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| author | Jesper Dangaard Brouer <hawk@comx.dk> | 2009-02-22 11:06:20 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-02-23 06:54:47 +0300 |
| commit | b2cc46a8ee905d1d642e01761939879c495e3e3a (patch) | |
| tree | 53de67ae5f324440b9a2c5ecc1c9722a5ae4c86a | |
| parent | 0117cfabe3ba9b430c6ff6eecd4fdc569977f24f (diff) | |
| download | linux-b2cc46a8ee905d1d642e01761939879c495e3e3a.tar.xz | |
ipv4: Fix rp_filter description in net/ipv4/Kconfig.
The reverse path filter (rp_filter) will NOT get enabled
when enabling forwarding. Read the code and tested in
in practice.
Most distributions do enable it in startup scripts.
Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/Kconfig | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig index 691268f3a359..10c944d42488 100644 --- a/net/ipv4/Kconfig +++ b/net/ipv4/Kconfig @@ -35,7 +35,7 @@ config IP_ADVANCED_ROUTER at boot time after the /proc file system has been mounted. - If you turn on IP forwarding, you will also get the rp_filter, which + If you turn on IP forwarding, you should consider the rp_filter, which automatically rejects incoming packets if the routing table entry for their source address doesn't match the network interface they're arriving on. This has security advantages because it prevents the @@ -46,9 +46,11 @@ config IP_ADVANCED_ROUTER rp_filter on use: echo 1 > /proc/sys/net/ipv4/conf/<device>/rp_filter - or + and echo 1 > /proc/sys/net/ipv4/conf/all/rp_filter + Note that some distributions enable it in startup scripts. + If unsure, say N here. choice |