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How to Fix “SSL Negotiation With License Manager Server Has Failed” on an Old SonicWALL Device

DESCRIPTION: Older firmware versions are not able to contact to the new HTTPS License server due to an updated certificate on our backend.The new certificate is a 2048 bit certificate and uses a secure Verisign certificate. (new IP 204.212.170.143) RESOLUTION: Resolution A Upgrade at least to the latest General Release (i.e. 6.2.5.3, 6.2.7.1, 5.9.1.7) Resolution B (workaround) in […]

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What’s The Difference – VPN IPSEC Tunnel Mode and Transport Mode

IPSec’s protocol objective is to provide security services for IP packets such as encrypting sensitive data, authentication, protection against replay and data confidentiality. As outlined in our IPSec protocol article, Encapsulating Security Payload (ESP) and Authentication Header (AH) is the two IPSec security protocols used to provide these security services.  Analyzing the ESP and AH protocols […]

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Create A DHCP Lease Scope Dedicated For SonicWALL GVC Clients.

DESCRIPTION: This article describes how to create a DHCP dynamic lease scope without binding it to any interface of the SonicWall UTM appliance. Such a lease scope can have an IP address range not configured on any interface of the SonicWall. This would be helpful in environments where the administrator requires GVC users to have […]

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No Internet Access When Connected To SonicWALL Global VPN Client (GVC)

 03/26/2020  original post: https://www.sonicwall.com/support/knowledge-base/no-internet-access-when-connected-to-global-vpn-client-gvc/170505862769521/#:~:text=CAUSE%3A,Internet%20Connection%20for%20web%20traffic. DESCRIPTION: This article explains troubleshooting scenarios where users connected to Global VPN Client can access the VPN networks, but not the Internet. CAUSE: This issue could be caused if either of the modes of using GVC; Split Tunnel and Tunnel All (Route All VPN) are not configured correctly. Split Tunnel: This is the most common deployment. […]

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How to configure the SonicWALL to mitigate DDoS attacks.

How to configure a SonicWALL firewall to mitigate DDoS attacks.  Title How to configure the firewall to mitigate DDoS attacks. Description A Distributed Denial of Service (DDoS) attack is an attempt to make an online service unavailable by overwhelming it with traffic from multiple sources. There are three types of DDoS attacks.  Layer 3,Layer 4 DDoS attacks and […]

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WHERE ARE THE USER ID AND PASSWORD STORED FOR PALO ALTO GLOBALPROTECT CLIENT?

WHERE ARE THE USER ID AND PASSWORD STORED FOR PALO ALTO GLOBALPROTECT CLIENT? https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000Cm6MCAS Resolution The User-ID and password are stored on the client machine when “remember me” is used by an administrative level account. On a Windows system using GP 4.0 and earlier, the information is stored in the registry at:  HKEY_CURRENT_USER\Software\Palo Alto Networks\GlobalProtect\Settings\LatestCP […]