gistfile1.txt
· 3.0 KiB · Text
Bruto
function firewall::block_ip_logged() {
local client_ip="$1" target_ip="$2"
iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -j LOG --log-prefix "wgctl-dropped: " --log-level 4
iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -j DROP
log::wg_block "Blocked ${client_ip} → ${target_ip} (logged)"
}
function firewall::unblock_ip() {
local client_ip="$1" target_ip="$2"
iptables -D FORWARD -s "$client_ip" -d "$target_ip" -j LOG --log-prefix "wgctl-dropped: " --log-level 4 2>/dev/null || true
iptables -D FORWARD -s "$client_ip" -d "$target_ip" -j DROP 2>/dev/null || true
}
function firewall::block_all() {
local client_ip="$1" client_name="$2"
iptables -A FORWARD -s "$client_ip" -j LOG --log-prefix "wgctl-dropped: " --log-level 4
iptables -A FORWARD -s "$client_ip" -j DROP
log::debug "Blocked all traffic from: ${client_ip}"
}
function firewall::unblock_all() {
local client_ip="$1"
iptables -D FORWARD -s "$client_ip" -j LOG --log-prefix "wgctl-dropped: " --log-level 4 2>/dev/null || true
iptables -D FORWARD -s "$client_ip" -j DROP 2>/dev/null || true
monitor::unwatch "$client_ip"
log::debug "Unblocked all traffic from: ${client_ip}"
}
function firewall::apply_guest_dns_redirect() {
if iptables -t nat -C PREROUTING -s "$(config::subnet_for guest).0/24" -p udp --dport 53 -j DNAT --to-destination "$(config::dns):53" 2>/dev/null; then
log::wg "Guest DNS redirect already applied"
return 0
fi
local guest_subnet dns
guest_subnet="$(config::subnet_for "guest").0/24"
dns="$(config::dns)"
# Log DNS bypass attempts (queries not directed at Pi-hole)
iptables -t nat -A PREROUTING -s "$guest_subnet" -p udp --dport 53 \
! -d "$dns" \
-j LOG --log-prefix "wgctl-dns-redirect: " --log-level 4
iptables -t nat -A PREROUTING -s "$guest_subnet" -p tcp --dport 53 \
! -d "$dns" \
-j LOG --log-prefix "wgctl-dns-redirect: " --log-level 4
# Redirect all DNS to Pi-hole
iptables -t nat -A PREROUTING -s "$guest_subnet" -p udp --dport 53 -j DNAT --to-destination "${dns}:53"
iptables -t nat -A PREROUTING -s "$guest_subnet" -p tcp --dport 53 -j DNAT --to-destination "${dns}:53"
log::wg_block "Guest DNS redirected to Pi-hole (${dns}), bypass attempts will be logged"
}
function firewall::remove_guest_dns_redirect() {
local guest_subnet dns
guest_subnet="$(config::subnet_for "guest").0/24"
dns="$(config::dns)"
iptables -t nat -D PREROUTING -s "$guest_subnet" -p udp --dport 53 \
! -d "$dns" \
-j LOG --log-prefix "wgctl-dns-redirect: " --log-level 4 2>/dev/null || true
iptables -t nat -D PREROUTING -s "$guest_subnet" -p tcp --dport 53 \
! -d "$dns" \
-j LOG --log-prefix "wgctl-dns-redirect: " --log-level 4 2>/dev/null || true
iptables -t nat -D PREROUTING -s "$guest_subnet" -p udp --dport 53 -j DNAT --to-destination "${dns}:53" 2>/dev/null || true
iptables -t nat -D PREROUTING -s "$guest_subnet" -p tcp --dport 53 -j DNAT --to-destination "${dns}:53" 2>/dev/null || true
log::debug "Removed guest DNS redirect"
}
| 1 | function firewall::block_ip_logged() { |
| 2 | local client_ip="$1" target_ip="$2" |
| 3 | |
| 4 | iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -j LOG --log-prefix "wgctl-dropped: " --log-level 4 |
| 5 | iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -j DROP |
