Set net.ipv4.conf.*.arp_filter=1

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raja-grewal 2024-12-19 10:31:43 +00:00 committed by GitHub
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2 changed files with 2 additions and 3 deletions

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@ -105,8 +105,7 @@ Networking:
- Optional - Deny sending and receiving shared media redirects to reduce
the risk of IP spoofing attacks.
- Optional - Enable ARP filtering to mitigate some ARP spoofing and ARP
cache poisoning attacks.
- Enable ARP filtering to mitigate some ARP spoofing and ARP cache poisoning attacks.
- Optional - Respond to ARP requests only if the target IP address is
on-link, preventing some IP spoofing attacks.

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@ -460,7 +460,7 @@ net.ipv6.conf.*.accept_redirects=0
##
## https://cyber.gouv.fr/sites/default/files/document/linux_configuration-en-v2.pdf
##
#net.ipv4.conf.*.arp_filter=1
net.ipv4.conf.*.arp_filter=1
## Respond to ARP (Address Resolution Protocol) requests only if the target IP address is on-link.
## Reduces IP spoofing attacks by limiting the scope of allowable ARP responses.