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Archive for the 'Network' Category

Unable to ping NLB Gateway from outside the NLB subnet or different subnets

Unable to ping NLB Gateway from outside the NLB subnet or different subnets.  Getting timeouts when attempting to do so? # nc -vz 192.168.0.224 Ncat: Version 7.50 ( https://nmap.org/ncat ) Ncat: Connection timed out. While host is on a subnet external to the NLB subnet? # ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue […]

DD-WRT: Configuring for Home with OSPF and Multiple VLAN’s.

Fast forward a few years, and after a few IoT device purchases, multiple VLAN setup with DD-WRT started to become more attractive.  More importantly, a friend asked about the same so I’ve set out to do just that: setup additional VLAN’s for my own network via DD-WRT.  Why would I want to do this?  For […]

DD-WRT WiFi: Slow connection or no connectivity at all.

When running DD-WRT firmware, slow speeds are seen or there is no connectivity?  Try to disable the Frame Burst rate in Wireless -> wl1-Advanced .  According to the definition, this can help with multiple devices. CTS Protection Mode The default value is Disabled. When set to Auto, a protection mechanism will ensure that your Wireless-B devices will connect […]

Windows / Linux: The local device name is already in use. This connection has not been restored and IP checksum offload

While setting up my gigabit ethernet network, during simulataneous Windows 7 file transfers to the HTPC+B setup, I've received a number of disconnects, virtually every time while transferring my files.  At the point, I not only lost connectivity with the HTPC+B but also my web access most of the time.  Here are the culprits and […]

HTPC / Backup Home Server Solution using Linux

Overview: HTPC / Home Backup: MDADM, RAID6, LVM, XFS, CIFS and NFS In this post we'll take a look at setting up a 4TB storage, HTPC, and active backup using basic components that can be bought from the local PC store and freely available software.   Here I set out to try and consolidate my storage […]

Red Hat Linux Fedora: Fedora 13 to Fedora 14(64) upgrade.

In this upgrade, I planned to skip a version to see how things go jumping up two levels.  Unfortunately reading this post from The Register about Linus Torvalds had me thinking back to F14 again.  (This brings back fond memories of the KDE 4.0 desktop upgrade issues in F9 that didn't go so well.  I […]

Linux Wireless Networking Step by Step HowTo

For this howto we will be using the TP-LINK line of USB wireless cards.  More precisely the 54Mbps TL-WN321G and the 300M TL-WN821N adapters otherwise known for running the Atheros Communications, Inc.  Atheros eXtended Range™ technology.  This is an important note because this is how this card will appear under Linux. I find these adapters […]

Linux / Windows Networking: Configuring and securing a router for Wireless and Wired Networks.

Here I would like to take you through the steps to configuring and securing a router (In this case we will use the WRT54G as an example) for your home or small office setup.  Securing a router can be very important especially when the wireless function is enabled.  Likely the most important reason is to […]

Web and Networking: Securing the Apache HTTPD (port 80) configuration from malicious scans.

It's still a surprise to most just how much scanning and probing by either hackers or malicious software is going on on the web when they do find out.  I mean, do you really know how many times your workstation or home network get's hit by attempted intrusions and invasions?  I was never able to find […]


     
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