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| author | Jan Engelhardt <jengelh@medozas.de> | 2011-01-26 13:50:03 +0300 |
|---|---|---|
| committer | Jan Engelhardt <jengelh@medozas.de> | 2011-01-26 15:01:39 +0300 |
| commit | ad86e1f27a9a97a9e50810b10bca678407b1d6fd (patch) | |
| tree | 1ad952ca2f4e5b4e9e4a950861199aaaf9537117 /net/netfilter/xt_iprange.c | |
| parent | 4b3fd57138c969dd940651fadf90db627254edbf (diff) | |
| download | linux-ad86e1f27a9a97a9e50810b10bca678407b1d6fd.tar.xz | |
netfilter: xt_connlimit: pick right dstaddr in NAT scenario
xt_connlimit normally records the "original" tuples in a hashlist
(such as "1.2.3.4 -> 5.6.7.8"), and looks in this list for iph->daddr
when counting.
When the user however uses DNAT in PREROUTING, looking for
iph->daddr -- which is now 192.168.9.10 -- will not match. Thus in
daddr mode, we need to record the reverse direction tuple
("192.168.9.10 -> 1.2.3.4") instead. In the reverse tuple, the dst
addr is on the src side, which is convenient, as count_them still uses
&conn->tuple.src.u3.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Diffstat (limited to 'net/netfilter/xt_iprange.c')
0 files changed, 0 insertions, 0 deletions