| Commit message (Collapse) | Author | Age | Files | Lines |
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The most common use case is ORing flags like
| syn | ack | rst
but nft seems to be fine with less intuitive stuff like
| meta mark set ip dscp << 2 << 3
so support all of them.
Signed-off-by: Phil Sutter <phil@nwl.cc>
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c3d57114f119 ("parser_bison: add shortcut syntax for matching flags
without binary operations") provides a similar syntax to iptables using
a prefix representation for flag matching.
Restore original representation using binop when listing the ruleset.
The parser still accepts the prefix notation for backward compatibility.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Ordering of 'nft -j list ruleset' output has changed, Regenerate
existing json-nft dumps. No functional change intended, merely the
position of chain objects should have moved up in the "nftables" array.
Signed-off-by: Phil Sutter <phil@nwl.cc>
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Those are expected to be stable, so add them.
Some are not 100% correct, as "typeof" is misprinted as "type" (json output
and input parser lack support for this), but for these files the "type"
is valid too.
This will allow better validation once proper "typeof" support is
added to json.c and json-parser.c.
Signed-off-by: Florian Westphal <fw@strlen.de>
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The problem with single line output as produced by 'nft -j list ruleset'
is its incompatibility to unified diff format as any change in this
single line will produce a diff which contains the old and new lines in
total. This is not just unreadable but will blow up patches which may
exceed mailinglists' mail size limits.
Convert them all at once by feeding their contents to
tests/shell/helpers/json-pretty.sh.
Signed-off-by: Phil Sutter <phil@nwl.cc>
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The "handle" in JSON output is not stable. Sanitize/normalize to zero.
Adjust the sanitize code, and regenerate the .json-nft files.
Signed-off-by: Thomas Haller <thaller@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Generate and add ".json-nft" files. These files contain the output of
`nft -j list ruleset` after the test. Also, "test-wrapper.sh" will
compare the current ruleset against the ".json-nft" files and test them
with "nft -j --check -f $FILE`. These are useful extra tests, that we
almost get for free.
Note that for some JSON dumps, `nft -f --check` fails (or prints
something). For those tests no *.json-nft file is added. The bugs needs
to be fixed first.
An example of such an issue is:
$ DUMPGEN=all ./tests/shell/run-tests.sh tests/shell/testcases/maps/nat_addr_port
which gives a file "rc-failed-chkdump" with
Command `./tests/shell/../../src/nft -j --check -f "tests/shell/testcases/maps/dumps/nat_addr_port.json-nft"` failed
>>>>
internal:0:0-0: Error: Invalid map type 'ipv4_addr . inet_service'.
internal:0:0-0: Error: Parsing command array at index 3 failed.
internal:0:0-0: Error: unqualified type integer specified in map definition. Try "typeof expression" instead of "type datatype".
<<<<
Tests like "tests/shell/testcases/nft-f/0012different_defines_0" and
"tests/shell/testcases/nft-f/0024priority_0" also don't get a .json-nft
dump yet, because their output is not stable. That needs fixing too.
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Florian Westphal <fw@strlen.de>
Signed-off-by: Thomas Haller <thaller@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
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Default burst for limit is 5 for historical reasons but it is not
displayed when listing the ruleset.
Update listing to display the default burst to disambiguate.
man nft(8) has been recently updated to document this, no action in this
front is therefore required.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Changes on kernel side no longer permit transactions that reference
a chain after it is bound.
This test case breaks when run with nftables 1.0.6 and earlier.
Keep this as a test case in tree to catch any future problems in
this area.
Link: https://lore.kernel.org/netfilter-devel/20230911213750.5B4B663206F5@dd20004.kasserver.com/
Signed-off-by: Florian Westphal <fw@strlen.de>
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These are left-over dumps ([1]), or dumps generated with the wrong name
([2]). Remove the files.
[1] commit eb14363d44ce ('tests: shell: move chain priority and policy to chain folder')
[2] commit b4775dec9f80 ('src: ingress inet support')
Signed-off-by: Thomas Haller <thaller@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
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These files are generated by running `./tests/shell/run-tests.sh -g`.
Commit the .nodump files to git.
The point is to explicitly make it known that no dump file should be
there. This prevents `./tests/shell/run-tests.sh -g` from generating
the files and proposing (over and over) to add them to git.
Signed-off-by: Thomas Haller <thaller@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
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Several tests didn't have a ".nft" dump file committed. Generate one and
commit it to git.
While not all tests have a stable ruleset to compare, many have. Commit
the .nft files for the tests where the output appears to be stable.
This was generated by running `./tests/shell/run-tests.sh -g` twice, and
commit the files that were identical both times. Note that 7 tests on my
machine fail, so those are skipped.
