Guides tagged “nftables”
Step-by-step MdmHost guides about nftables, sorted A-Z.
8 guides
Get started with nftables: tables, chains and rules
Learn how nftables organises tables, chains and rules, build an inet filter table with a default-drop input chain that allows SSH and web traffic, and save it to nftables.conf.
Migrate iptables rules to nftables
Move an existing iptables firewall to native nftables. Check whether you run iptables-nft or legacy, export with iptables-save, translate the rules, test them and switch the boot service.
NAT, masquerade and port forwarding with nftables
Use nftables to masquerade VPN clients out through your VPS and forward ports to a backend with DNAT. Includes IP forwarding, forward chain rules and a complete VPN gateway ruleset.
Network Hardening: Monitoring for Unauthorized Port Scans on the VPS
Learn how to monitor port scans on a VPS, log the source addresses that probe your server, and block repeat offenders automatically on Linux and Windows.
Test firewall changes safely with an automatic rollback
Schedule an automatic undo before you change firewall rules. If a mistake blocks SSH, the old rules come back by themselves a few minutes later.
UFW vs firewalld vs nftables vs iptables: which Linux firewall to use
UFW, firewalld, nftables and iptables are not four rival firewalls. Learn how they fit together, what each distro uses by default and how to pick one tool for your VPS.
Use Fail2ban with firewalld or nftables ban actions
Make Fail2ban put its bans into the firewall your server really uses. Set banaction to firewalld rich rules or nftables, check the distribution defaults and confirm bans in the live ruleset.
Use nftables sets for fast allowlists and blocklists
Build named nftables sets for SSH allowlists and IP blocklists, use intervals for CIDR ranges and timeouts for temporary bans, change elements live, and rate-limit per IP with dynamic sets.
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