Monday 11 March 2013

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How to access proxy server in centos-6

How to access proxy server in centos-6




This tutorial assume you already have squid proxy server configured somewhere.

Now for accessing proxy in centos do the following.

1.Configuring Proxy Server Access

To enable all yum operations to use a proxy server, specify the proxy server details in /etc/yum.conf. The proxy setting must specify the proxy server as a complete URL, including the TCP port number. If your proxy server requires a username and password, specify these by adding proxy_username and proxy_password settings.
The settings below enable yum to use the proxy server mycache.mydomain.com, connecting to port 3128, with the username yum-user and the password qwerty.


# The proxy server - proxy server:port number
proxy=http://mycache.mydomain.com:3128
# The account details for yum connections
proxy_username=yum-user
proxy_password=qwerty




2.Configuring Proxy Server Access for a Single User


To enable proxy access for a specific user, add the lines in the example box below to the user's shell profile. For the default bash shell, the profile is the file ~/.bash_profile. The settings below enable yum to use the proxy server mycache.mydomain.com, connecting to port 3128.

# The Web proxy server used by this account
http_proxy="http://mycache.mydomain.com:3128"
export http_proxy

If the proxy server requires a username and password, add these to the URL. To include the username yum-user and the password qwerty, add these settings:



# The Web proxy server, with the username and password for this account
http_proxy="http://yum-user:qwerty@mycache.mydomain.com:3128"
export http_proxy


That's it Enjoy using proxy setting.












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http://namhuy.net/908/how-to-install-iftop-bandwidth-monitoring-tool-in-rhel-centos-fedora.html

Requirements:
libpcap: module provides a user-level network packet capture information and statistics.
libncurses: is a API programming library that enables programmers to provide text-based interfaces in a terminal.
gcc: GNU Compiler Collection (GCC) is a compiler system produced by the GNU Project supporting various programming languages.

Install libpcap, libnurses, gcc via yum
yum -y install libpcap libpcap-devel ncurses ncurses-devel gcc

Download and Install iftop
wget http://www.ex-parrot.com/pdw/iftop/download/iftop-0.17.tar.gz
./configure
make
make install

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