| Commit message (Collapse) | Author | Age | Files | Lines |
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Otherwise ip6tables-save piped to ip6tables-restore can cause a parse
error when the expression list is empty.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Instead of the dimension of the set, the max dimension was used at
listing/saving the src,dst parameters, which produced broken output.
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Add support for revision 3 of the conntrack match, which allows to
specify port ranges for origsrc/origdst/replsrc/repldst.
Signed-off-by: Patrick McHardy <kaber@trash.net>
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--queue-bypass: if no userpace program is listening on the queue, then
allow packets to continue through the ruleset instead of dropping them.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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libxt module for the AUDIT target.
-j AUDIT --type (accept|reject|drop)
Signed-off-by: Thomas Graf <tgraf@redhat.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Direct specifications like "upto" are easier to grasp than "not
above". This patch adds such an upto variant similar to what
libxt_hashlimit already has.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Frank Lichtenheld points out that -m time --datestart ...
sometimes messes up --datestart:
$ iptables -A INPUT -m time --datestart 2010-11-24T16:50:00 -j ACCEPT
$ iptables-save | grep 11
-A INPUT -m time --datestart 2010-11-24T16:50:00 -j ACCEPT
$ iptables-save | iptables-restore
$ iptables-save | grep 11
-A INPUT -m time --datestart 2010-11-24T15:50:00 -j ACCEPT
--datestart moved by one hour.
As the --timestart option does not care about DST, always set
dst=0 when parsing --starttime input.
Reported-by: Frank Lichtenheld <flichtenheld@astaro.com>
Signed-off-by: Florian Westphal <fwestphal@astaro.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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When using --to-ports with a port name instead of a numerical
specification, a segfault occurs.
References: http://bugzilla.netfilter.org/show_bug.cgi?id=691
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Match and target parse functions now only get option characters they
have defined themselves.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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"u_int" was a non-standardized extension predating C99 on some platforms.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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make only evaluates $? of an entire shell invocation. As such, if any
command in the chain can fail, $? needs to be thrown, and early so.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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References: http://bugzilla.netfilter.org/show_bug.cgi?id=683
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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In the fi_FI locale, [a-z] would not include 'w', for example. Rectify
this by using [[:alnum:]] (to counter against different ordering) and
forcing the POSIX locale (so that the alphabet has at least the 26
base characters).
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Also includes the type change to __u{8,16,32} kernel types already.
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$ iptables-save | iptables-restore
iptables-restore v1.4.6: conntrack: Bad value for "--ctdir" option: "ORIGINAL-j"
Signed-off-by: Florian Westphal <fwestphal@astaro.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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The @bits parameter was wrongly labeled and should have been @max
already. This makes the - overflowing - 1<<bits redundant of course.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Gabor Z. Papp noted this link-time error when configuring with
--enable-static:
extensions/libext4.a(initext4.o): In function "init_extensions":
extensions/initext4.c:144: undefined reference to "libxt_IDLETIMER_init"
extensions/initext4.c:145: undefined reference to "libxt_TEE_init"
Indeed, since the two modules did not use our special macro "_init"
(which expands to libxt_foo_init), initext4.c could not find them by
that name. Correct this.
References: http://marc.info/?l=netfilter&m=128085480927924&w=2
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Don't ignore the quota value on deletion, then we can remove a special
rule everytime.
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Try to inhibit copypasting old stuff.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Kernel 2.6.36 supports xt_cpu match
In some situations a CPU match permits a better spreading of
connections, or select targets only for a given cpu.
With Remote Packet Steering or multiqueue NIC and appropriate IRQ
affinities, we can distribute trafic on available cpus, per session.
(all RX packets for a given flow are handled by a given cpu)
Some legacy applications being not SMP friendly, one way to scale a
server is to run multiple copies of them.
Instead of randomly choosing an instance, we can use the cpu number as a
key so that softirq handler for a whole instance is running on a single
cpu, maximizing cache effects in TCP/UDP stacks.
Using NAT for example, a four ways machine might run four copies of
server application, using a separate listening port for each instance,
but still presenting an unique external port :
iptables -t nat -A PREROUTING -p tcp --dport 80 -m cpu --cpu 0 \
-j REDIRECT --to-port 8080
iptables -t nat -A PREROUTING -p tcp --dport 80 -m cpu --cpu 1 \
-j REDIRECT --to-port 8081
iptables -t nat -A PREROUTING -p tcp --dport 80 -m cpu --cpu 2 \
-j REDIRECT --to-port 8082
iptables -t nat -A PREROUTING -p tcp --dport 80 -m cpu --cpu 3 \
-j REDIRECT --to-port 8083
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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The user-space library for the netfilter matcher xt_ipvs.
[ trivial up-port by Simon Horman <horms@verge.net.au> ]
Signed-off-by: Hannes Eder <heder@google.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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The output generated by the libxt_rateest extension for bps matches
was wrong and could not be restored properly. This patch fixes this
problem by using the correct options in the right order when saving
the table.
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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The xt_quota_info flags should be set properly for the --quota option negation
support.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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There were a few typos in some options in the rateest match section of the
man page: --rateest1-bps should be --rateest-bps1 and so on.
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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libipt_set renamed to libxt_set and the support for the forthcoming
ipset release added. I have tested backward (IPv4) and forward
compatibility (IPv4/IPv6):
ipset -N test iphash
ipset -A test test-address
iptables -N test-set
iptables -A test-set -j LOG --log-prefix "match "
iptables -A test-set -j DROP
iptables -A OUTPUT -m set --match-set test dst -j test-set
ping test-address
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References: http://bugzilla.netfilter.org/show_bug.cgi?id=659
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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iptables -L lists the burst value, and so should iptables -S. I was
certainly surprised to see it gone even when explicitly specifying
--hashlimit-burst 5 on the command line.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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This adds a `CHECKSUM' target, which can be used in the iptables mangle
table.
You can use this target to compute and fill in the checksum in
a packet that lacks a checksum. This is particularly useful,
if you need to work around old applications such as dhcp clients,
that do not work well with checksum offloads, but don't want to disable
checksum offload in your device.
The problem happens in the field with virtualized applications.
For reference, see Red Hat bz 605555, as well as
http://www.spinics.net/lists/kvm/msg37660.html
Typical expected use (helps old dhclient binary running in a VM):
iptables -A POSTROUTING -t mangle -p udp --dport bootpc \
-j CHECKSUM --checksum-fill
Includes fixes by Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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This patch changes custom error messages for illegal options into the
default iptables messages, by using xtables_param_act().
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Signed-off-by: Patrick McHardy <kaber@trash.net>
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Add the extension plugin for the IDLETIMER x_tables target.
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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