Fortigate: Disabling and enabling the SIP session helper

You can use the following steps to disable the SIP session helper. You might want to disable the SIP session helper if you don’t want the FortiGate to apply NAT or other SIP session help features to SIP traffic. With the SIP session helper disabled, the FortiGate can still accept SIP sessions if they are … Continue reading Fortigate: Disabling and enabling the SIP session helper

Trick: How to copy files into Linux from Windows Machine

In Unix, you can use SCP (the scp command) to securely copy files and directories between remote hosts without starting an FTP session or logging into the remote systems explicitly. The scp command uses SSH to transfer data, so it requires a password or passphrase for authentication. Unlike rcp or FTP, scp encrypts both the … Continue reading Trick: How to copy files into Linux from Windows Machine

Fortigate: Best Practices Guide (per Topic)

This Best Practice Guideline for Fortigate is compiled from both FortiOS 5.2 and 5.4 for common issues encountered by myself and shared to everyone to ensure the most secure and reliable operation of our Fortigate units. This is updated periodically as I come across known issues and best practice recommendations. A. General Configurations  Below are … Continue reading Fortigate: Best Practices Guide (per Topic)

SPAN Configuration Examples

Configuring Simple SPAN session Make sure the destination interface is configured with command: # switchport monitor C2950#configure terminal C2950(config)# C2950(config)#monitor session 1 source interface fastethernet 0/2 destination interface fastethernet 0/3 no shut end C2950(config)#show monitor session 1 STATE SHOULD SHOW UP. Other Configuration Examples for SPAN This section includes the following topics: Configuration Example for a … Continue reading SPAN Configuration Examples

Error: vCenter Support Assistant 6.5: This type of network adapter is not supported by {0}Other Linux (64-bit)

Came across an error today on my VM when installing a Linux-based vRouter. Error says: "This type of network adapter is not supported by {0}Other Linux (64-bit)" To keep backwards compatibility with previous versions of vCenter Server, the VM hardware was set to version 8 (ESXi 5.0 and later). This choice of the OS is entirely unexpected, as … Continue reading Error: vCenter Support Assistant 6.5: This type of network adapter is not supported by {0}Other Linux (64-bit)

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