Hi how well does "Source Address Verification" work by making the following setting.
echo 1 > /proc/sys/net/ipv4/conf/*/rp_filter
What does the rp_filter do & how does it work.
Can it cause any problems with your IPCHAINS rules?
Thanks in advance
Steven
Example: you have eth0 (192.168.0.1) as the internal network interface and
eth1 (4.4.4.4) as the external iface.
rp_filter rejects packets with a source of 192.168.0/24 if they arrive on
eth1.
More generally: It rejects incoming packets if the interface address that
it arrives on does not match the respective routing table entry.
Roman.
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| Roman Drahtmüller