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TxCR Networking Fundamentals

Understanding network configuration in the TxCR environment.

Network Overview​

  • Internal networks: 10.x.x.x ranges
  • VLANs for isolation
  • Gateway configuration
  • DNS settings

Configuring Static IP (Linux)​

Ubuntu/Debian (Netplan)​

Edit /etc/netplan/01-netcfg.yaml:

network:
  version: 2
  ethernets:
    eth0:
      addresses: [10.50.1.100/24]
      gateway4: 10.50.1.1
      nameservers:
        addresses: [8.8.8.8, 8.8.4.4]

Apply:

sudo netplan apply

RHEL/Rocky (NetworkManager)​

sudo nmcli con mod eth0 ipv4.addresses 10.50.1.100/24
sudo nmcli con mod eth0 ipv4.gateway 10.50.1.1
sudo nmcli con mod eth0 ipv4.dns "8.8.8.8 8.8.4.4"
sudo nmcli con mod eth0 ipv4.method manual
sudo nmcli con up eth0

Testing Connectivity​

# Ping gateway
ping 10.50.1.1

# Check routing
ip route

# Test DNS
nslookup google.com

# Trace route
traceroute 8.8.8.8

Firewall Basics​

See OPNsense Firewall for advanced configurations.

Next: OPNsense Firewall | VyOS Routing