VMplayer: How to bridge to a specific network port

Suppose you need to bridge another network interface under your VM to a specific physical network port. First, you need to create a vmnet port and bind with that specific port. Here are the commands:

vmnet-bridge -n 2 -i eth1  -d /var/run/vmnet-bridge-2.pid -1vmnet2
mknod /dev/vmnet2 c 119 4
vmnet-netifup -d /var/run/vmnet-netifup-vmnet2.pid /dev/vmnet2 vmnet2
ifconfig vmnet2 up

Watch your favourite TV programmes when you are abroad

If you are abroad and missing your favourite TV programmes (BBC iPlayer or ITV Live Sport) which are only available free online at home, then you can configure browser to use SOCKS proxy with ssh tunnelling to stream video/audio data from your remote (anywhere in UK) to your browser (abroad) location.

See this on how to setup.

For me, I use VPN to gain ssh access.

Malformed HTTP Content-Type value from Apache-Coyote 1.1

Couple days ago, I was maintaining AppQoS appliances at customer site and noticed that one of our analysis tables from the HTTP module produced some strange results.

The table displays all the HTTP traffic in terms of media type (MIME) and transaction size in descending order.

Awk scripts for reading and editing Ubuntu /etc/network/interfaces file (Part 2/2)

For modifying the /etc/network/interfaces file, I use another script and it is slightly more complicated.

Awk scripts for reading and editing Ubuntu /etc/network/interfaces file (Part 1/2)

It is pretty straightforward to setup permanent network configuration on Ubuntu 8.04. All you need is to edit /etc/network/interfaces file and a very thorough tutorial is given in http://www.cyberciti.biz/faq/setting-up-an-network-interfaces-file/ to show you how manually edit for DHCP, static and promiscuous mode. However, I cannot find any command line utility for configuring permanent network setup.

So here are couple awk scripts for reading and writing /etc/network/interfaces file. I hope someone will find it useful, especially for integrating with other programs.

Malformed HTTP Protocol from www.assoc-amazon.com

Again, I was diagnosing HTTP protocol traffic on my local network and I noticed something really strange that disturbed the HTTP protocol analyser module in AppQoS. A serious malformed response packet was found from www.assoc-amazon.com. The response headers were formed without probably ended with CR, only LF and the misspell of the ‘Connection’ header. Here shows an example of the response packet from the site using Wireshark/Ethereal.

Malformed HTTP Protocol from Yahoo Traffic Server (YTS)?

I noticed that my HTTP protocol analyser module of AppQoS reported some malformed HTTP packets. This was strange at first sight as the RFC for HTTP protocol is pretty well defined or this may be a bug in my module. So I inspected the captured packet with Wireshark/Ethereal. Thankfully, it wasn’t a bug in my module, it was actually the packet.

The future of homeplug networking

The use of electric wiring as a mean of networking is a significant movement in terms of connectivity. In the future homeplugs will replace wireless networking and much of the ethernet cabling in homes or home offices.

A useful document for explaining interrupt throttling triggered by high network load

I was tuning network performance under high traffic load on FreeBSD and stumbled across some parameters on the em drivers for the Intel Gigabit Network Card. The man page of em(4) explains briefly what

Windows Network Performance in File Shares – What lies beneath when you move your mouse

When users experience a slow down in Windows File Share, often the usual suspect is the speed (bandwidth & high latency) or high volume of network traffic, but is it really?