Blog / Networking

Share your computer’s Internet connection with Connectify

February 13, 2012

I ran into a couple situations a few days ago where I needed to be able to share my computer’s Internet connection with my other devices. The hostel where I’m currently staying does not have Wi-Fi. They have a wired connection so I can still get Internet by plugging in the cable to my netbook’s RJ45 port. However, my Android phone/tablet and Kindle don’t have such a port.

I wanted ...

Internet access anywhere in Guatemala with a Tigo USB modem

February 11, 2012

I wanted to check my bank account one day but the Internet at the hostel I was staying at wasn’t working. Then I saw a guy using his laptop in the dining area and I asked him if he was able to pick up a Wi-Fi signal. He told me he’s using one of these Tigo USB modems to get Internet connection.

Tigo is a mobile phone service provider and appears to be ...

How to use client certificate authentication with Suds

July 15, 2011

This is related to my last post. I was finally able to communicate to an SSL-enabled SOAP service with my computer behind a proxy but then ran into another problem: certificate-based authentication.

Suds actually doesn’t support certificate authentication directly, but fortunately someone created a custom transport for it here.

I tried his code but then ran into connection issues again, I had to modify it a little bit to include the proxy settings in ...

How to connect to a SOAP-based web service with Suds over a proxy that requires authentication

July 14, 2011

I’m writing a small Python program to connect to a SOAP-based web service using Suds and just ran into an issue with authenticating to our proxy server. I’m able to connect fine if the web service runs on http, but the web service we need to connect to uses https and the urllib2 module threw an error:

urllib2.URLError: <urlopen error Tunnel connection failed: 407 Proxy Authentication Required>

The solution in my case ...

How to enable Telnet on Windows 7

July 10, 2011

We have a computer at work that runs on Windows 7 and I needed to check whether it can connect to our internal SMTP server so I can use it to send emails. The quickest way to do this is to telnet to the SMTP server on port 25 but it turned out telnet is disabled/not installed by default on Windows 7. It gave the message “‘telnet’ is not recognized as an internal or ...

How to set the proxy settings in Windows via command line

June 11, 2011

Once in a while I need to download and install Python packages at work and having switched to Linux (Ubuntu) at home, I find it quite annoying now to have to go to a website, download the package I need, then manually install.

Fortunately, the pip installer works for Windows as well, allowing the installation of Python packages automatically with a simple command (pip install package_name). But at work, we’re behind a proxy server ...