迁移iptables规则到nft

1. To save the existing rules to a file, run below command:

# iptables-save > rules.iptables

2. Move the step1 file to CentOS/RHEL 8 Server via scp or ftp. You can use vi editor as well to copy the content from CentOS/RHEL 6 or 7 machine.
3. Run the below command to generate the nft rules file on CentOS/RHEL 8 with iptables rules file.

# iptables-restore-translate -f rules.iptables > rules.nft

4. Load the rules in CentOS/RHEL 8 machine, make sure nftables service is running on the system.

# nft -f rules.nft     ### load the rule via nft to nftables.

5. To Display rule in CentOS/RHEL 8 Server .

# nft list ruleset

You can see the rules have been migrated from CentOS/RHEL 6 or 7 to CentOS/RHEL 8 server now and can test them as well

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