Rick Donato How can I optimize the throughput of a VPN across a WAN based link ? I was recently asked this question the other day by a client, after seeing the results (in which the transfer speeds were nearly tripled) I thought it would make an interesting article. Background My client had a VPN (Site to … Read more
The Juniper SRX offers 4 types of High Availability (HA) deployment, Active/Passive Simple Active/Passive Full Mesh Active/Active Deployment Active/Passive Transparent Mode Within this article we will look at Active/Passive Simple upon a SRX 240 series device. Summary Active/Passive is the most common type of HA deployment and consists of 2 firewall members. Whilst one node … Read more
Within this short tutorial we will show you the steps required to create a csv file that includes multi-line cells within Python. In order to create a mutliline cell within Excel (2010/2013) the following is required: newlines are represented with a carriage return/newline, the string should be wrapped in quotes. One of the great things … Read more
Issue When running Django 1.5.1 you may observe the following error, NoReverseMatch at /‘url’ requires a non-empty first argument. The syntax changed in Django 1.5, see the docs. Solution This issue can occur due to changes in the url tag syntax. More information on this can be found at https://docs.djangoproject.com/en/dev/releases/1.5/. The correct syntax for url … Read more
Within this article we will look at how to permit only authenticated users to a view via the use of a custom login form. SETTINGS First of all a few changes need to be made to the settings.py file. Such as + ‘django.contrib.auth.middleware.AuthenticationMiddleware’ to MIDDLEWARE_CLASSES + ‘django.contrib.auth’ and ‘django.contrib.contenttypes’to INSTALLED_APPS Once done update your database by … Read more
For years, I had ran my Prolific USB to Serial cable from my Windows 32bit laptop without any issues. Unfortunately, life when running Windows is never easy. After upgrading Windows 7 to 64bit I tried to install the drivers from CNET downloads. This was a HUGE mistake. Even though the CNET downloader told me it … Read more
To configure a Site to Site VPN between 2 Peers ; one with a Dynamic IP and the other with a static IP a dynamic crypto map is used. However as the static based peer will be unaware of the remote peers IP the VPN can only be initated from the dynamic side. Note : … Read more
A decorator provides a simplified way to pass one callable object to another (i.e a class or function). The main benefit of decorators is that it allows you to clearly state where and what objects are being passed to each other. Typically this can be achieved by the following. Without Decorators As you can see, … Read more
You may find that when listing directories within the shell and when using a black background that the directory names aren’t clearly readable. To resolve this issue the following command and then log back in. This command will issue a find and replace against the color setting (for directory listings) within the necessary configuration file. … Read more
List comprehensions provide an more Pythonic and alternative way (i.e instead of using map and filter) in which to express a list. There are 3 components to a list comprehension. The expression, the for loop and the optional condition. As you can see below, by changing the expressions and enclosing brackets to your expression you … Read more