Hi!
The Netfilter project proudly presents:
nftables 0.9.7
This release contains fixes and new features available up to the Linux
kernel 5.10-rc1 release.
* Support for implicit chain, e.g.
table inet x {
chain y {
type filter hook input priority 0;
tcp dport 22 jump {
ip saddr { 127.0.0.0/8, 172.23.0.0/16, 192.168.13.0/24 } accept
ip6 saddr ::1/128 accept;
}
}
}
This allows you to group rules without the need for an explicit
chain definition.
* Support for ingress inet chains:
table inet filter {
chain ingress {
type filter hook ingress device "veth0" priority filter; policy accept;
}
chain input {
type filter hook input priority filter; policy accept;
}
chain forward {
type filter hook forward priority filter; policy accept;
}
}
The inet family supports the ingress hook since Linux kernel 5.10-rc1,
to filter IPv4 and IPv6 packet at the same location as the netdev ingress
hook. This inet hook allows you to share sets and maps between the usual
prerouting, input, forward, output, postrouting and this ingress hook.
* Support for reject from prerouting chain:
table inet x {
chain y {
type filter hook prerouting priority 0; policy accept;
tcp dport 22 reject with tcp reset
}
}
* Support for --terse option in json
# nft --terse -j list ruleset
* Display set counters in json
# nft -j list set
* Support for the reset command with json, ie.
# nft -j reset counters
* Match on wildcard socket listeners, eg.
table inet x {
chain y {
type filter hook prerouting priority -150; policy accept;
socket transparent 1 socket wildcard 0 mark set 0x00000001
}
}
* Get elements from maps:
# nft get element inet filter test "{ 18.51.100.17 . ad:c1:ac:c0:ce:c0 . 3761 : 0x42 }"
table inet filter {
map test {
type ipv4_addr . ether_addr . inet_service : mark
flags interval,timeout
elements = { 18.51.100.17 . ad:c1:ac:c0:ce:c0 . 3761 : 0x00000042 }
}
}
* Allow to specify comments in sets, eg.
table ip x {
set s {
type ipv4_addr;
comment "list of unwanted traffic by IP address"
elements = { 1.1.1.1, 1.2.3.4 }
}
}
You can also specify comments in tables and stateful objects (such
as quota, limit and counters).
* Support for defining empty sets in variables:
define BASE_ALLOWED_INCOMING_TCP_PORTS = {22, 80, 443}
define EXTRA_ALLOWED_INCOMING_TCP_PORTS = {}
table inet x {
chain y {
type filter hook input priority 0; policy drop;
ct state new tcp dport { $BASE_ALLOWED_INCOMING_TCP_PORTS, $EXTRA_ALLOWED_INCOMING_TCP_PORTS } counter accept
}
}
* Allow to use variables in the log prefix string.
define foo= "state"
define bar = "match"
table x {
chain y {
ct state invalid log prefix "invalid $foo $bar:"
}
}
* Allow to use variables in chain and flowtable definitions, e.g.
define if_main = lo
table netdev x {
chain y {
type filter hook ingress device $if_main priority -500; policy accept;
}
}
* Allow to define negative values in variables:
define post = -10
define for = "filter - 100"
table inet global {
chain forward {
type filter hook prerouting priority $for
policy accept
}
chain postrouting {
type filter hook postrouting priority $post
policy accept
}
}
* Improved error reporting on statements:
# nft add rule x y jump test
Error: Could not process rule: No such file or directory
add rule x y jump test
^^^^
This error is displayed in case that the 'test' chain does not exist.
* Support for SCTP stateless NAT.
You can download this new release from:
https://www.netfilter.org/projects/nftables/downloads.html#nftables-0.9.7
To build the code, libnftnl >= 1.1.8 and libmnl >= 1.0.4 are required:
* https://netfilter.org/projects/libnftnl/index.html
* https://netfilter.org/projects/libmnl/index.html
Visit our wikipage for user documentation at:
* https://wiki.nftables.org
For the manpage reference, check man(8) nft.
In case of bugs and feature request, file them via:
* https://bugzilla.netfilter.org
Have fun.
