我想屏蔽除特定国家/地区以外的所有 IP 地址。因此，我安装了 ipset 并从 ipdeny.com 下载了 IP 范围列表，然后执行以下操作：
ipset create allow-list hash:net
for i in $( cat /home/pi/firewall/country-aggregated.zone ); do sudo ipset -A allow-list $i; done
如果我执行“sudo ipset list”：
Name: allow-list
Type: hash:net
Revision: 6
Header: family inet hashsize 1024 maxelem 65536
Size in memory: 5408
References: 0
Number of entries: 97
Members:
89.183.60.0/22
etc...
然后我必须向 DOCKER-USER 和 INPUT 添加一条规则来阻止所有服务。为了测试它，我屏蔽了国家/地区并测试我是否可以访问服务，结果仍然可以。所以我的配置有问题。
sudo iptables -I DOCKER-USER -m set --match-set allow-list src -j DROP
sudo iptables -A INPUT -m set --match-set allow-list src -j DROP
我的 iptable 过滤表（iptables -L -v -n）带有 DOCKER-USER 链和 INPUT 链，如下所示：
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
310 19940 ACCEPT all -- * * 192.168.1.102 0.0.0.0/0
0 0 DROP all -- * * 0.0.0.0/0 0.0.0.0/0 match-set allow-list src
Chain FORWARD (policy DROP 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
3564K 2076M DOCKER-USER all -- * * 0.0.0.0/0 0.0.0.0/0
3564K 2076M DOCKER-ISOLATION-STAGE-1 all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT all -- * docker0 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
0 0 DOCKER all -- * docker0 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT all -- docker0 !docker0 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT all -- docker0 docker0 0.0.0.0/0 0.0.0.0/0
5350 2397K ACCEPT all -- * br-c80792c5d0cc 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
6261 414K DOCKER all -- * br-c80792c5d0cc 0.0.0.0/0 0.0.0.0/0
11135 1009K ACCEPT all -- br-c80792c5d0cc !br-c80792c5d0cc 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT all -- br-c80792c5d0cc br-c80792c5d0cc 0.0.0.0/0 0.0.0.0/0
3037K 1724M ACCEPT all -- * br-89ecb09e5185 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
29923 1796K DOCKER all -- * br-89ecb09e5185 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT all -- br-89ecb09e5185 !br-89ecb09e5185 0.0.0.0/0 0.0.0.0/0
29923 1796K ACCEPT all -- br-89ecb09e5185 br-89ecb09e5185 0.0.0.0/0 0.0.0.0/0
69 10621 ACCEPT all -- * br-451331e576b8 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
10 1222 DOCKER all -- * br-451331e576b8 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT all -- br-451331e576b8 !br-451331e576b8 0.0.0.0/0 0.0.0.0/0
10 1222 ACCEPT all -- br-451331e576b8 br-451331e576b8 0.0.0.0/0 0.0.0.0/0
349K 210M ACCEPT all -- * br-2db6a76ed3c5 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
31128 1866K DOCKER all -- * br-2db6a76ed3c5 0.0.0.0/0 0.0.0.0/0
94113 135M ACCEPT all -- br-2db6a76ed3c5 !br-2db6a76ed3c5 0.0.0.0/0 0.0.0.0/0
29958 1798K ACCEPT all -- br-2db6a76ed3c5 br-2db6a76ed3c5 0.0.0.0/0 0.0.0.0/0
Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain DOCKER (5 references)
pkts bytes target prot opt in out source destination
1170 68000 ACCEPT tcp -- !br-2db6a76ed3c5 br-2db6a76ed3c5 0.0.0.0/0 172.25.0.2 tcp dpt:8080
0 0 ACCEPT tcp -- !br-c80792c5d0cc br-c80792c5d0cc 0.0.0.0/0 172.28.0.2 tcp dpt:443
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.2 tcp dpt:30009
0 0 ACCEPT tcp -- !br-451331e576b8 br-451331e576b8 0.0.0.0/0 172.20.0.3 tcp dpt:80
0 0 ACCEPT tcp -- !br-c80792c5d0cc br-c80792c5d0cc 0.0.0.0/0 172.28.0.2 tcp dpt:80
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.2 tcp dpt:30008
