reject -- * * 0.0.0.0/0 0.0.0.0/0 reject-witch icmp-host-prohibited
时间: 2024-01-22 20:36:38 浏览: 28
这是一条 iptables 规则,用于拒绝所有来源和目标地址的网络流量,并发送一个 ICMP Host Prohibited 消息。该规则如下所示:
```
reject -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited
```
该规则中的各个部分含义如下:
- `reject`:表示该规则将会拒绝匹配的网络流量。
- `--`:表示接下来的参数是匹配规则,而不是 iptables 命令的选项。
- `*`:表示匹配所有的 IP 协议(TCP、UDP、ICMP等)。
- `*`:表示匹配所有的网络接口。
- `0.0.0.0/0`:表示匹配所有的来源 IP 地址。
- `0.0.0.0/0`:表示匹配所有的目标 IP 地址。
- `reject-with icmp-host-prohibited`:表示如果匹配该规则,将发送一个 ICMP Host Prohibited 消息。
该规则的作用是拒绝所有的网络流量,并发送一个 ICMP Host Prohibited 消息告诉发送端请求被拒绝。这条规则通常在防火墙的最后一条,作为默认规则,用于阻止所有未被允许的流量。
相关问题
weave launch --nickame docker-weave WARNING: existing iptables rule '-A FORWARD -j REJECT --reject-with icmp-host-prohibited' will block name resolution via weaveDNS - please reconfigure your firewall. The weave container has died. Consult the container logs for further details.
It looks like there is a typo in your command. The correct syntax is `weave launch --nickname docker-weave`.
As for the warning message, it suggests that there is an existing iptables rule that might block name resolution via WeaveDNS. You should modify your firewall settings to allow traffic on the appropriate ports or remove the existing iptables rule to fix this issue.
Additionally, if the Weave container continues to die, you should check the container logs for further details on the cause of the failure. You can view the logs by running the following command:
```
docker logs <container_name_or_id>
```
Once you have identified the issue, you can work on resolving it and relaunching the Weave network.
.git-credentials
.git-credentials文件是用于保存在使用Git命令进行远程操作时所需的用户名和密码的凭证文件。正常情况下,当我们通过Git命令进行远程操作时,会提示输入用户名和密码,并且验证成功后,这些凭证会自动保存到默认的.git-credentials文件中。该文件的存储格式为:http://username:password@git.jd.com。
如果需要删除不需要的凭证,可以直接修改~/.git-credentials文件,删除相应的凭证信息;也可以使用命令来删除凭证,其中空行代表命令结束。例如,使用以下命令可以删除指定的凭证:git credential reject protocol=http host=git.jd.com。
执行上述命令后,会在Git的全局配置文件~/.gitconfig中添加如下内容:[credential] helper = osxkeychain。这表示使用osxkeychain作为凭证助手来管理凭证信息。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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