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authorFlorian Westphal <fw@strlen.de>2018-12-18 00:05:29 +0100
committerPablo Neira Ayuso <pablo@netfilter.org>2018-12-21 00:48:46 +0100
commit294304e4c522d797b7ea8200ab74354843fa68e9 (patch)
tree14c5ed235dc6980f3b892f6717f0243564bf4b36
parentd535c8a69c1924e70186d80be0a9cecaf475f166 (diff)
netfilter: conntrack: udp: set stream timeout to 2 minutes
We have no explicit signal when a UDP stream has terminated, peers just stop sending. For suspected stream connections a timeout of two minutes is sane to keep NAT mapping alive a while longer. It matches tcp conntracks 'timewait' default timeout value. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
-rw-r--r--Documentation/networking/nf_conntrack-sysctl.txt2
-rw-r--r--net/netfilter/nf_conntrack_proto_udp.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/networking/nf_conntrack-sysctl.txt b/Documentation/networking/nf_conntrack-sysctl.txt
index 1669dc2419fd..e69b2e6a4a29 100644
--- a/Documentation/networking/nf_conntrack-sysctl.txt
+++ b/Documentation/networking/nf_conntrack-sysctl.txt
@@ -157,7 +157,7 @@ nf_conntrack_udp_timeout - INTEGER (seconds)
default 30
nf_conntrack_udp_timeout_stream - INTEGER (seconds)
- default 180
+ default 120
This extended timeout will be used in case there is an UDP stream
detected.
diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index 9f2e05adba69..b4f5d5e82031 100644
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -29,7 +29,7 @@
static const unsigned int udp_timeouts[UDP_CT_MAX] = {
[UDP_CT_UNREPLIED] = 30*HZ,
- [UDP_CT_REPLIED] = 180*HZ,
+ [UDP_CT_REPLIED] = 120*HZ,
};
static unsigned int *udp_get_timeouts(struct net *net)