gistfile1.txt
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# ============================================
# Rule Management
# ============================================
function fw::block_ip() {
local client_ip="$1" target_ip="$2"
fw::_forward_exists -s "$client_ip" -d "$target_ip" -j DROP \
|| iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -j DROP
fw::_forward_exists -s "$client_ip" -d "$target_ip" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" \
|| iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:"
}
function fw::unblock_ip() {
local client_ip="$1" target_ip="$2"
fw::_forward_exists -s "$client_ip" -d "$target_ip" -j LOG --log-prefix "wgctl-dropped:" \
&& iptables -D FORWARD -s "$client_ip" -d "$target_ip" -j LOG --log-prefix "wgctl-dropped: " --log-level 4 2>/dev/null || true
fw::_forward_exists -s "$client_ip" -d "$target_ip" -j DROP \
&& iptables -D FORWARD -s "$client_ip" -d "$target_ip" -j DROP 2>/dev/null || true
}
function fw::block_port() {
local client_ip="$1" target_ip="$2" port="$3" proto="${4:-tcp}"
fw::_forward_exists -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j DROP \
|| iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j DROP
fw::_forward_exists -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" \
|| iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:"
}
function fw::unblock_port() {
local client_ip="$1" target_ip="$2" port="$3" proto="${4:-tcp}"
fw::_forward_exists -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j DROP \
&& iptables -D FORWARD -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j DROP 2>/dev/null || true
}
function fw::block_all() {
local client_ip="$1" client_name="$2"
iptables -A FORWARD -s "$client_ip" -j DROP
log::debug "Blocked all traffic from: ${client_ip}"
}
function fw::unblock_all() {
local client_ip="$1"
iptables -D FORWARD -s "$client_ip" -j DROP 2>/dev/null || true
monitor::unwatch "$client_ip"
log::debug "Unblocked all traffic from: ${client_ip}"
}
function fw::block_subnet() {
local client_ip="$1" target_subnet="$2"
fw::_forward_exists -s "$client_ip" -d "$target_subnet" -j DROP \
|| iptables -A FORWARD -s "$client_ip" -d "$target_subnet" -j DROP
fw::_forward_exists -s "$client_ip" -d "$target_subnet" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" \
|| iptables -A FORWARD -s "$client_ip" -d "$target_subnet" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:"
log::wg_block "Blocked ${client_ip} → subnet ${target_subnet}"
}
function fw::unblock_subnet() {
local client_ip="$1" target_subnet="$2"
fw::_forward_exists -s "$client_ip" -d "$target_subnet" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" \
&& iptables -D FORWARD -s "$client_ip" -d "$target_subnet" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" 2>/dev/null || true
fw::_forward_exists -s "$client_ip" -d "$target_subnet" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" \
&& iptables -D FORWARD -s "$client_ip" -d "$target_subnet" -j DROP 2>/dev/null || true
log::wg_unblock "Unblocked ${client_ip} → subnet ${target_subnet}"
}
function fw::allow_ip() {
local client_ip="$1" target_ip="$2"
fw::_forward_exists -s "$client_ip" -d "$target_ip" -j ACCEPT \
|| iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -j ACCEPT
}
function fw::unallow_ip() {
local client_ip="$1" target_ip="$2"
fw::_forward_exists -s "$client_ip" -d "$target_ip" -j ACCEPT \
&& iptables -D FORWARD -s "$client_ip" -d "$target_ip" -j ACCEPT 2>/dev/null || true
}
function fw::allow_port() {
local client_ip="$1" target_ip="$2" port="$3" proto="${4:-tcp}"
fw::_forward_exists -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j ACCEPT \
|| iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j ACCEPT
}
function fw::unallow_port() {
local client_ip="$1" target_ip="$2" port="$3" proto="${4:-tcp}"
fw::_forward_exists -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j ACCEPT \
&& iptables -D FORWARD -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j ACCEPT 2>/dev/null || true
}
function fw::flush_peer() {
local client_ip="${1:?client_ip required}"
log::debug "flush_peer: starting for $client_ip"
# Collect line numbers into array
local linenums=()
while IFS= read -r linenum; do
[[ -n "$linenum" ]] && linenums+=("$linenum")
done < <(iptables -L FORWARD -n --line-numbers | grep -F "$client_ip" | awk '{print $1}')
# Delete in reverse order (highest number first)
local count=0
local i
for (( i=${#linenums[@]}-1; i>=0; i-- )); do
iptables -D FORWARD "${linenums[$i]}" 2>/dev/null || true
(( count++ )) || true
done
log::debug "flush_peer: removed $count FORWARD rules for: $client_ip"
}
| 1 | |
| 2 | # ============================================ |
| 3 | # Rule Management |
| 4 | # ============================================ |
| 5 | |
| 6 | function fw::block_ip() { |
| 7 | local client_ip="$1" target_ip="$2" |
| 8 | fw::_forward_exists -s "$client_ip" -d "$target_ip" -j DROP \ |
| 9 | || iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -j DROP |
| 10 | |
| 11 | fw::_forward_exists -s "$client_ip" -d "$target_ip" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" \ |
| 12 | || iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" |
| 13 | } |