Also skip the files
tests/shell/testcases/maps/dumps/0004interval_map_create_once_0.nft
tests/shell/testcases/nft-f/dumps/0011manydefines_0.nft
tests/shell/testcases/sets/dumps/0011add_many_elements_0.nft
tests/shell/testcases/sets/dumps/0030add_many_elements_interval_0.nft
tests/shell/testcases/sets/dumps/0068interval_stack_overflow_0.nft
Those files are larger than 100KB, and I don't think we want to blow up
the git repository this way. Even if they are only text files and
compress well.
Signed-off-by: Thomas Haller <thaller@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
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For some reason the parser only allows raw numbers (seconds)
for ct timeouts, e.g.
ct timeout ttcp {
protocol tcp;
policy = { syn_sent : 3, ...
Also permit time_spec, e.g. "established : 5d".
Print the nicer time formats on output, but retain
raw numbers support on input for compatibility.
Signed-off-by: Florian Westphal <fw@strlen.de>
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Add a test to cover port knocking simple ruleset.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Clone the expression that defines the variable value if there are
multiple references to it in the ruleset. This saves heap memory
consumption in case the variable defines a set with a huge number of
elements.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Dump file was missing.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Print queue statement using the 'queue ... to' syntax to consolidate the
syntax around Florian's proposal introduced in 6cf0f2c17bfb ("src:
queue: allow use of arbitrary queue expressions").
Retain backward compatibility, 'queue num' syntax is still allowed.
Update and add new tests.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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WHen I simplified the parser to restrict 'queue num' I forgot that
instead of range and immediate value its also allowed to pass in
a variable expression, e.g.
define myq = 0
add rule ... 'queue num $myq bypass'
Allow those as well and add a test case for this.
Fixes: 767f0af82a389 ("parser: restrict queue num expressiveness")
Reported-by: Amish <anon.amish@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
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This patch adds a new option to define variables from the command line.
# cat test.nft
table netdev x {
chain y {
type filter hook ingress devices = $dev priority 0;
counter accept
}
}
# nft --define dev="{ eth0, eth1 }" -f test.nft
You can only combine it with -f/--filename.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Add a test to cover table T1 containing the definition of chain C1, and
table T1' (actually the same definition as T1) that contains a (jump)
reference to chain C1.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Add a test to cover multi-statement support.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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nft crashes on restore.
Signed-off-by: Florian Westphal <fw@strlen.de>
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The test cases were moved but the dumps remained in the old location.
Fixes: eb14363d44cea5 ("tests: shell: move chain priority and policy to chain folder")
Signed-off-by: Florian Westphal <fw@strlen.de>
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unshare -n tests/shell/run-tests.sh tests/shell/testcases/nft-f/0024priority_0
W: [FAILED] tests/shell/testcases/nft-f/0024priority_0: got 1
/dev/stdin:8:47-49: Error: Value 100 exceeds valid range 0-15
type filter hook postrouting priority 100
Reported-by: Andreas Schultz <andreas.schultz@travelping.com
Signed-off-by: Florian Westphal <fw@strlen.de>
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Sets that store flags might contain a mixture of values and binary
operations. Find the base value type via recursion to compare the
expressions.
Make sure concatenations are listed in a deterministic way via
concat_expr_msort_value() which builds a mpz value with the tuple.
Adjust a few tests after this update since listing differs after this
update.
Fixes: 14ee0a979b62 ("src: sort set elements in netlink_get_setelems()")
Fixes: 3926a3369bb5 ("mergesort: unbreak listing with binops")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Minimal reproducer:
```
$ cat nft.ruleset
# filters
table inet filter {
chain prerouting {
type filter hook prerouting priority -50
}
}
# dump new state
list ruleset
$ nft -c -f ./nft.ruleset
table inet filter {
chain prerouting {
Segmentation fault (core dumped)
```
The crash happens in `chain_print_declaration()`:
```
if (chain->flags & CHAIN_F_BASECHAIN) {
mpz_export_data(&policy, chain->policy->value,
BYTEORDER_HOST_ENDIAN, sizeof(int));
```
Here `chain->policy` is `NULL` (as textual rule does not mention it).
The change is not to print the policy if it's not set
(similar to `chain_evaluate()` handling).
CC: Florian Westphal <fw@strlen.de>
CC: Pablo Neira Ayuso <pablo@netfilter.org>
CC: netfilter-devel@vger.kernel.org
Bug: https://bugzilla.netfilter.org/show_bug.cgi?id=1365
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Acked-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Florian Westphal <fw@strlen.de>
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This patch allows you to use variables in chain policy definition, e.g.
define default_policy = "accept"
add table ip foo
add chain ip foo bar {type filter hook input priority filter; policy $default_policy}
Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch allows you to use variables in chain priority definitions,
e.g.
define prio = filter
define prionum = 10
define prioffset = "filter - 150"
add table ip foo
add chain ip foo bar { type filter hook input priority $prio; }
add chain ip foo ber { type filter hook input priority $prionum; }
add chain ip foo bor { type filter hook input priority $prioffset; }
Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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table ip filter {
ct timeout agressive-tcp {
...
policy = { established : 100, close_wait : 4, close : 4 }
^ ^ ^ ^ ^ ^
for consistency with map syntax.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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table ip filter {
ct timeout agressive-tcp {
protocol tcp;
^--- remove this semicolon
Not needed, remove it.
