How to RDP over an SSH tunnel
You can use this trick to access your home PC from a remote PC (like your work PC). Instead of using Teamviewer or other similar software. You can setup up your ownRead More…
iptables -A INPUT -m conntrack –ctstate ESTABLISHED,RELATED -j ACCEPT
Firewalls usually block all inbound connections (unless we have a port forward setup, or the traffic is return traffic). Also firewalls usually allow all outbound traffic (unless we are in a veryRead More…
Computer Networking – End to End Argument
Rule of thumb: when implementing a function or program, you should implement it at the end points. Quote: End-to-end connectivity is a property of the Internet that allows all nodes of the network toRead More…
Buffer Sizing in Internet Routers
Here is a paper by Yashar Ganjali Gavgani about Buffer Sizing and how it works in Networks. Its really easy to read and understand and gives you a full sense of theRead More…
SoftEther: the best VPN: How to set up Client to Site VPN without Port Forward
Once I learned about SoftEther VPN, I realized I was missing out on a lot. In this article I will show you how to setup a Client to Site VPN without needingRead More…
NETGEAR & HP – Making Two Layer 2 VLANS from 1 Network/Subnet. Separating your Broadcast domain.
INTRO If you would like to separate your broadcast domain to 2 vlans (or more) then this article is for you. This article builds off of the foundation discussed in this LayerRead More…
SNMP MIBS – Netgear Switch Storage All – Common Mibs – Observium Mibs – All Mibs – As of 2016-06-06
SNMP MIBS – Netgear Switch Storage All – Common Mibs – Observium Mibs – All Mibs – As of 2016-06-06 This is my collection of MIBS. One folder has all of themRead More…
How fast do DNS enteries apply?
How fast do DNS enteries apply? For new DNS enteries, you can see the effect immediately (and sometimes not). test.infotinks.com which was a cname change to www.google.com (so everytime i went toRead More…
NOTE on DNS A Names with Round Robin (multiple A names)
NOTE on DNS A Names with Round Robin (multiple A names) ################################################ If you have DNS items like so: Multiple A names point to different IPs. This will give you round robinRead More…
NOTE: Networking Switch/Router/Firewall – L2,L3,L4 Headers – and where they change – OSI 7 layers – and CEF
Networking Switch/Router/Firewall – L2,L3,L4 Headers – and where they change – also a quick look at OSI 7 layers (simple) #################################################### * http://www.inetdaemon.com/tutorials/information_security/devices/firewalls/stateful_vs_stateless_firewalls.shtml#sthash.vO5Num5c.dpuf * http://www.webopedia.com/quick_ref/OSI_Layers.asp WHAT HAPPENS AT DIFFERENT LAYER ################################# Basic IP communicationRead More…