| 14 | |
| 15 | function fw::unblock_ip() { |
| 16 | local client_ip="$1" target_ip="$2" |
| 17 | |
| 18 | fw::_forward_exists -s "$client_ip" -d "$target_ip" -j LOG --log-prefix "wgctl-dropped:" \ |
| 19 | && iptables -D FORWARD -s "$client_ip" -d "$target_ip" -j LOG --log-prefix "wgctl-dropped: " --log-level 4 2>/dev/null || true |
| 20 | |
| 21 | fw::_forward_exists -s "$client_ip" -d "$target_ip" -j DROP \ |
| 22 | && iptables -D FORWARD -s "$client_ip" -d "$target_ip" -j DROP 2>/dev/null || true |
| 23 | } |
| 24 | |
| 25 | function fw::block_port() { |
| 26 | local client_ip="$1" target_ip="$2" port="$3" proto="${4:-tcp}" |
| 27 | |
| 28 | fw::_forward_exists -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j DROP \ |
| 29 | || iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j DROP |
| 30 | |
| 31 | fw::_forward_exists -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" \ |
| 32 | || iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" |
| 33 | } |
| 34 | |
| 35 | function fw::unblock_port() { |
| 36 | local client_ip="$1" target_ip="$2" port="$3" proto="${4:-tcp}" |
| 37 | |
| 38 | fw::_forward_exists -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j DROP \ |
| 39 | && iptables -D FORWARD -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j DROP 2>/dev/null || true |
| 40 | } |
| 41 | |
| 42 | function fw::block_all() { |
| 43 | local client_ip="$1" client_name="$2" |
| 44 | |
| 45 | iptables -A FORWARD -s "$client_ip" -j DROP |
| 46 | |
| 47 | log::debug "Blocked all traffic from: ${client_ip}" |
| 48 | } |
| 49 | |
| 50 | function fw::unblock_all() { |
| 51 | local client_ip="$1" |
| 52 | |
| 53 | iptables -D FORWARD -s "$client_ip" -j DROP 2>/dev/null || true |
| 54 | |
| 55 | monitor::unwatch "$client_ip" |
| 56 | log::debug "Unblocked all traffic from: ${client_ip}" |
| 57 | } |
| 58 | |
| 59 | function fw::block_subnet() { |
| 60 | local client_ip="$1" target_subnet="$2" |
| 61 | |
| 62 | fw::_forward_exists -s "$client_ip" -d "$target_subnet" -j DROP \ |
| 63 | || iptables -A FORWARD -s "$client_ip" -d "$target_subnet" -j DROP |
| 64 | |
| 65 | fw::_forward_exists -s "$client_ip" -d "$target_subnet" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" \ |
| 66 | || iptables -A FORWARD -s "$client_ip" -d "$target_subnet" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" |
| 67 | |
| 68 | log::wg_block "Blocked ${client_ip} → subnet ${target_subnet}" |
| 69 | } |
| 70 | |
| 71 | function fw::unblock_subnet() { |
| 72 | local client_ip="$1" target_subnet="$2" |
| 73 | |
| 74 | fw::_forward_exists -s "$client_ip" -d "$target_subnet" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" \ |
| 75 | && iptables -D FORWARD -s "$client_ip" -d "$target_subnet" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" 2>/dev/null || true |
| 76 | |
| 77 | fw::_forward_exists -s "$client_ip" -d "$target_subnet" -j NFLOG --nflog-group 1 --nflog-prefix "wgctl-drop:" \ |
| 78 | && iptables -D FORWARD -s "$client_ip" -d "$target_subnet" -j DROP 2>/dev/null || true |
| 79 | |
| 80 | log::wg_unblock "Unblocked ${client_ip} → subnet ${target_subnet}" |
| 81 | } |
| 82 | |
| 83 | function fw::allow_ip() { |
| 84 | local client_ip="$1" target_ip="$2" |
| 85 | |
| 86 | fw::_forward_exists -s "$client_ip" -d "$target_ip" -j ACCEPT \ |
| 87 | || iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -j ACCEPT |
| 88 | } |
| 89 | |
| 90 | function fw::unallow_ip() { |
| 91 | local client_ip="$1" target_ip="$2" |
| 92 | |
| 93 | fw::_forward_exists -s "$client_ip" -d "$target_ip" -j ACCEPT \ |
| 94 | && iptables -D FORWARD -s "$client_ip" -d "$target_ip" -j ACCEPT 2>/dev/null || true |
| 95 | } |
| 96 | |
| 97 | function fw::allow_port() { |
| 98 | local client_ip="$1" target_ip="$2" port="$3" proto="${4:-tcp}" |
| 99 | |
| 100 | fw::_forward_exists -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j ACCEPT \ |
| 101 | || iptables -I FORWARD 1 -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j ACCEPT |
| 102 | } |
| 103 | |
| 104 | function fw::unallow_port() { |
| 105 | local client_ip="$1" target_ip="$2" port="$3" proto="${4:-tcp}" |
| 106 | |
| 107 | fw::_forward_exists -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j ACCEPT \ |
| 108 | && iptables -D FORWARD -s "$client_ip" -d "$target_ip" -p "$proto" --dport "$port" -j ACCEPT 2>/dev/null || true |
| 109 | } |
| 110 | |
| 111 | function fw::flush_peer() { |
| 112 | local client_ip="${1:?client_ip required}" |
| 113 | log::debug "flush_peer: starting for $client_ip" |
| 114 | |
| 115 | # Collect line numbers into array |
| 116 | local linenums=() |
| 117 | while IFS= read -r linenum; do |
| 118 | [[ -n "$linenum" ]] && linenums+=("$linenum") |
| 119 | done < <(iptables -L FORWARD -n --line-numbers | grep -F "$client_ip" | awk '{print $1}') |
| 120 | |
| 121 | # Delete in reverse order (highest number first) |
| 122 | local count=0 |
| 123 | local i |
| 124 | for (( i=${#linenums[@]}-1; i>=0; i-- )); do |
| 125 | iptables -D FORWARD "${linenums[$i]}" 2>/dev/null || true |
| 126 | (( count++ )) || true |
| 127 | done |
| 128 | |
| 129 | log::debug "flush_peer: removed $count FORWARD rules for: $client_ip" |
| 130 | } |