Purchased IPv4 Woes

Harry McGregor hmcgregor at biggeeks.org
Mon Mar 13 00:02:04 UTC 2017


This is why I moved away from static black lists years ago.  When the 
68/8 and 24/8 blocks were released and tons of networks had it blocked 
since it was "reserved" I observed and felt the pain.

My networks are small, and I rely on things such as fail2ban which auto 
remove the blocks.

I would be willing to bet that many of the network operators/admins that 
blocked your range are either not in the job any more or even dead.  No 
one in the company knows the blocks exist...


On 03/12/2017 04:51 PM, Pete Baldwin wrote:
>     So this is is really the question I had, and this is why I was 
> wanting to start a dialog here, hoping that it wasn't out of line for 
> the list.  I don't know of a way to let a bunch of operators know that 
> they should remove something without using something like this mailing 
> list.     Blacklists are supposed to fill this role so that one 
> operator doesn't have to try and contact thousands of other operators 
> individually, he/she just has to appeal to the blacklist and once 
> delisted all should be well in short order.
>     In cases where companies have their own internal lists, or only 
> update them a couple of times a year from the major lists,  I don't 
> know of another way to notify everyone.
>     I get why people are more cautious and  filter entire blocks when 
> just a few hosts are attacking/spamming them, and everyone has a 
> choice on how they want to handle these situations.  As an ISP, I want 
> to do as little filtering as possible.  I want all of my customers to 
> have access to everything possible.  If a netblock changes hands, I 
> want to give the new owner the benefit of the doubt and only filter 
> traffic if it repeats the same old behaviour.  We're all using this 
> finite space and I don't want to let the hostile minority slowly ruin 
> what's left of the ipv4 assignments.
> -----
> Pete Baldwin
> Tuckersmith Communications
> (P) 519-565-2400
> (C) 519-441-7383
> On 03/12/2017 11:40 AM, valdis.kletnieks at vt.edu wrote:
>> How do all the AS's that have their own internal blacklists find out 
>> that
>> they should fix their old listings?

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