Hi,
On my Debian 12 Bookworm ( raspberry pi )
My nftables do not block DHCP packets ! according to this basic rules
nft -y list rulesset
table ip Tip {
chain chIN {
type filter hook input priority 0; policy drop;
ct state established,related accept
}
chain chFW {
type filter hook forward priority 0; policy drop;
}
chain chOUT {
type filter hook output priority 0; policy drop;
udp dport 53 accept
tcp dport { 80, 443} accept
ct state established,related accept
}
}
DHCP should be blocked… but it’s not as I get an IP from it…
Any ideas ?
Thanks.
Why block from the firewall. Normally you would set a static ip to not use dhcp. You could also uninstall or disable the dhcp client service.