Networking
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Routing
- Create a persistent static route
- Enable forwarding of IPv4 network packets
- Ensure symmetric routing on a server with multiple default gateways
Ethernet
- Bridge traffic between two or more Ethernet interfaces on Linux
- Change the MAC address of an Ethernet interface
- Persistently bridge traffic between two or more Ethernet interfaces (Debian)
- Persistently bridge traffic between two or more Ethernet interfaces (Red Hat)
- Persistently bridge traffic between two or more Ethernet interfaces (SUSE)
- Troubleshooting Ethernet bridging on Linux
Maximum Transmission Unit (MTU)
- Change the MTU of a network interface
- Change the MTU of an network interface using DHCP
- Persistently change the MTU of an network interface (Debian)
- Persistently change the MTU of an network interface (Red Hat)
VLANs
- Configure an Ethernet interface as a QinQ VLAN trunk
- Configure an Ethernet interface as a VLAN trunk
- Configure an Ethernet interface as a VLAN trunk (Debian)
- Configure an Ethernet interface as a VLAN trunk (Red Hat)
Network Address Translation
- Share an IP address between clients using iptables
- Share an IP address between servers using iptables
Firewalling
- Block unsolicited inbound network traffic using iptables
- Implement port knocking using iptables
- Limit the rate of inbound TCP connections using iptables
- Make the configuration of iptables persistent (Debian)