--reject-with用于指定reject动作时发送的ICMP错误消息类型。 icmp-host-prohibited是ICMP错误消息的一种,表示目标主机被禁止访问。发送方收到这个错误消息后,会知道目标主机拒绝了数据包的接收。 总结整个命令对数据包的处理方式: 这条命令的作用是在FORWARD链的末尾追加一条规则,使得所有匹配这条规则的数据包
但规则却在-A INPUT -j REJECT --reject-with icmp-host-prohibited之后,防火墙规则读取是由上至下,当读取到该规则后,65005这条新增规则就不会被读取,导致65005依然不能被访问,所以要么使用iptables -I插入到最上面(也可以指定序号),要么通过手动添加规则到该规则前面即可(vim/etc/sysconfig/iptables)...
icmp-admin-prohibited (*) 从以上,我们可以看出,定义了icmp主机拒绝,返回一个Destination host unreachable错误,但是由于有之前一句的存在,所以能够PING通-A RH-Firewall-1-INPUT -p icmp - -icmp-type any -j ACCEPT。 这样子,我们就能理解 -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-...
rpc error: code=2desc = oci runtime error: exec failed: container_linux.go:235: starting container process caused"exec: \"ping\": executable file not found in $PATH"command terminated with exit code126[root@centos7~]# kubectl exec -it nginx-app-56b5bb67cc-6hjgt -- curl http://10.10...
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0 0 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited Chain OUTPUT (policy ACCEPT 2131 packets, 593K bytes) pkts bytes target prot opt in out source destination The INPUT policy is set to ACCEPT, however a "REJECT all" rule was added. It the machine would ha...
linux的iptables里的--reject-with type中这些type的区别是什么? 5 --reject-withtypeThetypegivencanbeicmp-net-unreachable,icmp-host-unreach-able,icmp-port-unreachable,icmp-proto-unreachable,icmp-net-prohibited,icmp-host-prohibitedoricmp-... --reject-with type The type given can be icmp-net-...
If a REJECT policy is matched, an ICMP Administratively Prohibited response will be generated; if the frequency limit built into the REJECT policy is triggered, packets are directly discarded. If a REJECT-DROP policy is matched, packets are directly discarded. ...
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拦截网络也是类似的: iptables -A INPUT -i $IF_PUB -s 10.67.232.0/24 -jREJECT --reject-with icmp-net-prohibited这条规则拒绝到达公网接口的、源地址为10.67.232.0/24的网络。这次该传输的发送方会收到一条ICMP网络禁止的消息。