0 0 ACCEPT udp -- !br-c80792c5d0cc br-c80792c5d0cc 0.0.0.0/0 172.28.0.2 udp dpt:67
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.2 tcp dpt:30007
0 0 ACCEPT tcp -- !br-c80792c5d0cc br-c80792c5d0cc 0.0.0.0/0 172.28.0.2 tcp dpt:53
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.2 tcp dpt:30006
6261 414K ACCEPT udp -- !br-c80792c5d0cc br-c80792c5d0cc 0.0.0.0/0 172.28.0.2 udp dpt:53
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.2 tcp dpt:30005
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.2 tcp dpt:30004
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.2 tcp dpt:30003
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.2 tcp dpt:3000Chain PREROUTING (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination2
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.2 tcp dpt:30001
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.2 tcp dpt:30000
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.2 tcp dpt:21
Chain DOCKER-ISOLATION-STAGE-1 (1 references)
pkts bytes target prot opt in out source destination
0 0 DOCKER-ISOLATION-STAGE-2 all -- docker0 !docker0 0.0.0.0/0 0.0.0.0/0
11135 1009K DOCKER-ISOLATION-STAGE-2 all -- br-c80792c5d0cc !br-c80792c5d0cc 0.0.0.0/0 0.0.0.0/0
0 0 DOCKER-ISOLATION-STAGE-2 all -- br-89ecb09e5185 !br-89ecb09e5185 0.0.0.0/0 0.0.0.0/0
0 0 DOCKER-ISOLATION-STAGE-2 all -- br-451331e576b8 !br-451331e576b8 0.0.0.0/0 0.0.0.0/0
94113 135M DOCKER-ISOLATION-STAGE-2 all -- br-2db6a76ed3c5 !br-2db6a76ed3c5 0.0.0.0/0 0.0.0.0/0
3564K 2076M RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Chain DOCKER-ISOLATION-STAGE-2 (5 references)
pkts bytes target prot opt in out source destination
0 0 DROP all -- * docker0 0.0.0.0/0 0.0.0.0/0
0 0 DROP all -- * br-c80792c5d0cc 0.0.0.0/0 0.0.0.0/0
0 0 DROP all -- * br-89ecb09e5185 0.0.0.0/0 0.0.0.0/0
0 0 DROP all -- * br-451331e576b8 0.0.0.0/0 0.0.0.0/0
0 0 DROP all -- * br-2db6a76ed3c5 0.0.0.0/0 0.0.0.0/0
105K 136M RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Chain DOCKER-USER (1 references)
pkts bytes target prot opt in out source destination
0 0 DROP all -- * * 0.0.0.0/0 0.0.0.0/0 match-set allow-list src
1831K 1083M RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
nat 表（iptables -t nat -nvL）
Chain PREROUTING (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
7467 484K DOCKER all -- * * 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type LOCAL
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain POSTROUTING (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
0 0 MASQUERADE all -- * !docker0 172.17.0.0/16 0.0.0.0/0
3957 267K MASQUERADE all -- * !br-c80792c5d0cc 172.28.0.0/16 0.0.0.0/0
0 0 MASQUERADE all -- * !br-89ecb09e5185 172.24.0.0/16 0.0.0.0/0
0 0 MASQUERADE all -- * !br-451331e576b8 172.20.0.0/16 0.0.0.0/0
5 392 MASQUERADE all -- * !br-2db6a76ed3c5 172.25.0.0/16 0.0.0.0/0
0 0 MASQUERADE tcp -- * * 172.25.0.2 172.25.0.2 tcp dpt:8080
0 0 MASQUERADE tcp -- * * 172.28.0.2 172.28.0.2 tcp dpt:443
0 0 MASQUERADE tcp -- * * 172.17.0.2 172.17.0.2 tcp dpt:30009
0 0 MASQUERADE tcp -- * * 172.20.0.3 172.20.0.3 tcp dpt:80
0 0 MASQUERADE tcp -- * * 172.28.0.2 172.28.0.2 tcp dpt:80
0 0 MASQUERADE tcp -- * * 172.17.0.2 172.17.0.2 tcp dpt:30008
0 0 MASQUERADE udp -- * * 172.28.0.2 172.28.0.2 udp dpt:67
