Configuring the network firewall through the administrative control panel’s firewall

Instructions for configuring rules for virtual server networks in the control panel.

What is?

Using the firewall, you can control to the public network of , and incoming and outgoing data packets directly from the control panel. This option is not charged separately and is included in the network price.

At the moment there is a limit of 50 rules, if this limit is not enough for you, then you can increase it upon request to technical support .

Network architecture

To avoid conflicting firewall rules and properly configure it, you need to understand how existing firewalls work. First, you can set up a firewall for the private network. Secondly, for the server through the control panel. Thirdly, you can set up an internal firewall, , for Linux through iptables, for – built-in.

For incoming packets, the network layer firewall (if any) will be applied first. If the packet passed, then the firewall at the server level will be applied next, the internal mechanism will be used last. For outgoing packets, the reverse sequence of actions will be applied:

Create a rule

The firewall configuration is available for networks and is located in the network settings in the Firewall section.

– the order of the rules matters, the lower the order number of the rule (the higher it is in the list), the higher its priority. You can change the sequence of rules using Drag and Drop, dragging the rule with the left mouse button to the desired position;
– in the off state – all data packets, both incoming and outgoing, pass through the router;

Packets that do not match any rule can be allowed or denied, by default they are allowed.

To create a rule, click the Add button :

You will see a window for adding a rule. The following fields must be filled in:

  • Name – user-friendly name (no more than 50 characters), usually briefly describes the purpose of the rule;
  • Action – the action to be applied takes one of two values: Allow or Deny. Allow – permission to send data packets, Deny – prohibition of forwarding;
  • Source/Destination – you need to specify the server IP address or one of the following values: IP address, CIDR, range of IP addresses, any, internal and external;
  • SourcePort/DestinationPort – when choosing the TCP, UDP or TCP and UDP protocol, it is possible to either specify a port or range of ports, or any;
  • Protocol – protocol type, ANY, TCP, UDP, TCP and UDP and ICMP are available.

Click Save to create the rule.

In our example, the rule blocks packets entering the network via the Tcp protocol to the address range

For the created rule to take effect, you must save the changes using the Save button. You can create multiple rules and then save them all at once:

After that, the page will look like this:

Rule priority setting example

The lower the rule number (the higher it is in the list), the higher its priority. For example, after a deny rule has been created for incoming Tcp packets to a certain range of addresses, we will create a rule that allows receiving incoming packets on port 443 of the Tcp protocol from outgoing port 443. After saving the changes with this configuration, this port will still be unavailable, due to the fact that the deny rule has a higher priority:

To change the priority of the rules, drag the allowing rule to the first position with the left mouse button and save the changes:

After saving, the sequence numbers of the rules will change, and their priority will also change:

Now the firewall configuration allows packets to pass through the network to a certain range of addresses using the Tcp protocol on port 443, other Tcp packets will not go through, and all other packets that do not fall under the rules will go through to the network.


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