Plusnet have been in touch to say:
"We'll be making a change to block incoming traffic on ports 53, 111, 135, 137, 138, 139, 445, 515, 1080, 1433, 3128, 3306, 6000."
It's all about stopping 'bad' traffic to hacked routers/networks. I'm generally not a fan of ISPs doing this sort of thing because it's only one step away from censorship. However, I suppose the reality is that people aren't especially good at securing their home networks, so quite a few of them are vulnerable to basic attacks.
Comments
Yes i do agree with you. Some sorts of ISP's are doing the same thing as they might get some benefits while doing this sending to your networks more and more queries which can be the cause of your system hanged.