iptables -t raw -I PREROUTING_Spoofing -i br-lan -j ACCEPT
时间: 2024-10-20 16:02:21 浏览: 34
The iptables
command allows you to manage network packet filtering and routing using its various tables and chains. In this case, you're referring to the -t raw
option which deals with unprocessed packets before they're passed through the kernel's networking stack.
To insert a rule into the PREROUTING
chain of the raw
table, specifically targeting spoofed packets coming from interface br-lan
, and allowing them, you would use the following syntax:
iptables -t raw -I PREROUTING_Spoofing -i br-lan -j ACCEPT
Here's what each part means:
-t raw
: Selects theraw
table.-I PREROUTING_Spoofing
: Inserts the rule at a specified position (I
stands for "insert") within thePREROUTING
chain, assuming there's already aPREROUTING_Spoofing
chain defined or create one if it doesn't exist. This chain is typically used to handle incoming packets before any processing.-i br-lan
: Matches the packet ingress interface asbr-lan
.-j ACCEPT
: Applies theACCEPT
action, meaning allow these packets to pass through without further inspection.
Remember to run this command with appropriate privileges, such as root access, since modifying the raw
table usually requires elevated permissions.