Howtos and Tutorials from behind the firewall
In my last post I told you how to change the interface metric from command line if your Ptcl smart tv is not working on your pc.
In this post I will tell you how to change the interface metric from GUI.
UBUNTU (Classic Gnome / Fallback) GUI WAY
System -> Preferences -> Startup ApplicationsUBUNTU 2D/3D
startup app, you should see one option:
If you has multiple interface on your PC then chances are multicast streaming (like iptv PTCL smart tv pc application) will not work on your pc.
Most of the peoples who has the multiple interface like lan card wifi connected on the same time complains ptcl smart tv not working on their pc.
The reason behind this problem is your video player is send multicast packets to the wrong interface. To solve the problem simply follow these steps.
Run cmd .
If you has Windows vista or later then right click on the cmd and run as administrator.
Enter the following command on the cmd to check the interface name and metric
netsh interface ipv4 show interface
output will be like this.
If you want to run PTCL smart tv on linux , mac or you did not like the application that ptcl has created for its smart tv customers then you are on right place. Simply download the file from here. And open it with any player like vlc kme etc and you are good to go. The attached file smarttv.m3u has the list of all the PTCL smart tv channels. You can use this file to run the channels on your iPad etc.
Personally I did not like the PTCL smart tv pc application. It did not provide you much control like you did not change the video aspect ratio. Put the video on top so you can work and watch tv on the same time.
Get IPV6 and unblock youtube facebook etc
In this video Muhammad Zeeshan explains how you can get ipv6 and unblock websites youtube facebook etc with it. Video also explain how you download and install freenet6 gogoc and use it.
PHP is an open-source server-side scripting language and it is a widely used. The Apache web server provides access to files and content via the HTTP OR HTTPS protocol. A misconfigured server-side scripting language can create all sorts of problems. So, PHP should be used with caution. Here are twenty-five php security best practices for sysadmins for configuring PHP securely.
Q. For security and to save bandwidth I would like to configure Squid proxy server such way that I do not want my users to download all of the following files:
MP3
MPEG
MPG
AVG
AVI
EXE
How do I configure squid content filtering?
A. You can use squid ACL (access control list) to block all these files easily.
First open squid.conf file /etc/squid/squid.conf:
# vi /etc/squid/squid.conf
Now add following lines to your squid ACL section:
acl blockfiles urlpath_regex "/etc/squid/blocks.files.acl"
You want display custom error message when a file is blocked:
# Deny all blocked extension
deny_info ERR_BLOCKED_FILES blockfiles
http_access deny blockfiles
Save and close the file. Read more …
Squid server is a popular open source GPLd proxy and web cache. It has a variety of uses, from speeding up a web server by caching repeated requests, to caching web, name server query , and other network lookups for a group of people sharing network resources. It is primarily designed to run on Linux / Unix-like systems. Squid is a high-performance proxy caching server for Web clients, supporting FTP, gopher, and HTTP data objects. Unlike traditional caching software, Squid handles all requests in a single, non-blocking, I/O-driven process. Squid keeps meta data and especially hot objects cached in RAM, caches DNS lookups, supports non-blocking DNS lookups, and implements negative caching of failed requests. Squid consists of a main server program squid, a Domain Name System lookup program (dnsserver), a program for retrieving FTP data (ftpget), and some management and client tools.
Use yum command as follows:
# yum install squid
Output:
Loading "installonlyn" plugin Setting up Install Process Setting up repositories Reading repository metadata in from local files Parsing package install arguments Resolving Dependencies --> Populating transaction set with selected packages. Please wait. ---> Package squid.i386 7:2.6.STABLE6-4.el5 set to be updated --> Running transaction check Dependencies Resolved ============================================================================= Package Arch Version Repository Size ============================================================================= Installing: squid i386 7:2.6.STABLE6-4.el5 updates 1.2 M Transaction Summary ============================================================================= Install 1 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 1.2 M Is this ok [y/N]: y Downloading Packages: Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing: squid ######################### [1/1] Installed: squid.i386 7:2.6.STABLE6-4.el5 Complete!
For fine control you may need to use Squid proxy server authentication. This will only allow authorized users to use proxy server.
You need to use proxy_auth ACLs to configure ncsa_auth module. Browsers send the user’s authentication in the Authorization request header. If Squid gets a request and the http_access rule list gets to a proxy_auth ACL, Squid looks for the Authorization header. If the header is present, Squid decodes it and extracts a username and password.
However squid is not equipped with password authentication. You need to take help of authentication helpers. Following are included by default in most squid and most Linux distros:
=> NCSA: Uses an NCSA-style username and password file.
=> LDAP: Uses the Lightweight Directory Access Protocol
=> MSNT: Uses a Windows NT authentication domain.
=> PAM: Uses the Linux Pluggable Authentication Modules scheme.
=> SMB: Uses a SMB server like Windows NT or Samba.
=> getpwam: Uses the old-fashioned Unix password file.
=> SASL: Uses SALS libraries.
=> NTLM, Negotiate and Digest authentication
From the many tales of woe on the web about installing perl DBD::Oracle, from “invalid lvalue in assignment” to mysterious make errors, and the pages of intricate instructions doubtfully translated from the French, I assumed that it was a long and difficult process and it was natural that I was having problems installing on 64-bit CentOS. WRONG! It can actually be easy for lazy and dumb people like me.
First, just use yum and hand-compiling. Don’t add CPAN to the mix.