Networking


The following question was asked in the Unix networking exam:

How do you speed up ping and traceroute command responses under Unix or Linux operating systems?

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I am a new CentOS Linux server user. How do I change hostname on CentOS Linux?

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How do I install and configure SquidGuard – a web filter plugin for Squid to restrict access to domains/URLs based upon access control lists? How do I block porn, gambling, and other web-sites using squid proxy server version 3.x under Debian or Ubuntu Linux server for my school?

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I work form home and I need to login into our corporate network using a pptp based vpn. How do I configure and setup up a PPTP VPN client under FreeBSD desktop / laptop or server operating systems?

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My router configured by ISP tech and it is set to get DNS server address automatically from upstream. Is there is a way to find out the IP address of the dns server used by my router which is located at 192.168.1.1? Is there Linux, Unix, Apple OS X, or MS-Windows command that I can use get the same information?

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How do I find out the current network interface throughput statistics on Linux (CentOS or Debian based distro)? How do I see current kernel snmp counters and network interface statistics on Linux operating systems?

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ip-command

I am a new Linux system admin user. How do I use ip command line utility to display or configure networking, routing, and tunnels on Linux operating systems? How do I configures or displays network interface parameters for a network using TCP/IP on Linux operating systems?

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