# Firewalls Details – DigitalOcean Documentation

> Features, plans and pricing, availability, limits, known issues, and more.
- [Firewalls Features](https://docs.digitalocean.com/products/networking/firewalls/details/features/index.html.md): Firewalls place a barrier between your servers and other machines on the network to protect them from external attacks. Firewalls can be host-based, which are configured on a per-server basis using services like IPTables or UFW. Others, like DigitalOcean …
- [Firewalls Pricing](https://docs.digitalocean.com/products/networking/firewalls/details/pricing/index.html.md): DigitalOcean Cloud Firewalls are available at no additional cost.
- [Firewalls Availability](https://docs.digitalocean.com/products/networking/firewalls/details/availability/index.html.md): Cloud firewalls are available in every region. A cloud firewall’s rules can include Droplets from any datacenter.
- [Firewalls Limits](https://docs.digitalocean.com/products/networking/firewalls/details/limits/index.html.md): Limits and known issues for Firewalls.