Sonicwall Global VPN Client: Sonicwall GVC unable to connect through certain ISPs

In some cases, Sonicwall GVC is unable to connect to select ISPs/Networks, where it is proven working elsewhere (3G Tethering or other ISPs). Usual troubleshooting and things to look at is if VPN IPSec Passthrough is enabled on the home modem or router. There is another troubleshooting step that is worth trying, which is to … Continue reading Sonicwall Global VPN Client: Sonicwall GVC unable to connect through certain ISPs

Cisco: Password Recovery and Factory Reset of Cisco Catalyst 2960/2900-series

Password Recovery Procedure Not surprisingly, the instructions for Cisco Password Recovery Procedure are found readily on the internet via any search engine. On this page, one merely needs to scroll down to the particular product series and click the respective link. We are interesting in the documentation for Password Recovery of the Cisco Catalyst Layer 2 fixed configuration … Continue reading Cisco: Password Recovery and Factory Reset of Cisco Catalyst 2960/2900-series

CheatSheet: Brocade Commands

Here is just a reference for people to have a quick look and search. The list of  Brocade SAN Switch CLI commands() version Kernel:     2.6.14.2 Fabric OS:  v7.1.0c Made on:    Tue Apr 16 18:06:01 2013 Flash:        Wed Dec 11 16:18:22 2013 BootProm:   1.0.10 aaaconfig                  Configure RADIUS for AAA services ad                         Specifies all administration domain … Continue reading CheatSheet: Brocade Commands

HP / Aruba Procurve 2530/2500 Default Management IP, Username/Passwrods and Configurations

Back-up of an existing config If you are performing a backup a config from another switch, two ways of downloading the configuration is through GUI and CLI (via TFTP) via GUI: (System -> Updates/Download -> Configuration File (Highlight config name and click Download) via CLI. (you need to set up a TFTP server on a … Continue reading HP / Aruba Procurve 2530/2500 Default Management IP, Username/Passwrods and Configurations

UniFi: Run the Controller as a Windows service

Here is a useful guide from Ubiquiti with regards to running the Controller service as a Windows Service. This is essential when running a centralized controller for your APs and to make sure you contoller would run automatically after a restart rather than enabling it to run maunally.   Originally posted at: https://help.ubnt.com/hc/en-us/articles/205144550-UniFi-Run-the-Controller-as-a-Windows-service Readers will learn … Continue reading UniFi: Run the Controller as a Windows service

Tricks: Unable to access Sonicwall Management Portal? ERR_SSL_VERSION_OR_CIPHER_MISMATCH

Most modern web browser no longer support RC4 encrytion as it is officially declared unsecured by IETF memo RFC7465 published on February 2015. (See Workaround below to find an older browser to get around this error) Thus if RC4-Only encryption is enabled in SonicOS, it would block access to the Firewall Management Portal and will display "err_ssl_version_or_cipher_mismatch" error … Continue reading Tricks: Unable to access Sonicwall Management Portal? ERR_SSL_VERSION_OR_CIPHER_MISMATCH

Cisco Switch Selector / Model Finder Tool

Few days ago, I shared a link for HPE Switch Selector / Model Finder tool, to help finding an appropriate HPE switch model based on your requirement. My client preferred a Cisco, so I have to find an appropriate Cisco model for them and found a similar tool to that of HPE. https://www.cisco.com/c/dam/assets/prod/switches/cisco-switch-selector-how-to/index.html#/ Check it … Continue reading Cisco Switch Selector / Model Finder Tool

HPE Switch Selector / Model Finder Tool

While looking around for a switch model for one of my clients, I found an interesting page to find an appropriate HPE switch model based on your requirement of Routing/Switching, Port Type, Uplink SPeed, Features (POE, etc) http://h17007.www1.hpe.com/us/en/networking/products/switches/switch-selector.aspx#.WWNRFOn-uM8 Check it out! There is a similar tool too available for Cisco.

Tools: Flow Trace in Fortigate

The flow trace feature in the FortiGate units allows you to trace to flow of a packet through the firewall you are consoled to. It allows you to see if the packet is being denied for some reason or being allowed by a particular policy. You can also see what NAT rule and routing is … Continue reading Tools: Flow Trace in Fortigate