Tag: Troubleshooting

Tools: How to identify and clean up Windows computers infected with malware and bots

Solution: Follow the steps below in the given order: Step 1: Disconnect the computer from the network and notify the user that the computer cannot be re-connected until all malware has been successfully removed. Step 2: Find out if the user is familiar with the destination or action that the malware or bot is trying … Continue reading Tools: How to identify and clean up Windows computers infected with malware and bots

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TMG Forefront 2010: Re-enabling Configuration Change Tracking Description

If you check the box Do not show this prompt again you will, of course, not be prompted to enter descriptions for applied changes in the future. If you later decide you’d like to have this feature back, highlight the Troubleshooting node in the navigation tree and select the Change Tracking tab in the main window. In the Tasks pane click Configure Change Tracking and check … Continue reading TMG Forefront 2010: Re-enabling Configuration Change Tracking Description

TSHOOT: VPN L2TP not working on some Windows machines

Problem: Client behind NAT devices are unable to connect to VPN L2TP Solution: Modern Windows devices do not support L2TP/IPsec connections when the Windows computer or VPN server are located behind a NAT. If the Windows VPN client fails with Error 809 when trying to establish a VPN connection to an MX located behind a … Continue reading TSHOOT: VPN L2TP not working on some Windows machines

Fortigate: Disable Telemetry (Endpoint Security) for Client VPN Users

blah blah Solution 1 You can recreate the VPN and on Step 3, Unselect Allow Endpoint Registration Solution 2 Disable Endpoint Security Enable the feature first so the option will show up on the firewall. Under System -> Feature Select -> Security Features -> select Endpoint Control. Once Feature is enabled, Forticlient Profile will be … Continue reading Fortigate: Disable Telemetry (Endpoint Security) for Client VPN Users

Fortigate: New FortiOS Upgrade Path Tool

Early this week, Fortigate has removed the Upgrade Path table on the Fortigate Cookbook website gaining reaction from many of us. I spend a good number of minutes trying to look around where I can find the table I used to find in just a couple of google searches and clicks. The Upgrade Path tool … Continue reading Fortigate: New FortiOS Upgrade Path Tool

Sonicwall GVC VPN: Unable to connect to VPN. Error: “Packet length mismatch with interface MTU”

I had a client who was unable to connect to the Sonicwall VPN via GVC (Global VPN Client). Packet capture showed initial inbound traffic to the Sonicwall from Client is being dropped. Logs as below: 50 03/30/2016 14:16:06.912 X4*(i) -- VPN.CLIENT.IP.HERE SONICWALL.WAN.IP.HERE IP UDP 500,500 DROPPED 60[60] 51 03/30/2016 14:16:06.912 X4*(i) -- VPN.CLIENT.IP.HERE SONICWALL.WAN.IP.HERE IP … Continue reading Sonicwall GVC VPN: Unable to connect to VPN. Error: “Packet length mismatch with interface MTU”

Fortigate: Log Monitoring and Email Alerting via Fortianalyzer

Using the logs sent by your Fortigate Firewall to your Fortianalyzer, you can set up an monitoring/alerting function for any logs or events captured. This is very helpful in monitoring critical systems and functions such as interface flaps or VPN IPsec Issues. You can monitor any events as long as it is logged.  In this … Continue reading Fortigate: Log Monitoring and Email Alerting via Fortianalyzer

Fortigate: Set up the Health Link Monitor

Health Link Monitor (as known as dead gateway detection) is used to for multiple WAN setup to monitor the status of the links and force a failover if necessary. Set up the Health Link Monitor and configure ping servers The following will ping a server of your choice, and if it stops receiving replies at … Continue reading Fortigate: Set up the Health Link Monitor