[c-nsp] Annoying POPups

[Rocker Feller]

Hi,

I have a group of ips on my network a /24 that when browsing are getting an
annoying popup across the browser.

This strange behaviour started last week when the same block could not
access any http site.

Later the problem resolved itself so I thought till today.

Now the block can browse but the annoying pop up pops everytime the page is
refreshed and browsing is annoyingly.

Any advise assistance on how I can trace the loophole on my network and
rectify will be much appreciated.

Rocker.