Arturo Borrero Gonzalez (1):
nft: rearrange help output to group related options together
Balazs Scheidler (5):
socket: add support for "wildcard" key
src/scanner.l: fix whitespace issue for the TRANSPARENT keyword
doc: added documentation on "socket wildcard"
tests: added "socket wildcard" testcases
tests: allow tests/monitor to use a custom nft executable
Devin Bayer (1):
nft: migrate man page examples with `meter` directive to sets
Florian Westphal (9):
doc: revisit meta/rt primary expressions and ct statement
monitor: print "dormant" flag in monitor mode
tests: extend existing dormat test case to catch a kernel bug
evaluate: permit get element on maps
netlink: fix concat range expansion in map case
tests: extend 0043concatenated_ranges_0 to cover maps too
nftables: dump raw element info from libnftnl when netlink debugging is on
proto: add sctp crc32 checksum fixup
segtree: copy expr data to closing element
Gopal Yadav (2):
json: Combining --terse with --json has no effect
Solves Bug 1462 - `nft -j list set` does not show counters
Jeremy Sowden (3):
tests: py: add missing JSON output for ct test.
tests: py: correct order of set elements in test JSON output.
tests: py: add missing test JSON output for TCP flag tests.
Jindrich Makovicka (1):
libnftables: avoid repeated command list traversal on errors
Jose M. Guisado Gomez (6):
src: fix obj list output when reset command
src: add comment support for set declarations
src: add comment support when adding tables
src: add comment support for objects
parser_bison: fail when specifying multiple comments
src: add comment support for chains
Pablo Neira Ayuso (45):
src: Allow for empty set variable definition
segtree: zap element statement when decomposing interval
src: use expression to store the log prefix
src: allow for variables in the log prefix string
datatype: convert chain name from gmp value to string
src: support for implicit chain bindings
parser_bison: memleak in log prefix string
evaluate: UAF in stmt_evaluate_log_prefix()
tests: shell: chmod 755 testcases/chains/0030create_0
src: allow to use variables in flowtable and chain devices
evaluate: use evaluate_expr_variable() for chain policy evaluation
tests: shell: remove check for reject from prerouting
rule: flush set cache before flush command
rule: missing map command expansion
evaluate: replace variable expression by the value expression
src: allow for negative value in variable definitions
evaluate: bail out with concatenations and singleton values
evaluate: flush set cache from the evaluation phase
src: remove cache lookups after the evaluation phase
evaluate: remove table from cache on delete table
parser_bison: memleak symbol redefinition
evaluate: memleak in invalid default policy definition
evaluate: UAF in hook priority expression
netlink_delinearize: transform binary operation to prefix only with values
evaluate: disregard ct address matching without family
segtree: memleaks in interval_map_decompose()
src: cache gets out of sync in interactive mode
src: add comment support for map too
mergesort: unbreak listing with binops
src: add expression handler hashtable
src: add chain hashtable cache
mergesort: find base value expression type via recursion
mnl: larger receive socket buffer for netlink errors
tests: py: flush log file output before running each command
evaluate: remove one indent level in __expr_evaluate_payload()
src: context tracking for multiple transport protocols
src: ingress inet support
doc: nft.8: describe inet ingress hook
rule: larger number of error locations
src: constify location parameter in cmd_add_loc()
src: improve rule error reporting
segtree: UAF in interval_map_decompose()
monitor: do not print generation ID with --echo
Revert "monitor: do not print generation ID with --echo"
build: Bump version to v0.9.7
Phil Sutter (4):
doc: Document notrack statement
json: Expect refcount increment by json_array_extend()
evaluate: Reject quoted strings containing only wildcard
json: Fix memleak in set_dtype_json()
Stefano Brivio (5):
tests: Run in separate network namespace, don't break connectivity
tests: shell: Allow wrappers to be passed as nft command
tests: 0043concatenated_ranges_0: Fix checks for add/delete failures
tests: 0044interval_overlap_0: Repeat insertion tests with timeout
tests: sets: Check rbtree overlap detection after tree rotations