Fixes: c7c94802679c ("src: add ct timeout support")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Add at least two elements to sets.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch introduces the use of nft input files variables in 'jump' and 'goto'
statements, e.g.
define dest = ber
add table ip foo
add chain ip foo bar {type filter hook input priority 0;}
add chain ip foo ber
add rule ip foo ber counter
add rule ip foo bar jump $dest
table ip foo {
chain bar {
type filter hook input priority filter; policy accept;
jump ber
}
chain ber {
counter packets 71 bytes 6664
}
}
Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This reverts commit b7459b0c854fc7a0d6cd86151b81035a8edf8e63.
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Future change is going to auto-change them to simple compare
ops rather than lookup in set with only one element.
Signed-off-by: Florian Westphal <fw@strlen.de>
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nf_tables can handle payload exprs for sizes <= sizeof(u32) via a direct
operation from the eval loop, rather than a a call to the payload
expression. Two loads for four byte quantities are thus faster than a
single load for an 8 byte load.
ip saddr 1.2.3.4 ip daddr 2.3.4.5
is faster with this applied, even though it involves two payload and two
two compare expressions, just because all can be handled from the main
loop without any calls to expression ops.
Keep merging for linklayer and when at least one of the expressions
already exceeded the 4 byte "limit" anyway.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
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test files are located via find + a pattern search that looks for
_[0-9]. Previous change makes all test scripts return 0 when the
test case is supposed to pass, so the foo_$retval name is no longer
needed.
Update script to look for all executeables in the 'testcases' directory.
This makes it necessary to make two dump-files non-executeable.
Signed-off-by: Florian Westphal <fw@strlen.de>
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Monitor output is supposed to be single lined without tabs, but ct
object were printed with newlines and tabs hard-coded. Fixing this
wasn't too hard given that there is 'stmt_separator' to also include
semi-colons where required if newline was removed.
A more obvious mistake was position of object type in monitor output:
Like with other object types, it has to occur between command and table
spec. As a positive side-effect, this aligns ct objects better with
others (see obj_type_name_array for instance).
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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So we compare input and output are the same.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Since 6dd848339444 ("src: meta: always prefix 'meta' for almost all
tokens"), the unqualified meta are discouraged. Adjust test not to fail.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch adds the possibility to use textual names to set the chain priority
to standard values so that numeric values do not need to be learnt any more for
basic usage.
Basic arithmetic can also be done with them to ease the addition of
relatively higher/lower priority chains.
Addition and substraction is possible.
Values are also printed with their friendly name within the range of
<basicprio> +- 10.
Also numeric printing is supported in case of -nnn option
(numeric == NFT_NUMERIC_ALL)
The supported name-value pairs and where they are valid is based on how
x_tables use these values when registering their base chains. (See
iptables/nft.c in the iptables repository).
Also see the compatibility matrices extracted from the man page:
Standard priority names, family and hook compatibility matrix
┌─────────┬───────┬────────────────┬─────────────┐
│Name │ Value │ Families │ Hooks │
├─────────┼───────┼────────────────┼─────────────┤
│ │ │ │ │
│raw │ -300 │ ip, ip6, inet │ all │
├─────────┼───────┼────────────────┼─────────────┤
│ │ │ │ │
│mangle │ -150 │ ip, ip6, inet │ all │
├─────────┼───────┼────────────────┼─────────────┤
│ │ │ │ │
│dstnat │ -100 │ ip, ip6, inet │ prerouting │
├─────────┼───────┼────────────────┼─────────────┤
│ │ │ │ │
│filter │ 0 │ ip, ip6, inet, │ all │
│ │ │ arp, netdev │ │
├─────────┼───────┼────────────────┼─────────────┤
│ │ │ │ │
│security │ 50 │ ip, ip6, inet │ all │
├─────────┼───────┼────────────────┼─────────────┤
│ │ │ │ │
│srcnat │ 100 │ ip, ip6, inet │ postrouting │
└─────────┴───────┴────────────────┴─────────────┘
Standard priority names and hook compatibility for the bridge family
┌───────┬───────┬─────────────┐
│ │ │ │
│Name │ Value │ Hooks │
├───────┼───────┼─────────────┤
│ │ │ │
│dstnat │ -300 │ prerouting │
├───────┼───────┼─────────────┤
│ │ │ │
│filter │ -200 │ all │
├───────┼───────┼─────────────┤
│ │ │ │
│out │ 100 │ output │
├───────┼───────┼─────────────┤
│ │ │ │
│srcnat │ 300 │ postrouting │
└───────┴───────┴─────────────┘
This can be also applied for flowtables wher it works as a netdev family
chain.
