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Linux networking tutorials

Linux: How To Find the Default Gateway

contributed by Rob Rogers on January 3, 2008 under Linux networking

Whether you’re troubleshooting network problems or trying to set up a VPN, knowing what address your computer has configured as the default gateway is always useful. Running a simple command from the terminal can give you this.

RedHat Linux IP Forwarding

contributed by Al Banks on February 2, 2004 under Linux networking

To enable IP (IPv4) Forwarding in RedHat linux.

Disable ICMP echo (ping) responses in Linux

contributed by qmchenry on September 5, 2003 under Linux networking

Many malicious attacks begin with a ping scan. Disabling ICMP echo requests prevents your system’s discovery with a ping.

Determine Linux ethernet interface speed and duplex

contributed by qmchenry on September 3, 2003 under Linux networking

Determine the auto-negotiated Ethernet connection speed and duplex using the mii-tool command.

Force the speed and duplex of a Linux ethernet interface

contributed by qmchenry on under Linux networking

Using mii-tool, the speed and duplex of an ethernet interface can be set manually.