network whereas an ISP switch will >> have a series of /30 vlans for obvious reasons. Getting an IP and >> connection is more complex than that but already we're down to a >> series of routers. >> >No, they'd use private VLANs with the default router in a promiscuous sub- >VLAN. That way they won't have to waste 4 IPs for every customer. >Customers with multiple IPs can be put in community sub-VLANs, if they pay >for it. >Networking works very differently within Service Provider networks. A lot of it >is technology that makes itself look like other technologies you might be >familiar with, but what is happening behind the scenes is actually completely >different. > >Just thought you might like to know. > >_______________________________________________ >Full-Disclosure - We believe in it. >Charter: http://lists.grok.org.uk/full-disclosure-charter.html >Hosted and sponsored by Secunia - http://secunia.com/ _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