Example:
nft> add table ip x
nft> add chain ip x y { type filter hook prerouting priority raw; }
nft> add chain ip x z { type filter hook prerouting priority mangle + 1; }
nft> add chain ip x w { type filter hook prerouting priority dstnat - 5; }
nft> add chain ip x r { type filter hook prerouting priority filter + 10; }
nft> add chain ip x t { type filter hook prerouting priority security; }
nft> add chain ip x q { type filter hook postrouting priority srcnat + 11; }
nft> add chain ip x h { type filter hook prerouting priority 15; }
nft>
nft> add flowtable ip x y { hook ingress priority filter + 5 ; devices = {enp0s31f6}; }
nft>
nft> add table arp x
nft> add chain arp x y { type filter hook input priority filter + 5; }
nft>
nft> add table bridge x
nft> add chain bridge x y { type filter hook input priority filter + 9; }
nft> add chain bridge x z { type filter hook prerouting priority dstnat; }
nft> add chain bridge x q { type filter hook postrouting priority srcnat; }
nft> add chain bridge x k { type filter hook output priority out; }
nft>
nft> list ruleset
table ip x {
flowtable y {
hook ingress priority filter + 5
devices = { enp0s31f6 }
}
chain y {
type filter hook prerouting priority raw; policy accept;
}
chain z {
type filter hook prerouting priority mangle + 1; policy accept;
}
chain w {
type filter hook prerouting priority dstnat - 5; policy accept;
}
chain r {
type filter hook prerouting priority filter + 10; policy accept;
}
chain t {
type filter hook prerouting priority security; policy accept;
}
chain q {
type filter hook postrouting priority 111; policy accept;
}
chain h {
type filter hook prerouting priority 15; policy accept;
}
}
table arp x {
chain y {
type filter hook input priority filter + 5; policy accept;
}
}
table bridge x {
chain y {
type filter hook input priority filter + 9; policy accept;
}
chain z {
type filter hook prerouting priority dstnat; policy accept;
}
chain q {
type filter hook postrouting priority srcnat; policy accept;
}
chain k {
type filter hook output priority out; policy accept;
}
}
nft> # Everything should fail after this
nft> add chain ip x h { type filter hook prerouting priority first; }
Error: 'first' is invalid priority in this context.
add chain ip x h { type filter hook prerouting priority first; }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
nft> add chain ip x q { type filter hook prerouting priority srcnat + 11; }
Error: 'srcnat' is invalid priority in this context.
add chain ip x q { type filter hook prerouting priority srcnat + 11; }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
nft> add chain arp x y { type filter hook input priority raw; }
Error: 'raw' is invalid priority in this context.
add chain arp x y { type filter hook input priority raw; }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
nft> add flowtable ip x y { hook ingress priority magle; devices = {enp0s31f6}; }
Error: 'magle' is invalid priority.
add flowtable ip x y { hook ingress priority magle; devices = {enp0s31f6}; }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
nft> add chain bridge x r { type filter hook postrouting priority dstnat; }
Error: 'dstnat' is invalid priority in this context.
add chain bridge x r { type filter hook postrouting priority dstnat; }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
nft> add chain bridge x t { type filter hook prerouting priority srcnat; }
Error: 'srcnat' is invalid priority in this context.
add chain bridge x t { type filter hook prerouting priority srcnat; }
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Signed-off-by: Máté Eckl <ecklm94@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Default not to print the service name as we discussed during the NFWS.
# nft list ruleset
table ip x {
chain y {
tcp dport 22
ip saddr 1.1.1.1
}
}
# nft -l list ruleset
table ip x {
chain y {
tcp dport ssh
ip saddr 1.1.1.1
}
}
# nft -ll list ruleset
table ip x {
chain y {
tcp dport 22
ip saddr 1dot1dot1dot1.cloudflare-dns.com
}
}
Then, -ll displays FQDN. just like the (now deprecated) --ip2name (-N)
option.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Complete the automated shell tests with the verification of
the test file dump, only for positive tests and if the test
execution was successful.
It's able to generate the dump file with the -g option.
Example:
# ./run-tests.sh -g testcases/chains/0001jumps_0
The dump files are generated in the same path in the folder named
dumps/ with .nft extension.
It has been avoided the dump verification code in every test
file.
Signed-off-by: Laura Garcia Liebana <nevola@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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