What you are saying sounds good, but what is happening dosen't make sense.  I understand that if you are cacheing content, letting DNS servers know about your cache is important.  This was a problem with a company I used to worked at.  We wanted to use Akamai, but the majority of our customers used outsorced dial-up and we didn't control the DNS, so Akamai wasn't a benefit to our customers.

But Ben was port scanned!  I can see no reason to scan every single port on a host that appears to be a DNS.  I don't understand how sending ICMP_ECHO packets to port 31337 (Back Orifice) can help DNS?


Dusty

P.S. - I looked on www.digisle.com and there is no listing for a Unix position. If you have more information I would be interested.




> Ok, sorry to be so vague, but due to legal
> issues between Akamai and Digital Island
> I can't be too specific on how this all
> works.  What I can tell you is this.
> 
> We have over 2000 servers set up in clusters
> around the world.  We cache our customers content
> on these servers, however we do not store all our
> customers content on all the servers.
> 
> When a request is made for content, (streaming, data, 
> what ever our customers have us host) our intelligent network
> looks where the request is coming from, how many other people
> are requesting the same info, which content servers data should
> be pushed out to, etc....
> 
> This puts our customers content closer to the individual
> and stores it.  Along with all this, networks are being 
> mapped to find the shortest path to the person requesting
> the information.  This technology is what we call our
> "footprint" technology.
> 
> We have lots of customer that range from news and media
> organizations, tech companies, entertainment and financial
> institutions.
> 
> Yes, we do deliver content globally faster than anyone
> else.  Our closest competitors are Akamai, and Exodus.
> Cable and Wireless just bought us up, which has given us
> access to our own global networking, we no longer have to
> rely on leased lines from other national and international
> telecoms.
> 
> I can't get into any more detail about how it all works, it
> is very proprietary.  If you don't accept this as a good
> answer, all I can say is "oh well".
> 
> 
> BTW, we are hiring now for an associates UNIX position
> here in HI, and other UNIX positions world wide.
> You can go to our site www.digisle.com for  more
> info.
> 
> > -----Original Message-----
> > From: Dusty [mailto:dusty@sandust.com]
> > Sent: Monday, November 12, 2001 11:02 AM
> > To: Linux & Unix Advocates & Users
> > Subject: [luau] Re: [luau]Request for off line security help
> > 
> > 
> > I was just looking through Ben's logs and this makes no sense.  
> > What would a company gain from port scanning a customer.  Digital 
> > Island scanned all 65000 ports!  How does this do anything except 
> > slow down the network with useless traffic?  
> > 
> > In their response to him they say he is runing a DNS server, and 
> > they ping his DNS to improve performance.  How does pinging his 
> > DNS improve performance?
> > 
> > 
> > Dusty
> > 
> > "Linux is for people who hate Windows. BSD is for 
> > people that love unix."
> > 
> > ---
> > You are currently subscribed to luau as: thecomputerguy@hawaii.rr.com
> > To unsubscribe send a blank email to $subst('Email.Unsub')
> 
> ---
> You are currently subscribed to luau as: dusty@sandust.com
> To unsubscribe send a blank email to $subst('Email.Unsub')

"Linux is for people who hate Windows. BSD is for 
people that love unix."