使用iptables的NAT的逐步配置 - Howtoing
-t nat tells iptables that we want to work on the Network Address Translation (NAT) table. We add our rule to the PREROUTING chain as we want to re-route packets and select them based on protocol ( -p tcp ), destination ( -d 32.0.0.1 ) and port ( --dport 8080 ). As every other iptables command, it applies to the specified table (filter is the default), so NAT rules get listed by iptables -t nat -n -L Please note that it is often used with the -n option, in order to avoid long reverse DNS lookups. root@athena:/# iptables -t nat -A brwan_masq -s 192.168.2.0/24 -j SNATP2P iptables v1.4.21: Couldn't load target `SNATP2P':No such file or directory Try `iptables -h' or 'iptables --help' for more information. Except it's not. SNATP2P is not a configurable target. Doh. OK, fine. As every other iptables command, it applies to the specified table (filter is the default), so NAT rules get listed by iptables -t nat -n -L Please note that it is often used with the -n option, in order to avoid long reverse DNS lookups. Destination NAT with netfilter is commonly used to publish a service from an internal RFC 1918 network to a publicly accessible IP. To enable DNAT, at least one iptables command is required. Like every other iptables command, it applies to the specified table (filter is the default), so NAT rules get listed by iptables -t nat -n -L Please note that it is often used with the -n option, in order to avoid long reverse DNS lookups. iptables -L -t nat You can also list the other tables like: mangle, raw and security. You should consider reading a bit more about tables. You can do it in the Tables section in the man page of iptables. Delete all rules. iptables -F Delete specific table liket nat. iptables -t nat -F Specify chain policies
2016-5-12 · iptables -t nat -A POSTROUTING -o br0 -j MASQUERADE 注意该命令中的网卡时br0，而不是eth0 。 此时，我们再切换VM中测试的网络通信情况。如下： 通过上图我们可以很明显的看到，目前VM可以与服务器以及外网正常通信。 以上就是KVM为VM配置NAT
2007-10-15 · 使用iptables实现双向NAT，其实就像使用防火墙或路由器将外网的服务器IP映射到内网中。 访问过程： 首先从客户发起一个向内网IP的访问，数据包到达防火墙或路由器后将目的IP转换为外网服务器IP，由外网网口发送给服
iptables详解及一些常用规则 - 简书
2019-1-10 · iptables -I INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT 17、端口转发（本机8080转发到远程192.168.1.22:80） iptables -t nat -A PREROUTING -p tcp -i eth0 --dport 8080 -j DNAT --to 192.168.1.22:80 iptables -t nat -A POSTROUTING -j IPtables中SNAT和MASQUERADE的区别-操作系统 … 2008-3-17 · iptables -t nat -A POSTROUTING -s 10.8.0.0/255.255.255.0 -o eth0 -j MASQUERADE 如此配置的话，不用指定SNAT的目标ip 了 不管现在eth0的出口获得了怎样的动态ip，MASQUERADE会自动读取eth0现在的ip地址然后做SNAT出去 这样就实现了很好 iptables 添加，删除，查看，修改«海底苍鹰(tank) …