Got a bizarre one.
Got a client with 8 sites. They all VPN to each other linking them together.
The other week, the client told me that computers on the network couldn't go to some websites. Basically all computers could only go to google, they could search google, but once they click on a result, it doesn't navigate at all. I thought it was malware straight up so I started looking at the hosts file, proxy settings, IP settings and ran a few antimalware scans - all came back clean. The client told me they rebooted the router but I thought I'd try it from my end (via the interface)...Rebooted and all worked fine.
This week I've had 3 calls from 3 of the sites saying that they all got the exact same problem...I've logged in remotely and I confirm this. They can all browse google but nothing further. I noticed one of the physical sites allowed me to get in to 1 or 2 results here and there, but the majority failed either giving a blank white screen as if its trying to load, or just sitting at the search results. I also tried another browser and my personal laptop - same problem.
The only thing I can think of is that the routers are stuffed - It's just incredible that 3 have gone within 4-5 days of each other. They are Cisco RV042 routers and they have been in use for around 3-4 years.
So yesterday, I took one of the problematic sites out of the VPN loop (as it wasn't required anymore) and took the modem out of bridge mode and had it act as modem/router. All worked perfectly straight away.
I'm probably answering my own question here...I'm just gobbed smacked that this has all happened at once plus the client probably thinks it's got something to do with me putting in a new SBS server for them.
Can anyone think of anything else that I haven't covered? Thanks