Networking
Network speed
http://www.speedtest.net/
Check which process is listening on which port
Avoid cheap network adapters
"If you need high throughput and low impact on your server, you are better off buying a quality network adapter. Unfortunately, some name-brand adapters are not much better than the cheap adapters, and some potentially good adapters do not have accurate documentation available to write good drivers. Gigabit adapters often perform better than 10Mbps/100Mbps adapters, even when used on slower speed networks, due to superior buffering." (emphasis added)
http://www.openbsd.org/faq/faq3.html#SelectHW
Network connection manager
https://launchpad.net/wicd
Limiting network transfer speeds
http://distrowatch.com/weekly.php?issue=20141110#qa
Blocking network access for specific applications
http://distrowatch.com/weekly.php?issue=20141124#qa
Security scanner
'Nmap (Network Mapper) is a free utility for network discovery and security auditing. Many systems and network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or service uptime. Nmap uses raw IP packets in novel ways to determine what hosts are available on the network, what services (application name and version) those hosts are offering, which operating systems (and OS versions) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics.'
http://nmap.org/
http://distrowatch.com/weekly.php?issue=20140707#qa
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/3/html/Security_Guide/s1-server-ports.html
Media Access Control (M.A.C.) address anonymization
Show network interface for eth0
Show current Media Access Control (M.A.C.) address for eth0 network interface
ip link show eth0 | grep link/ether
Modify the Media Access Control (M.A.C.) address for eth0 network interface
ip link set dev eth0 down
ip link set dev eth0 address 00:00:00:00:00:01
ip link set dev eth0 up
ip link show eth0 | grep link/ether
Show network interface for wlan0
Show current Media Access Control (M.A.C.) address for wlan0 network interface
ip link show wlan0 | grep link/ether
Modify the Media Access Control (M.A.C.) address for wlan0 network interface
ip link set dev wlan0 down
ip link set dev wlan0 address 00:00:00:00:00:01
ip link set dev wlan0 up
ip link show wlan0 | grep link/ether
Dependencies
+curl,+dhcpcd,+iptables,+wget
Verify the installed dhcpcd version via the command-line interface:
Appendix
DEPRECATED: Modifying the Media Access Control (M.A.C.) address of eth0 network interface using ifconfig
ifconfig eth0 | grep HWaddr
ifconfig eth0 down
ifconfig eth0 hw ether AA:BB:CC:DD:EE:FF
ifconfig eth0 up
ifconfig eth0 | grep HWaddr
References
Using TrueOS as a IPFW based home router
http://roy.marples.name/projects/dhcpcd/home
http://roy.marples.name/projects/dhcpcd/timeline/
https://wiki.archlinux.org/index.php/Dhcpcd
https://www.archlinux.org/packages/core/x86_64/dhcpcd/
http://xmodulo.com/2014/02/spoof-mac-address-network-interface-linux.html
https://wiki.archlinux.org/index.php/MAC_Address_Spoofing
http://www.whatsmyip.org/more-info-about-you/
http://www.openbsd.org/faq/faq6.html
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