| iptables-translate -A FORWARD -p esp -j ACCEPT | |
| nft add rule ip filter FORWARD ip protocol esp counter accept | |
| iptables-translate -A INPUT --in-interface wan --protocol esp -j ACCEPT | |
| nft add rule ip filter INPUT iifname "wan" ip protocol esp counter accept | |
| iptables-translate -A INPUT -p 50 -m esp --espspi 500 -j DROP | |
| nft add rule ip filter INPUT esp spi 500 counter drop | |
| iptables-translate -A INPUT -p 50 -m esp --espspi 500:600 -j DROP | |
| nft add rule ip filter INPUT esp spi 500-600 counter drop |