A couple of PCs have full access to network but no internet access
yesterday we had an issue with our Sonicwall NSA240 device which in a nutshell prevented the whole school from accessing the internet for an hour or so. According to sonicwall support they had to adjust the MTU on the WAN interface, Anyway, internet access was restored to the masses.
However, since the the issue we now have 2 machines that refuse to connect to the internet. They both have all the correct info within IPCONFIG /ALL but the differences between these machines and ones that can access the internet are as follows:
No Internet PC / Internet PC
Ping Gateway NO / YES
Ping other servers YES / YES
netsh winhttp show proxy NO PROXY / NO PROXY
ARP -A Missing g/w / Has g/w info
One of the machines has since been completely rebuilt with a fresh copy of Win 7 but it hasn't made any difference.
EDIT: Both machines are in different places on the physical network.
Any help/guidance will be greatly appreciated as always.