Unverified50% confidenceFactExact time

iptables的NAT功能依赖netfilter的连接跟踪模块conntrack，当第一个数据包触发规则时会在内核中建立一条五元组记录

1

Sources

50%

Confidence

Long-term

Relevance

7/13/2026

First Seen

Sources

Building Container Networking From Scratch: A Deep Dive Into Linux Bridge and veth

redditr/programming7/11/2026

Related Claims

UnverifiedPort forwarding is a static mapping rule established on a NAT router that forwards external port traffic to an intranet host by modifying the destination address of packets (DNAT).68% similar Unverified对称型NAT对每个目标地址使用不同端口映射，UDP打洞成功率极低，几乎必须依赖中继65% similar

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