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~修复iptables公网防火墙的bug

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juewuy
2025-12-25 22:48:09 +08:00
parent d1c9bccfbe
commit 3153ea1acc
3 changed files with 20 additions and 6 deletions
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13
scripts/starts/fw_nftables.sh
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@@ -1,11 +1,14 @@
#!/bin/sh
# Copyright (C) Juewuy
HOST_IP=$(echo $host_ipv4 | sed 's/ /, /g')
HOST_IP6=$(echo $host_ipv6 | sed 's/ /, /g')
RESERVED_IP=$(echo $reserve_ipv4 | sed 's/ /, /g')
RESERVED_IP6=$(echo "$reserve_ipv6 $host_ipv6" | sed 's/ /, /g')
start_nft_route() { #nftables-route通用工具
#$1:name $2:hook(prerouting/output) $3:type(nat/mangle/filter) $4:priority(-100/-150)
[ "$common_ports" = "已开启" ] && PORTS=$(echo $multiport | sed 's/,/, /g')
RESERVED_IP=$(echo $reserve_ipv4 | sed 's/ /, /g')
HOST_IP=$(echo $host_ipv4 | sed 's/ /, /g')
[ "$1" = 'output' ] && HOST_IP="127.0.0.0/8, $(echo $local_ipv4 | sed 's/ /, /g')"
[ "$1" = 'prerouting_vm' ] && HOST_IP="$(echo $vm_ipv4 | sed 's/ /, /g')"
#添加新链
@@ -62,8 +65,6 @@ start_nft_route() { #nftables-route通用工具
}
#局域网ipv6支持
if [ "$ipv6_redir" = "已开启" -a "$1" = 'prerouting' -a "$firewall_area" != 5 ]; then
RESERVED_IP6="$(echo "$reserve_ipv6 $host_ipv6" | sed 's/ /, /g')"
HOST_IP6="$(echo $host_ipv6 | sed 's/ /, /g')"
#过滤保留地址及本机地址
nft add rule inet shellcrash $1 ip6 daddr {$RESERVED_IP6} return
#仅代理本机局域网网段流量
@@ -99,8 +100,6 @@ start_nft_route() { #nftables-route通用工具
#nft add rule inet shellcrash local_tproxy log prefix \"pre\" level debug
}
start_nft_dns() { #nftables-dns
HOST_IP=$(echo $host_ipv4 | sed 's/ /, /g')
HOST_IP6=$(echo $host_ipv6 | sed 's/ /, /g')
[ "$1" = 'output' ] && HOST_IP="127.0.0.0/8, $(echo $local_ipv4 | sed 's/ /, /g')"
[ "$1" = 'prerouting_vm' ] && HOST_IP="$(echo $vm_ipv4 | sed 's/ /, /g')"
nft add chain inet shellcrash "$1"_dns { type nat hook $2 priority -100 \; }
@@ -136,6 +135,8 @@ start_nft_wan() { #nftables公网防火墙
}
#端口拦截
reject_ports="{ $mix_port, $db_port, $dns_port }"
nft add rule inet shellcrash input ip saddr {$HOST_IP} accept
nft add rule inet shellcrash input ip6 saddr {$HOST_IP6} accept
nft add rule inet shellcrash input tcp dport $reject_ports reject
nft add rule inet shellcrash input udp dport $reject_ports reject
}