Category Archives: ISP

IPv6 Subnetting – You and your customer

There’s this great debate in the IPv6 world about how to chop up your allocation into assignments for your customers. Typically, most ISPs are being handed a /32, and general guidelines say to allow for a /48 per DSL/leased line/cable customer. However a lot of people are asking, why not a /64?  Quoted below is [...]

Just how dumb are BT Wholesale?

They tried to requote us for their 21CN broadband platform, assuming we take it in London as they wanted to charge us 50p per meter all the way from Manchester to Belfast (totaling some £250k). After carefully examining our current installation they decided that we should replace our pair of 34Mb pipes with a single [...]

BT Fail :: Part 2

A new level of fail from our friends at BT Wholesale. They have actually willingly provided proof that they do not read fault reports the first time around: Yes.. that is a grand total of 43 seconds from reporting the fault to BT Wholesale rejecting it. This was even reported via KBD, which lets you [...]

BT Fail :: A new level of failure

Customer complains of a fault. I diagnose and determine that the customer is doing nothing wrong, and it’s probably a line fault. BT’s response is near instant, lambasting me for reporting what is clearly not a BTW (BT Wholesale) fault. An entire day later, they update it to say that there’s a fault with the [...]

Yet Another Ignorant ‘Your ISP is screwing you’ article

I hate these articles. They’re always written from the perspective of a consumer who knows some of the buzzwords but doesn’t actually bother to take the time to understand any of it or the technology. Bandwidth Throttling One oft-protested behavior of various ISP’s is the throttling – that is, limiting – of bandwith at certain [...]

IPsec VPNs for Mikrotik RouterOS

It’s unfortunate that the Mikrotik RouterOS manual on IPsec is not great – it’s sorely lacking in details  and good examples, and what examples it does have are not well explained. Recently I had to setup several Mikrotik RouterOS to ZyXEL VPNs and through I would document how it’s done.

ISP fined $32 million for helping sell illegal fake goods

In this article, it’s reported that Louis Vuitton – a fashion designer – has sued and won $32 million US from an ISP, Akanoc Solutions Inc, which hosted a customer who was selling forged Louis Vuitton products. This has caused uproar in the ISP community as at first glance it appears as though the ISP [...]

IPv6 Subnet Size Reference Table

More numbers than you can shake a stick at. Just to give you an idea, at the ISP level (/32) that’s 79 septillion IP addresses assigned. That number is so big I had to go look it up on Wikipedia to find out what it’s called. Every home user will have 18 quntillion addresses at [...]

Rant :: How to suck as a customer

Folks, domain names are a subscription service. That means you have to pay to keep them every so often. You don’t pay for them once and keep them forever. If it’s a .com, you most likely have to renew it every year and it’s a lot like your Time magazine subscription: If you don’t pay [...]

Spamhaus DROP list

The Spamhaus DROP list (Don’t Route or Peer) is still awaiting it’s BGP feed for network providers. So in the meantime, I’ve knocked up a little PHP script that downloads the DROP list from Spamhaus and spits out either a list of IPtables rules or a Cisco access control list. View Source: http://www.potato-people.com/code/misctools/spamhausdrop.phps Download: http://www.potato-people.com/code/misctools/spamhausdrop.tar.gz