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Asked by peteryau in Anti-Virus, Networking Hardware Firewalls, Networking Security Vulnerabilities
The branch office was equipped with SOHO firewall behind the ISP router for few years and working fine and had never change the firewall configuration. In these two weeks we found the internet connection disconnected several times a day and the ISP router and modem has been replaced and still got the problem. I found out this is not the ISP router nor modem problem because I can ping the ISP router from outside when disconnection occured.
All internal PCs are installed with Symantec anti virus corporation v10.1 or endpoint protection v11.
I touch the surface of firewall and found no heating problem.
The firewall drop connection in a very short interval and all logs are clear when it can be connected again. I also found the firewall did not reboot because the VPN connection resume very fast . (if for rebooting, it will takes over 3 minutes to establish the connection). I notice the connection suddenly dropped because our terminal server session through VPN suddenly dropped off. But it can be resumed after reconnect using the terminal client again.
Anyone could help me on troubleshooting?
20091118-EE-VQP-93 / EE_QW_2_20070628