[TriLUG] Frontier doing packet inspection?

[Jason Sullivan]

On Sat, Dec 7, 2013 at 12:47 PM, Jeff The Riffer <riffer at vaxer.net> wrote:
> On Sat, 7 Dec 2013, Joseph Mack NA3T wrote:
>>
>> How does Frontier even know I got a "404 page not found" without doing
>> packet inspection?
>
>
> DNS interception. TWC does the same thing, as other ISP's do.
>
> I don't use my ISP's DNS server. TWC not only does interception on DNS
> queries but also had a lot of DNS outages for me years ago. Easier to just
> run bind on a local linux box. That way I never have to worry about this
> sort of shenanigans.
>
> Also gives you the advantage of being able to blackhole any specific zones
> you want for your entire home network (i.e. known malware subnets,
> advertising networks, whatever)

That sounds great, but I don't think you can get a 404 message from a
machine you can't actually resolve to a host.

-- 
Jason Sullivan
jason0x21 at gmail.com