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| author | Stephen Hemminger <shemminger@vyatta.com> | 2008-08-18 21:32:32 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-08-18 21:32:32 -0700 |
| commit | 9f593653742d1dd816c4e94c6e5154a57ccba6d1 (patch) | |
| tree | 1e71181cc80da8dc3d6e1da202943482b9eb5500 /drivers/char/random.c | |
| parent | fab00c5d15091546be681426c60b2ed2c10513bf (diff) | |
| download | lwn-9f593653742d1dd816c4e94c6e5154a57ccba6d1.tar.gz lwn-9f593653742d1dd816c4e94c6e5154a57ccba6d1.zip | |
nf_nat: use secure_ipv4_port_ephemeral() for NAT port randomization
Use incoming network tuple as seed for NAT port randomization.
This avoids concerns of leaking net_random() bits, and also gives better
port distribution. Don't have NAT server, compile tested only.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
[ added missing EXPORT_SYMBOL_GPL ]
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/char/random.c')
| -rw-r--r-- | drivers/char/random.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index e0d0e371909c..1838aa3d24fe 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1571,6 +1571,7 @@ u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport) return half_md4_transform(hash, keyptr->secret); } +EXPORT_SYMBOL_GPL(secure_ipv4_port_ephemeral); #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr, |