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服务器支持IPv6

obaby

发布于 2023-02-28 02:50:58

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代码可运行

文章被收录于专栏：obaby@marsobaby@mars

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代码可运行

这几天一直提示服务器即将过期，直到今天上班才又看了下，结果发现真的快过期了。于是就想着续费，结果算了一下一年2000多，这尼码好贵啊。问题是根本不值啊，虽然挂了好几个站。而之所以服务器变得这么贵是因为去年的时候实在受不了服务器越来越卡，直接升级配置，结果升级到现在就成了这个样子了。这就很离谱啊。

这也太离谱啦，降低支配之后还要1600.于是果断的重新开启了一台新的服务器。为了更方便的迁移数据可以直接使用现有的系统盘创建一个自定义镜像，新服务器直接使用创建的镜像启动就ok了，无需做任何的数据迁移。配置完成之后呢，发现实例支持ipv6了，于是顺便开启了一下ipv6。在he.net设置解析之后等了半天没生效，后来发现用的服务器还在阿里云。

问题是竟然没报错，这就很神奇啊。在阿里云重新添加解析之后就ok了。等了十几分钟生效之后发现AAAA记录有了，但是访问端口80不通。初步怀疑是组策略问题，组策略添加之后依然不通。通过 iptables可以看到端口是开放的。

root@hack:/home/wwwroot/h4ck# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
ACCEPT tcp -- anywhere anywhere tcp dpt:ssh
ACCEPT tcp -- anywhere anywhere tcp dpt:http
ACCEPT tcp -- anywhere anywhere tcp dpt:https
DROP tcp -- anywhere anywhere tcp dpt:mysql
ACCEPT icmp -- anywhere anywhere icmp echo-request

Chain FORWARD (policy DROP)
target prot opt source destination
DOCKER-USER all -- anywhere anywhere
DOCKER-ISOLATION-STAGE-1 all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

Chain DOCKER (1 references)
target prot opt source destination
ACCEPT tcp -- anywhere 172.17.0.2 tcp dpt:3001

Chain DOCKER-ISOLATION-STAGE-1 (1 references)
target prot opt source destination
DOCKER-ISOLATION-STAGE-2 all -- anywhere anywhere
RETURN all -- anywhere anywhere

Chain DOCKER-ISOLATION-STAGE-2 (1 references)
target prot opt source destination
DROP all -- anywhere anywhere
RETURN all -- anywhere anywhere

Chain DOCKER-USER (1 references)
target prot opt source destination
RETURN all -- anywhere anywhere

但是iptables对应还有v6的半天，组策略添加之后并没有自动添加相关的端口规则：

root@hack:/home/wwwroot/h4ck# ip6tables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

通过下面的命令添加策略：

ip6tables -A INPUT -p tcp --dport 80 -j ACCEPT
ip6tables -A INPUT -p tcp --dport 443 -j ACCEPT
ip6tables -A INPUT -p tcp --dport 3306 -j ACCEPT

再次查看就ok了：

root@hack:/home/wwwroot/h4ck# ip6tables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT tcp anywhere anywhere tcp dpt:http
ACCEPT tcp anywhere anywhere tcp dpt:https
ACCEPT tcp anywhere anywhere tcp dpt:mysql

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination