There are multiple parts to this:

• Increase Firewall Maximum Table Entries
• Install pfBlockerNG
• First Install Wizard
• Configure pfBlockerNG

Navigate to Firewall → pfBlockerNG.

Within the General section:

• pfBlockerNG: Checked. This enabled pfBlockerNG.
• Keep Settings: Checked. pgBlockerNG can remember any settings even against upgrades of the software.
• CRON Settings: Every Hour 00 0 0.
• Download Failure Threshold: No Limit.

Within the Log Settings section:

• Keep all settings at default: 20000.

Scroll to the bottom of the page and click the Save button.

General Tab should look like this:

Navigate to Firewall → pfBlockerNG → IP.

Within the IP Configuration section:

• De-Duplication: Checked
• CIDR Aggregation: Not checked
• Suppression: Checked
• Force Global IP Logging: Not checked
• Placeholder IP Address: 127.1.7.7
• ASN Reporting: Disabled

Navigate to Firewall → pfBlockerNG → IP.

Within the MaxMind GeoIP configuration section:

• MaxMind License Key: Enter the MaxMind License Key. If you don't have a key, register for one on the Maxmind Site.
• MaxMind Localized Language: English.
• MaxMind CSV Updates: Not Checked.

Within the IP Interface/Rules Configuration section:

• Inbound Firewall Rules: WAN and Block.
• Outbound Firewall Rules: LAN and Reject.
  • If you have more than one internal interfaces, press CTRL or CMD (for Mac users) and click on interfaces.
• Floating Rules: Not Checked.
• Firewall 'Auto' Rule Order: Select the top option.
• Firewall 'Auto' Rule Suffix: auto rule.
• Kill States: Checked.

Scroll to the bottom of the page and click the Save button.

See IP Lists

Navigate to Firewall → pfBlockerNG → IP → IPv4.

Click the Add button.

Give it a Name and Description.

Add in as many IP Source Definitions as needed.

Set:

• State: ON.
• Action: Deny Both.
• Update Frequency: Once per day.

For Example:

Navigate to Firewall → pfBlockerNG → DNSBL and check the box for Enable DNSBL.

Optionally, if you have a lot of RAM, you can also enable TLD. This setting enables additional processing to block ALL sub-domains for advanced blocking. For example, a list with sharewiz.net would also result in blog.sharewiz.net also being blocked if TLD is enabled.

Locate the DNSBL Webserver Configuration section:

• Virtual IP Address: 10.10.10.1. This is the default IP address and should be fine. Only change if needed. Enter an IP address that is not in your internal networks, something like 10.10.10.10.
• VIP Address Type: IP Alias. The default. Only change if needed.
• Port: 8081. The default. Only change if needed.
• SSL Port: 8443. The default. Only change if needed.
• Webserver Interface: LAN. The default. Only change if needed. Select LAN or another internal interface to listen on.

Locate Permit Firewall Rules within the DNSBL Configuration section:

• If you ONLY have one LAN interface, leave this setting unchecked.
• If you have multiple LAN interfaces, check this setting and select each interface to protect.
• Scroll to the bottom of the page and click the Save button.

Locate the DNSBL Whitelist Section:

• See DNSBL Whitelist.
• Enter the following white-list domains and modify as you like:

• .play.google.com
  .drive.google.com
  .accounts.google.com
  .www.google.com
  .github.com
  .outlook.live.com
  .edge-live.outlook.office.com # CNAME for (outlook.live.com)
  .outlook.ha-live.office365.com # CNAME for (outlook.live.com)
  .outlook.ha.office365.com # CNAME for (outlook.live.com)
  .outlook.ms-acdc.office.com # CNAME for (outlook.live.com)
  .amazonaws.com
  .login.live.com
  .login.msa.akadns6.net # CNAME for (login.live.com)
  .ipv4.login.msa.akadns6.net # CNAME for (login.live.com)
  .mail.google.com
  .googlemail.l.google.com # CNAME for (mail.google.com)
  .pbs.twimg.com
  .wildcard.twimg.com # CNAME for (pbs.twimg.com)
  .sites.google.com
  .www3.l.google.com # CNAME for (sites.google.com)
  .docs.google.com
  .mobile.free.fr
  .plus.google.com
  .samsungcloudsolution.net
  .samsungelectronics.com
  .icloud.com
  .microsoft.com
  .windows.com
  .skype.com
  .googleusercontent.com

Locate DNSBL IPs section:

• List Action: Deny Both.
• Enable Logging: Enable.

Scroll to the bottom of the page and click the Save button.

Navigate to Firewall → pfBlockerNG → Feeds.

Scroll down to the DNSBL Category section.

Select the Easylist by clicking on the + key towards the left side.

Set EasyList Feeds to:

• State: ON
• Action: Unbound
• Update Frequency: Once per day

Scroll to the bottom of the page and click the Save button.

See pfBlockerNG DNSBL Lists.

Navigate to Firewall → pfBlockerNG → DNSBL → DNSBL Groups.

Click the Add button.

Give it a Name and Description.

Add in as many DNSBL Source Definitions as needed.

Set:

• State: ON
• Action: Unbound
• Update Frequency: Once per day

For Example:

Updates are run on the schedule earlier.

However, the first one must be initiated manually to take effect immediately.

Navigate to Firewall → pfBlockerNG → Update.

Click the radio button for Update and click the Run button.

Observe the log viewer as the update processes and allow it a couple minutes to finish.

After the initial update, you should notice ads are now being blocked in your browser.

Navigate to Status → Services.

Restart both pfBlockerNG DNSBL & Unbound services.

Normally, pinging a site will return the sites actual IP address.

However, with pfBlockerNG properly setup you may instead see a reply of 10.10.10.1, which is the default virtual IP address DNSBL creates:

For sites that are allowed to get through, their proper IP address will be returned by a ping instead of 10.10.10.1:

The same goes for an nslookup query, which will also return a response of 10.10.10.1 for adverts:

For sites that are allowed to get through, their proper IP address will be returned instead of 10.10.10.1.