Something's blocking Internet access, but what?
Posted on 2013-01-10
20-user LAN running of a SBS2003 DHCP server.
Most pcs connect via cabled network and get their IP from the server. No problems whatsoever with these, but since Monday, for some reason, those users who connect via wireless have lost connection to the Internet. Their LAN access has been fine but any attempt to browse websites was returning "This page cannot be displayed". On running Ipconfig each time, their dynamic DNS was 192.168.0.18, ie the server, and I resolved the Internet access issue by giving them static DNS of 18.104.22.168.
But I'm conscious this isn't getting to the root of the problem and that sooner or later, someone's going to walk in with a new laptop or an Apple i-something (sorry, not a fan!) and going to have to call me in to set this static DNS value, which will be a right pain.
So I want to get to the root of the problem.
Someone tells me it's symptomatic of a firewall having been introduced to the network somewhere..... as the wireless devices are making a call to the server but not getting through.
Maybe just needs a good old server re-boot?