You reboot a VM and 2 hours later you realise there’s no network connectivity on that VM.
You try to open the Network and Sharing Center console but the window just hangs and everything seems to be chugging along very slowly.
I’ve experienced a number of different scenarios where network adapters go AWOL in a VM – usually caused by a guest (Windows Update) or VM hardware update. For the latter it is best practice to update the VMware Tools first before upgrading the hardware version.
Continue reading Troubleshooting a Broken Network Adapter in vSphere ESXi
In this article I will talk about some recommended security configurations, new features I have come across in the new AsyncOS 9.0/9.1 series and more about the Advanced Malware Protection (AMP) features introduced in AsyncOS 8.5.
If you haven’t already, have a look at part 1 and part 2 of this series
Continue reading Cisco IronPort E-mail Security Appliance Best Practices : Part 3
BitTorrent Sync is an application based around the peer-to-peer protocol. You can use it to share files between friends and family or simply use it as an efficient way to transfer files within a LAN.
In this article I will briefly go over the steps I went through to Sync my camera photos and WhatsApp media folders from my Android smartphone to my Synology DS215j NAS.
The below guide should also help to get it working on an iOS device. I believe iOS also supports auto syncing just as the Android app does (i.e., you don’t need to have the app open for it to sync).
Continue reading Backing up Media from Android to Synology NAS using BitTorrent Sync
This post will be a collection of thoughts and my own experiences when migrating from a physical C160 to a virtual C100V appliance. Other IronPort ESA P2V appliances may be similar so it’s worth reading on!
Continue reading Migrating from a Physical IronPort ESA to a Virtual IronPort Appliance
In this article I will briefly discuss some content filters that I think could come in handy for IronPort ESA users.
Some of these can also be useful for outbound mail – for example, you should detect and notify when executables are sent outbound as it could be indicative of an internal outbreak which you obviously want to know about.
Continue reading Cisco IronPort ESA – Useful Content Filters
Just in case you’re reading this and haven’t seen the IronPort x60 replacement programme e-mail – here goes
Continue reading Cisco Hardware upgrade for x60 Series Appliances
You get a ‘Violated unidirectional connection’ message in the logs with UDP traffic even if there are rules with ‘ANY’ and ‘ALLOW’ in the rule base.
In my case the problem was that I could not PXE boot clients (using Windows Deployment Services or WDS)
Continue reading Check Point: Violated Unidirectional Connection with UDP Traffic