IP and Network Configuration

Finding Your Server IP

From the Client Panel

Your server IP is visible in the main panel tab for your server.

From SSH

# IP of all interfaces
ip addr show

# Just the main IP (quick method)
hostname -I | awk '{print $1}'

# Public IP (how the outside sees it)
curl -s ifconfig.me

Static Network Configuration

Debian / Ubuntu (Netplan: Ubuntu 18.04+)

Configuration file: /etc/netplan/01-netcfg.yaml

network:
  version: 2
  ethernets:
    eth0:
      addresses:
        - 192.168.1.100/24
      routes:
        - to: default
          via: 192.168.1.1
      nameservers:
        addresses: [8.8.8.8, 1.1.1.1]

Apply the changes:

netplan apply

Debian (ifupdown: earlier versions)

File: /etc/network/interfaces

auto eth0
iface eth0 inet static
    address 192.168.1.100
    netmask 255.255.255.0
    gateway 192.168.1.1
    dns-nameservers 8.8.8.8 1.1.1.1

Restart networking:

systemctl restart networking

CentOS / AlmaLinux / Rocky Linux

File: /etc/sysconfig/network-scripts/ifcfg-eth0

TYPE=Ethernet
BOOTPROTO=static
IPADDR=192.168.1.100
PREFIX=24
GATEWAY=192.168.1.1
DNS1=8.8.8.8
DNS2=1.1.1.1
ONBOOT=yes

Restart networking:

systemctl restart NetworkManager

Verify Connectivity

# Test internet connection
ping -c 4 8.8.8.8

# Test DNS resolution
ping -c 4 google.com

# Trace the network path
traceroute 8.8.8.8

# Verify open listening ports
ss -tlnp

Adding a Secondary IP (Alias)

If you have an additional IP to add to the server:

# Temporary (lost on reboot)
ip addr add 192.168.1.101/24 dev eth0

# Permanent: add to Netplan or interfaces file

Network Interface Name

On modern servers, the interface might be called eth0, ens3, enp1s0, or something else. To see it:

ip link show

IP and Network Configuration

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