ARP filter
Posted: 2017/11/20 05:38:35
When I search for ARP Flux on the Internet, I am informed that Linux considers its IP addresses to be host addresses and not specifically tied to an interface card. Consequently all interfaces respond to an ARP request for any of a hosts IP addresses unless arp filtering is enabled.
I have a device on my network that appears to have arp filtering disabled and is causing problems for my network mapping software.
However, my Centos 7 box does not exhibit this behavior and I don't understand why.
1) /proc/sys/net/ipv4/conf/*/arp_filter all contain 0
2) arptables is not a recognized command.
Does anyone know how arp filtering is enabled?
I don't want to disable arp filtering on my CentOS box, I just want to understand why it behaves differently than the problematic device.
The version is 3.10.0-327.36.3.el7.x86_64
I have a device on my network that appears to have arp filtering disabled and is causing problems for my network mapping software.
However, my Centos 7 box does not exhibit this behavior and I don't understand why.
1) /proc/sys/net/ipv4/conf/*/arp_filter all contain 0
2) arptables is not a recognized command.
Does anyone know how arp filtering is enabled?
I don't want to disable arp filtering on my CentOS box, I just want to understand why it behaves differently than the problematic device.
The version is 3.10.0-327.36.3.el7.x86_64