0 0 MASQUERADE tcp -- * * 172.17.0.2 172.17.0.2 tcp dpt:30007
0 0 MASQUERADE tcp -- * * 172.28.0.2 172.28.0.2 tcp dpt:53
0 0 MASQUERADE tcp -- * * 172.17.0.2 172.17.0.2 tcp dpt:30006
0 0 MASQUERADE udp -- * * 172.28.0.2 172.28.0.2 udp dpt:53
0 0 MASQUERADE tcp -- * * 172.17.0.2 172.17.0.2 tcp dpt:30005
0 0 MASQUERADE tcp -- * * 172.17.0.2 172.17.0.2 tcp dpt:30004
0 0 MASQUERADE tcp -- * * 172.17.0.2 172.17.0.2 tcp dpt:30003
0 0 MASQUERADE tcp -- * * 172.17.0.2 172.17.0.2 tcp dpt:30002
0 0 MASQUERADE tcp -- * * 172.17.0.2 172.17.0.2 tcp dpt:30001
0 0 MASQUERADE tcp -- * * 172.17.0.2 172.17.0.2 tcp dpt:30000
0 0 MASQUERADE tcp -- * * 172.17.0.2 172.17.0.2 tcp dpt:21
Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
21 1407 DOCKER all -- * * 0.0.0.0/0 !127.0.0.0/8 ADDRTYPE match dst-type LOCAL
Chain DOCKER (2 references)
pkts bytes target prot opt in out source destination
0 0 RETURN all -- docker0 * 0.0.0.0/0 0.0.0.0/0
0 0 RETURN all -- br-c80792c5d0cc * 0.0.0.0/0 0.0.0.0/0
0 0 RETURN all -- br-89ecb09e5185 * 0.0.0.0/0 0.0.0.0/0
0 0 RETURN all -- br-451331e576b8 * 0.0.0.0/0 0.0.0.0/0
0 0 RETURN all -- br-2db6a76ed3c5 * 0.0.0.0/0 0.0.0.0/0
1195 69492 DNAT tcp -- !br-2db6a76ed3c5 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:8080 to:172.25.0.2:8080
0 0 DNAT tcp -- !br-c80792c5d0cc * 0.0.0.0/0 0.0.0.0/0 tcp dpt:443 to:172.28.0.2:443
0 0 DNAT tcp -- !docker0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:30009 to:172.17.0.2:30009
0 0 DNAT tcp -- !br-451331e576b8 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:6875 to:172.20.0.3:80
0 0 DNAT tcp -- !br-c80792c5d0cc * 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 to:172.28.0.2:80
0 0 DNAT tcp -- !docker0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:30008 to:172.17.0.2:30008
0 0 DNAT udp -- !br-c80792c5d0cc * 0.0.0.0/0 0.0.0.0/0 udp dpt:67 to:172.28.0.2:67
0 0 DNAT tcp -- !docker0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:30007 to:172.17.0.2:30007
0 0 DNAT tcp -- !br-c80792c5d0cc * 0.0.0.0/0 0.0.0.0/0 tcp dpt:53 to:172.28.0.2:53
0 0 DNAT tcp -- !docker0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:30006 to:172.17.0.2:30006
6253 413K DNAT udp -- !br-c80792c5d0cc * 0.0.0.0/0 0.0.0.0/0 udp dpt:53 to:172.28.0.2:53
0 0 DNAT tcp -- !docker0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:30005 to:172.17.0.2:30005
0 0 DNAT tcp -- !docker0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:30004 to:172.17.0.2:30004
0 0 DNAT tcp -- !docker0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:30003 to:172.17.0.2:30003
0 0 DNAT tcp -- !docker0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:30002 to:172.17.0.2:30002
0 0 DNAT tcp -- !docker0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:30001 to:172.17.0.2:30001
0 0 DNAT tcp -- !docker0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:30000 to:172.17.0.2:30000
0 0 DNAT tcp -- !docker0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:21 to:172.17.0.2:21
mangle 表（iptables -t mangle -L -nv）：
Chain PREROUTING (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain POSTROUTING (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
原始表：
Chain PREROUTING (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
服务器是树莓派。
可能是什么问题呢？
答案1
我跟我的 ISP 谈过，这是他们的错。他们的网络很奇怪。所以我总是只能从每个到达的包裹中获取一个内部 IP 地址。