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Filename Latest commit message Latest commit date
Fernando Fernandez Mancera e971ceb803 netfilter: synproxy: fix rst sequence number mismatch 
14:51:00.024418 IP 192.168.122.1.41462 > netfilter.90: Flags [S], seq
4023580551,
14:51:00.024454 IP netfilter.90 > 192.168.122.1.41462: Flags [S.], seq
727560212, ack 4023580552,
14:51:00.024524 IP 192.168.122.1.41462 > netfilter.90: Flags [.], ack 1,

Note: here, synproxy will send a SYN to the real server, as the 3whs was
completed sucessfully. Instead of a syn/ack that we can intercept, we instead
received a reset packet from the real backend, that we forward to the original
client. However, we don't use the correct sequence number, so the reset is not
effective in closing the connection coming from the client.

14:51:00.024550 IP netfilter.90 > 192.168.122.1.41462: Flags [R.], seq
3567407084,
14:51:00.231196 IP 192.168.122.1.41462 > netfilter.90: Flags [.], ack 1,
14:51:00.647911 IP 192.168.122.1.41462 > netfilter.90: Flags [.], ack 1,
14:51:01.474395 IP 192.168.122.1.41462 > netfilter.90: Flags [.], ack 1,

Fixes: 48b1de4c11 ("netfilter: add SYNPROXY core/target")
Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2019-07-18 20:55:53 +02:00
arch powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
block
certs
crypto USB / PHY patches for 5.3-rc1 2019-07-11 15:40:06 -07:00
Documentation bonding: add documentation for peer_notif_delay 2019-07-13 19:29:21 -07:00
drivers sky2: Disable MSI on P5W DH Deluxe 2019-07-14 13:45:54 -07:00
fs for-5.3/io_uring-20190711 2019-07-13 10:36:53 -07:00
include netfilter: synproxy: fix erroneous tcp mss option 2019-07-16 13:17:01 +02:00
init Kbuild updates for v5.3 2019-07-12 16:03:16 -07:00
ipc
kernel Kbuild updates for v5.3 2019-07-12 16:03:16 -07:00
lib for-5.3/io_uring-20190711 2019-07-13 10:36:53 -07:00
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mm Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
net netfilter: synproxy: fix rst sequence number mismatch 2019-07-18 20:55:53 +02:00
samples Kbuild updates for v5.3 2019-07-12 16:03:16 -07:00
scripts powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
security Merge branch 'akpm' (patches from Andrew) 2019-07-12 11:40:28 -07:00
sound Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
tools powerpc updates for 5.3 2019-07-13 16:08:36 -07:00
usr
virt ARM: 2019-07-12 15:35:14 -07:00
.clang-format
.cocciconfig
.get_maintainer.ignore
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COPYING
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MAINTAINERS This pull-request contains the following changes for MTD: 2019-07-13 15:42:44 -07:00
Makefile Kbuild updates for v5.3 2019-07-12 16:03:16 -07:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.