Network Address Translation
This article assumes you have an understanding of computer networking basics. Network Address Translation has several advantages but its primary goal is to allow a single Internet IP address to be...
View ArticleThe Routing Table
Welcome to part 2 in a 3 part series of articles about routers and routing . If you have arrived here directly through a search engine you may wish to read Part 1 – How Does a Router Work? first. Here...
View ArticleHow IP Routing Works
Welcome to the final part in a 3 part series of articles about routers and routing . Previously I wrote about how routers work and the routing table in parts 1 and 2 respectively. I am now going to...
View ArticleTypes Of NAT Explained (Port Restricted NAT, etc)
All types of NAT fall into two categories; Static NAT and Dynamic NAT. Static NAT is where administrators manually create and maintain the NAT mappings and is usually associated with inbound types of...
View ArticleSymmetric NAT and It’s Problems
This article continues on from where Types of NAT left off. A symmetric NAT applies restrictions exactly the same way as a port restricted cone NAT but handles the NAT translation differently. All...
View ArticleVPN Passthrough and How It Works
VPN Passthrough is a feature of routers which allows computers on a private network to establish outbound VPNs unhindered. VPN passthrough has nothing to do with inbound VPNs, only outbound ones. The...
View Article“A Required CD/DVD Device Driver Is Missing” For USB Installs
You receive the error “A required CD/DVD device driver is missing” when installing Windows 7 or Windows 2008/R2 from a USB device. Furthermore if you browse to install drivers you will see that your...
View ArticleHow To Fix Boot/BCD 0xc000000f Error Windows 7
This article is specific to Windows 7 but similar errors occur on all versions of windows. NOTE: You will need your Windows 7 DVD or a USB with the recovery console installed. IF USING A USB STICK...
View ArticleDNS Scavenging
Most of you reading this will already know what DNS Scavenging is. For those of you that don’t it is a feature of Windows DNS servers which allows you to automate the deletion (scavenge) of outdated...
View ArticleBackup to URL: The underlying connection was closed: Could not establish...
When performing an SQL backup using the feature “backup to URL” in, you receive the error: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel or...
View ArticleEWS – How to fix The “UserId in the folder permission at index [xx] is invalid”
This article specifically address a problem I found when trying to disable archiving on specific folders in Exchange by following Prevent Notes, Calendar and Tasks from getting archived by using EWS...
View ArticleHow IP Routing Works
Welcome to the final part in a 3 part series of articles about routers and routing . Previously I wrote about how routers work and the routing table in parts 1 and 2 respectively. I am now going to...
View ArticleTypes Of NAT Explained (Port Restricted NAT, etc)
All types of NAT fall into two categories; Static NAT and Dynamic NAT. Static NAT is where administrators manually create and maintain the NAT mappings and is usually associated with inbound types of...
View ArticleWhat you need to know about symmetric NAT
This article continues on from where Types of NAT left off. A symmetric NAT applies restrictions exactly the same way as a port restricted cone NAT but handles the NAT translation differently. All...
View ArticleVPN Passthrough and How It Works
VPN Passthrough is a feature of routers which allows computers on a private network to establish outbound VPNs unhindered. VPN passthrough has nothing to do with inbound VPNs, only outbound ones. The...
View Article“A Required CD/DVD Device Driver Is Missing” For USB Installs
You receive the error "A required CD/DVD device driver is missing" when installing Windows 7 or Windows 2008/R2 from a USB device. Furthermore if you browse to install drivers you will see that your...
View ArticleHow To Fix Boot/BCD 0xc000000f Error Windows 7
This article is specific to Windows 7 but similar errors occur on all versions of windows. NOTE: You will need your Windows 7 DVD or a USB with the recovery console installed. IF USING A USB STICK...
View ArticleDNS Scavenging
Most of you reading this will already know what DNS Scavenging is. For those of you that don’t it is a feature of Windows DNS servers which allows you to automate the deletion (scavenge) of outdated...
View ArticleBackup to URL: The underlying connection was closed: Could not establish...
When performing an SQL backup using the feature “backup to URL” in, you receive the error: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel or...
View ArticleEWS – How to fix The “UserId in the folder permission at index [xx] is invalid”
This article specifically address a problem I found when trying to disable archiving on specific folders in Exchange by following Prevent Notes, Calendar and Tasks from getting archived by using EWS...
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