netfilter处理数据包的链路
Netfilter 内建了 5 条链路来处理数据包,它们分别是:PREROUTING、INPUT、FORWARD、OUTPUT和POSTROUTING:
routing
decision
IN ------> PRE ---> ------> FORWARD -----> ----> POST -----> OUT
interface ROUTING \ filter / ROUTING interface
DNAT | tracking ^ SNAT
REDIRECT | | MASQUERADE
v |
INPUT OUTPUT
| filter ^ filter,DNAT
v |
\--> Local Process --/
user-space programs
如对本文有疑问, 点击进行留言回复!!
3GPP RAN6工作组正式关闭:2G/3G再无后路,清频退网进行时
网友评论