这是一个创建于 690 天前的主题，其中的信息可能已经有所发展或是发生改变。
系统是 centos7 ，firewall 关闭了的
[root@localhost init.d]# systemctl status firewalld.service
● firewalld.service
Loaded: masked (/dev/null; bad)
Active: inactive (dead) since 四 2022-10-27 15:08:38 CST; 2 months 7 days ago
Main PID: 7533 (code=exited, status=0/SUCCESS)
Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.
有一个 iptables 可以使用，但并不是 service
[root@localhost init.d]# service iptables save
The service command supports only basic LSB actions (start, stop, restart, try-restart, reload, force-reload, status). For other actions, please try to use systemctl.
[root@localhost init.d]# iptables -nvL
Chain INPUT (policy ACCEPT 382K packets, 216M bytes)
pkts bytes target prot opt in out source destination
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:3307
0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:1881
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
0 0 DOCKER-USER all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 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
Chain OUTPUT (policy ACCEPT 206K packets, 190M bytes)
pkts bytes target prot opt in out source destination
Chain DOCKER (1 references)
pkts bytes target prot opt in out source destination
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.2 tcp dpt:9000
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.3 tcp dpt:6379
0 0 ACCEPT tcp -- !docker0 docker0 0.0.0.0/0 172.17.0.4 tcp dpt:9000
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
0 0 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Chain DOCKER-ISOLATION-STAGE-2 (1 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 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 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
诡异的是扫描端口，发现 1881 和 3307 没有通，1880 通了的 如果 yum 重新安装 iptables.service ，配置开通 3307 和 1881 后再扫描端口，发现 1880 和 1881 、3307 的 tcp 全部是关闭状态 求大佬解惑
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1
xuanbg 2023-01-03 17:09:35 +08:00
firewalld.service 关掉了吗？
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2
kestrelBright OP @xuanbg 关了的
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AS4694lAS4808 2023-01-03 18:20:14 +08:00
确定端口没绑定到回环上吧？
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gesse 2023-01-03 18:27:18 +08:00
贴出
iptables-save 看看 |
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5
old9 2023-01-03 18:53:44 +08:00 via Android
还有贴下 ss -ant
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chunrix 2023-01-03 19:01:12 +08:00
用诸如以下的命令，将你想要的规则插入到最前面
iptables -I INPUT 1 -p tcp --sport 80 -j ACCEPT 如果依旧不生效，就是没保存吧 iptables-save > /etc/sysconfig/iptables |
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7
YaakovZiv 2023-01-03 19:22:09 +08:00
云主机吗，有宝塔软件吗。
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oneisall8955 2023-01-03 19:28:46 +08:00 via Android
是不是云主机，安全策略组开了吗
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kestrelBright OP @AS4694lAS4808 请教回环是什么意思？ loopback 么？
@gesse ``` [root@localhost ~]# iptables-save # Generated by iptables-save v1.4.21 on Thu Jan 5 09:33:51 2023 *nat :PREROUTING ACCEPT [312443:27129720] :INPUT ACCEPT [312443:27129720] :OUTPUT ACCEPT [383787:24152445] :POSTROUTING ACCEPT [383789:24152565] :DOCKER - [0:0] -A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER -A OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER -A POSTROUTING -s 172.17.0.0/16 ! -o docker0 -j MASQUERADE -A POSTROUTING -s 172.17.0.2/32 -d 172.17.0.2/32 -p tcp -m tcp --dport 9000 -j MASQUERADE -A POSTROUTING -s 172.17.0.3/32 -d 172.17.0.3/32 -p tcp -m tcp --dport 6379 -j MASQUERADE -A POSTROUTING -s 172.17.0.4/32 -d 172.17.0.4/32 -p tcp -m tcp --dport 9000 -j MASQUERADE -A DOCKER -i docker0 -j RETURN -A DOCKER ! -i docker0 -p tcp -m tcp --dport 9000 -j DNAT --to-destination 172.17.0.2:9000 -A DOCKER ! -i docker0 -p tcp -m tcp --dport 6379 -j DNAT --to-destination 172.17.0.3:6379 -A DOCKER ! -i docker0 -p tcp -m tcp --dport 9001 -j DNAT --to-destination 172.17.0.4:9000 COMMIT # Completed on Thu Jan 5 09:33:51 2023 # Generated by iptables-save v1.4.21 on Thu Jan 5 09:33:51 2023 *filter :INPUT ACCEPT [14664149:7555216414] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [8199559:6986569057] :DOCKER - [0:0] :DOCKER-ISOLATION-STAGE-1 - [0:0] :DOCKER-ISOLATION-STAGE-2 - [0:0] :DOCKER-USER - [0:0] -A INPUT -p tcp -m tcp --dport 3307 -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 1881 -j ACCEPT -A FORWARD -j DOCKER-USER -A FORWARD -j DOCKER-ISOLATION-STAGE-1 -A FORWARD -o docker0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT -A FORWARD -o docker0 -j DOCKER -A FORWARD -i docker0 ! -o docker0 -j ACCEPT -A FORWARD -i docker0 -o docker0 -j ACCEPT -A DOCKER -d 172.17.0.2/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 9000 -j ACCEPT -A DOCKER -d 172.17.0.3/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 6379 -j ACCEPT -A DOCKER -d 172.17.0.4/32 ! -i docker0 -o docker0 -p tcp -m tcp --dport 9000 -j ACCEPT -A DOCKER-ISOLATION-STAGE-1 -i docker0 ! -o docker0 -j DOCKER-ISOLATION-STAGE-2 -A DOCKER-ISOLATION-STAGE-1 -j RETURN -A DOCKER-ISOLATION-STAGE-2 -o docker0 -j DROP -A DOCKER-ISOLATION-STAGE-2 -j RETURN -A DOCKER-USER -j RETURN COMMIT ``` @old9 ``` [root@localhost ~]# ss -nat State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 128 *:18090 *:* LISTEN 0 128 *:3307 *:* LISTEN 0 128 *:3308 *:* LISTEN 0 128 *:3309 *:* LISTEN 0 128 *:21453 *:* LISTEN 0 128 *:21454 *:* LISTEN 0 128 *:111 *:* LISTEN 0 128 *:80 *:* LISTEN 0 128 *:6000 *:* LISTEN 0 5 192.168.122.1:53 *:* LISTEN 0 128 *:22 *:* LISTEN 0 128 *:24631 *:* LISTEN 0 128 127.0.0.1:631 *:* LISTEN 0 128 *:24632 *:* LISTEN 0 128 *:1880 *:* LISTEN 0 128 *:1881 *:* LISTEN 0 128 *:801 *:* LISTEN 0 128 *:10050 *:* TIME-WAIT 0 0 1.1.5.19:35706 4.1.8.8:1880 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58260 ESTAB 0 0 1.1.5.19:80 1.2.5.2:50305 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58640 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58526 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58508 TIME-WAIT 0 0 1.1.5.19:36360 4.1.8.8:1880 ESTAB 0 0 1.1.5.19:80 1.2.5.2:50308 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58368 ESTAB 0 0 1.1.5.19:80 1.2.5.2:50309 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58288 ESTAB 0 0 1.1.5.19:22 10.10.4.139:53924 TIME-WAIT 0 0 1.1.5.19:80 2.2.8.176:50335 TIME-WAIT 0 0 1.1.5.19:80 2.2.8.176:50340 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58272 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58656 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58320 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58452 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58304 ESTAB 0 0 1.1.5.19:80 1.2.5.2:50307 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58462 TIME-WAIT 0 0 1.1.5.19:80 2.2.8.176:50341 ESTAB 0 0 1.1.5.19:33678 4.1.8.8:1723 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58432 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58482 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58384 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58606 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58470 TIME-WAIT 0 0 1.1.5.19:36356 4.1.8.8:1880 ESTAB 0 0 1.1.5.19:80 1.2.5.2:50306 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58410 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58676 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58536 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58440 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58338 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58422 TIME-WAIT 0 0 1.1.5.19:36358 4.1.8.8:1880 ESTAB 0 0 1.1.5.19:80 8.1.1.2:58354 LISTEN 0 128 :::9000 :::* LISTEN 0 128 :::9001 :::* LISTEN 0 128 :::6379 :::* LISTEN 0 128 :::111 :::* LISTEN 0 128 :::6000 :::* LISTEN 0 128 :::22 :::* LISTEN 0 128 ::1:631 :::* ``` @chunrix 保存了的 -rw-r--r-- 1 root root 2171 1 月 3 16:57 iptables @YaakovZiv 非云主机，idc 机房的，没有宝塔 @oneisall8955 非云主机 |
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gesse 2023-01-05 10:04:18 +08:00
*filter
:INPUT ACCEPT [14664149:7555216414] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [8199559:6986569057] 你这个默认规则就是 accept ，没有特意 DROP/REJECT 端口都不会阻拦的，而且和 docker 端口也不冲突。找找其他原因。 |
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kestrelBright OP @gesse 好的 谢谢大佬
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