| 6 | log::wg_block "Blocked ${client_ip} → ${target_ip} (logged)" |
| 7 | } |
| 8 | function firewall::unblock_ip() { |
| 9 | local client_ip="$1" target_ip="$2" |
| 10 | |
| 11 | iptables -D FORWARD -s "$client_ip" -d "$target_ip" -j LOG --log-prefix "wgctl-dropped: " --log-level 4 2>/dev/null || true |
| 12 | iptables -D FORWARD -s "$client_ip" -d "$target_ip" -j DROP 2>/dev/null || true |
| 13 | } |
| 14 | function firewall::block_all() { |
| 15 | local client_ip="$1" client_name="$2" |
| 16 | |
| 17 | iptables -A FORWARD -s "$client_ip" -j LOG --log-prefix "wgctl-dropped: " --log-level 4 |
| 18 | iptables -A FORWARD -s "$client_ip" -j DROP |
| 19 | |
| 20 | log::debug "Blocked all traffic from: ${client_ip}" |
| 21 | } |
| 22 | function firewall::unblock_all() { |
| 23 | local client_ip="$1" |
| 24 | |
| 25 | iptables -D FORWARD -s "$client_ip" -j LOG --log-prefix "wgctl-dropped: " --log-level 4 2>/dev/null || true |
| 26 | iptables -D FORWARD -s "$client_ip" -j DROP 2>/dev/null || true |
| 27 | |
| 28 | monitor::unwatch "$client_ip" |
| 29 | log::debug "Unblocked all traffic from: ${client_ip}" |
| 30 | } |
| 31 | function firewall::apply_guest_dns_redirect() { |
| 32 | if iptables -t nat -C PREROUTING -s "$(config::subnet_for guest).0/24" -p udp --dport 53 -j DNAT --to-destination "$(config::dns):53" 2>/dev/null; then |
| 33 | log::wg "Guest DNS redirect already applied" |
| 34 | return 0 |
| 35 | fi |
| 36 | |
| 37 | local guest_subnet dns |
| 38 | guest_subnet="$(config::subnet_for "guest").0/24" |
| 39 | dns="$(config::dns)" |
| 40 | |
| 41 | # Log DNS bypass attempts (queries not directed at Pi-hole) |
| 42 | iptables -t nat -A PREROUTING -s "$guest_subnet" -p udp --dport 53 \ |
| 43 | ! -d "$dns" \ |
| 44 | -j LOG --log-prefix "wgctl-dns-redirect: " --log-level 4 |
| 45 | iptables -t nat -A PREROUTING -s "$guest_subnet" -p tcp --dport 53 \ |
| 46 | ! -d "$dns" \ |
| 47 | -j LOG --log-prefix "wgctl-dns-redirect: " --log-level 4 |
| 48 | |
| 49 | # Redirect all DNS to Pi-hole |
| 50 | iptables -t nat -A PREROUTING -s "$guest_subnet" -p udp --dport 53 -j DNAT --to-destination "${dns}:53" |
| 51 | iptables -t nat -A PREROUTING -s "$guest_subnet" -p tcp --dport 53 -j DNAT --to-destination "${dns}:53" |
| 52 | |
| 53 | log::wg_block "Guest DNS redirected to Pi-hole (${dns}), bypass attempts will be logged" |
| 54 | } |
| 55 | function firewall::remove_guest_dns_redirect() { |
| 56 | local guest_subnet dns |
| 57 | guest_subnet="$(config::subnet_for "guest").0/24" |
| 58 | dns="$(config::dns)" |
| 59 | |
| 60 | iptables -t nat -D PREROUTING -s "$guest_subnet" -p udp --dport 53 \ |
| 61 | ! -d "$dns" \ |
| 62 | -j LOG --log-prefix "wgctl-dns-redirect: " --log-level 4 2>/dev/null || true |
| 63 | iptables -t nat -D PREROUTING -s "$guest_subnet" -p tcp --dport 53 \ |
| 64 | ! -d "$dns" \ |
| 65 | -j LOG --log-prefix "wgctl-dns-redirect: " --log-level 4 2>/dev/null || true |
| 66 | iptables -t nat -D PREROUTING -s "$guest_subnet" -p udp --dport 53 -j DNAT --to-destination "${dns}:53" 2>/dev/null || true |
| 67 | iptables -t nat -D PREROUTING -s "$guest_subnet" -p tcp --dport 53 -j DNAT --to-destination "${dns}:53" 2>/dev/null || true |
| 68 | |
| 69 | log::debug "Removed guest DNS redirect" |
| 70 | } |