A client has a Snapgear 720 and it has stopped accessing the network at their main office. From what they told me, it started several days ago when the internet would stop working and then start working after a few minutes. This repeated several times an hour. Now there is no internet at all.
They have two remote offices with Snapgear 560 that are setup as VPN. They also have a VoIP phone system. When the internet goes down at the main office, the VPN connections and Internet are still good at the remote offices, but the phones at the remote offices are down (not at the main office).
I was on the phone with Snapgear support for over two hours and nothing was resolved.
The LAN address of the router is 192.168.0.1
From a workstation, I am able to ping Google and external IP addresses.
I connected a workstation directly to the router LAN port and it was still not able to connect (a couple of times it connected but very slow and was not able to download all the web page items).
The system log has many errors that begin with:
"proxy80: Unable to connect to http://www
..." www is followed by the address it tried to connect to.
One thing I noticed is that under Access Control only Internet is enabled and it has a "Web Proxy Port" set as 81. I'm not sure if this is an issue (it is set to 81 on the remote Snapgear devices as well).
As far as I know, nothing was changed on the network. I am not familiar with their setup so I am kind of flying blind here.
My understanding is that their phones are on a 192.168.1.0/24 subnet. There is a Snapgear 560 at the main office connected to the E port of the 720.
The E port is configured as:
LAN, Static, 192.168.1.1, Gateway: 192.168.1.2, DNS: 192.168.1.2.
Needless to say, this is critical. I don't know what other information is needed to assist with the resolution.
BTW, RDP also works fine. They have a Windows 2003 R2 server. It is a DC and a terminal server.