Server Mode → IPs lists all IP addresses currently assigned to the server and lets you allocate dedicated IPs to individual hosting accounts.
Adding IPs to the Panel
Before you can assign an IP to an account, it must be added to the server at the OS level and then registered in the Panel.
- Add the IP to the server's network interface (via your provider's control panel or
ip addr add). - In Server Mode → IPs → Add IP, enter the IP address and subnet mask.
- The Panel registers the IP and makes it available for assignment.
Note: Opterius does not configure the network interface for you. IP configuration at the OS level is your responsibility and depends on your provider and network setup.
Shared vs Dedicated IPs
Shared IP — the default. All accounts on the server share the primary server IP. SSL certificates work fine on a shared IP via SNI (Server Name Indication), which is supported by every modern browser and TLS client. Most deployments run entirely on a single shared IP.
Dedicated IP — one IP address assigned exclusively to one account. Useful in specific situations:
| Use case | Why a dedicated IP helps |
|---|---|
| Legacy SSL clients | Older clients (pre-SNI) that cannot handle virtual hosting on TLS. Rare in practice but relevant for some enterprise clients. |
| SMTP deliverability | Isolating a client's outbound email to a dedicated IP lets you manage that IP's reputation separately. A suspended/abusive account cannot affect other clients' mail. |
| Compliance requirements | Some compliance frameworks require a dedicated IP for the application. |
| IP-based access control | A client's firewall rules allow traffic from a specific IP — a dedicated IP gives them a stable, exclusive source address. |
Assigning a Dedicated IP to an Account
In Server Mode → IPs, find the IP you want to assign and click Assign. Select the target account from the dropdown. The Panel updates the nginx vhost config and DNS A record for that account's domain automatically.
To remove a dedicated IP assignment: click Unassign next to the IP. The account reverts to the server's shared IP. SSL remains valid — the certificate is not tied to the IP address.
IP Assignment During Account Creation
When creating a new account (Creating Hosting Accounts), you can optionally select a dedicated IP in the IP Address field. If left on Shared, the account uses the server's primary IP.
Checking IP Assignments
The IP list shows:
| Column | Description |
|---|---|
| IP Address | The IPv4 or IPv6 address |
| Type | Shared or Dedicated |
| Assigned To | Account username (dedicated) or "Shared" |
| PTR Record | Reverse DNS — set at your provider, not from this panel |