diff options
| author | Fernando Fernandez Mancera <ffmancera@riseup.net> | 2019-06-22 19:12:08 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-07-17 10:22:39 +0200 |
| commit | 1188a69604c3df2a63daca9e735fdb535e8f6b63 (patch) | |
| tree | 21887d78f5b30023546f40da96aaa4cf256a59e5 /include/statement.h | |
| parent | 82cc676289803cfd1e69dfeaa4658d57a1547a86 (diff) | |
src: introduce SYNPROXY matching
Add support for "synproxy" statement. For example (for TCP port 8888):
table ip x {
chain y {
type filter hook prerouting priority raw; policy accept;
tcp dport 8888 tcp flags syn notrack
}
chain z {
type filter hook input priority filter; policy accept;
tcp dport 8888 ct state invalid,untracked synproxy mss 1460 wscale 7 timestamp sack-perm
ct state invalid drop
}
}
Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/statement.h')
| -rw-r--r-- | include/statement.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/statement.h b/include/statement.h index 6fb5cf15..585908de 100644 --- a/include/statement.h +++ b/include/statement.h @@ -204,6 +204,14 @@ struct map_stmt { extern struct stmt *map_stmt_alloc(const struct location *loc); +struct synproxy_stmt { + uint16_t mss; + uint8_t wscale; + uint32_t flags; +}; + +extern struct stmt *synproxy_stmt_alloc(const struct location *loc); + struct meter_stmt { struct expr *set; struct expr *key; @@ -271,6 +279,7 @@ extern struct stmt *xt_stmt_alloc(const struct location *loc); * @STMT_FLOW_OFFLOAD: flow offload statement * @STMT_CONNLIMIT: connection limit statement * @STMT_MAP: map statement + * @STMT_SYNPROXY: synproxy statement */ enum stmt_types { STMT_INVALID, @@ -298,6 +307,7 @@ enum stmt_types { STMT_FLOW_OFFLOAD, STMT_CONNLIMIT, STMT_MAP, + STMT_SYNPROXY, }; /** @@ -362,6 +372,7 @@ struct stmt { struct objref_stmt objref; struct flow_stmt flow; struct map_stmt map; + struct synproxy_stmt synproxy; }; }; |