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| author | Kevin Cernekee <cernekee@chromium.org> | 2017-12-06 12:12:27 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-11 11:58:18 -0500 |
| commit | 93c647643b48f0131f02e45da3bd367d80443291 (patch) | |
| tree | 652bb87e4f4be4132684bbf24c6f1437a53119b3 /Kbuild | |
| parent | 2aab6b40b03154a263463a5d992ddd7d122a016a (diff) | |
| download | linux-93c647643b48f0131f02e45da3bd367d80443291.tar.bz2 | |
netlink: Add netns check on taps
Currently, a nlmon link inside a child namespace can observe systemwide
netlink activity. Filter the traffic so that nlmon can only sniff
netlink messages from its own netns.
Test case:
vpnns -- bash -c "ip link add nlmon0 type nlmon; \
ip link set nlmon0 up; \
tcpdump -i nlmon0 -q -w /tmp/nlmon.pcap -U" &
sudo ip xfrm state add src 10.1.1.1 dst 10.1.1.2 proto esp \
spi 0x1 mode transport \
auth sha1 0x6162633132330000000000000000000000000000 \
enc aes 0x00000000000000000000000000000000
grep --binary abc123 /tmp/nlmon.pcap
Signed-off-by: Kevin Cernekee <cernekee@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Kbuild')
0 files changed, 0 insertions, 0 deletions