![]() To begin the configuration of the VPN policy on the ZyWALL/USG router, please open a web browser and access the Zyxel routers WebGUI. This walkthrough will help configure the VPN setup on the IPSecuritas VPN client (version 4.6.1). Third party IPSec software is required to establish the VPN connection as current operating systems lack a built-in IPSec client. This guide will reference the IPSec protocol to establish a secure VPN tunnel between external hosts (users connected to the internet outside the company network structure) and the ZyWALL router. There multiple types of VPN protocols/technologies, that can be used to establish a secure link to company network, L2TP, PPTP, SSL, OpenVPN, etc. A remote access VPN (client-to-site) allows employees who are traveling or teleworkers, secure access to company network resources. VPNs are used to transport traffic over the internet of any insecure network that uses TCP/IP communications. OverviewĪ VPN (virtual private network) provides a secure communication between sites without the expense of leased lines. Before you get too concerned though, we’re here to help.This guide will assist in the configuration of the IPSecuritas VPN Client (version 4.6.1) for VPN connectivity with Zyxel's Next-Gen ZyWALL USG routers. This article will work through some common issues and resolutions to attempt to fix and troubleshoot various problems encountered with macOS Big Sur.Įvery year, shortly after Apple rolls out a major macOS update to the general public, you often find a lot of people complaining about issues with the newest software version. Well, this year is no exception in that regard, as several users have already reported various problems relating to macOS Big Sur failed downloads, Wi-Fi issues after updating, battery drain, and more. To make things easier for you, we have compiled a list of the most popular issues according to the community. Issues with macOS Big Sur Download & Installation If you’re one of those unlucky Mac users who’re affected by this recent update, simply read on to learn how you can troubleshoot and fix some of the most common macOS Big Sur problems that have been reported so far.īefore continuing, you’ll want to make sure you have a full backup of the Mac available with Time Machine or your backup method of choice to prevent any data loss. Several users have reported that they’re unable to download the macOS Big Sur software update or that the download is very slow. Although this is likely an issue when servers are overloaded, there are multiple other reasons why you can’t download the newest software. If you’re getting an error that states “Update not found – the requested version of macOS is not available” when trying to update your device from System Preferences -> Software Update, you can visit the link to download from the Mac App Store and then initiate the download via the Software Update panel afterwards. On the other hand, if you’re getting an “Installation failed – an error occurred while installing the selected updates” error message, it’s probably because Apple’s servers are busy due to the number of people trying to update their devices at the same time. The best thing you can do is just wait for a while and initiate the update again. ![]() ![]() ![]() While you wait, you can keep an eye on Apple’s System Status page to check for issues with macOS software update services. Some users have also reported to have received another error message stating “The package is missing or invalid” when attempting to download or upgrade to macOS Big Sur.
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