diff options
| -rw-r--r-- | doc/primary-expression.txt | 11 | ||||
| -rw-r--r-- | doc/statements.txt | 5 |
2 files changed, 12 insertions, 4 deletions
diff --git a/doc/primary-expression.txt b/doc/primary-expression.txt index 48a7609d..a9c39cbb 100644 --- a/doc/primary-expression.txt +++ b/doc/primary-expression.txt @@ -123,7 +123,7 @@ integer (32 bit) pseudo-random number| integer (32 bit) |ipsec| -boolean| +true if packet was ipsec encrypted | boolean (1 bit) |iifkind| Input interface kind | @@ -162,7 +162,7 @@ Device group (32 bit number). Can be specified numerically or as symbolic name d Packet type: *host* (addressed to local host), *broadcast* (to all), *multicast* (to group), *other* (addressed to another host). |ifkind| -Interface kind (16 byte string). Does not have to exist. +Interface kind (16 byte string). See TYPES in ip-link(8) for a list. |time| Either an integer or a date in ISO format. For example: "2019-06-06 17:00". Hour and seconds are optional and can be omitted if desired. If omitted, @@ -183,11 +183,12 @@ For example, 17:00 and 17:00:00 would be equivalent. ----------------------- # qualified meta expression filter output meta oif eth0 +filter forward meta iifkind { "tun", "veth" } # unqualified meta expression filter output oif eth0 -# packet was subject to ipsec processing +# incoming packet was subject to ipsec processing raw prerouting meta ipsec exists accept ----------------------- @@ -362,13 +363,15 @@ Routing Realm (32 bit number). Can be specified numerically or as symbolic name -------------------------- # IP family independent rt expression filter output rt classid 10 -filter output rt ipsec missing # IP family dependent rt expressions ip filter output rt nexthop 192.168.0.1 ip6 filter output rt nexthop fd00::1 inet filter output rt ip nexthop 192.168.0.1 inet filter output rt ip6 nexthop fd00::1 + +# outgoing packet will be encapsulated/encrypted by ipsec +filter output rt ipsec exists -------------------------- IPSEC EXPRESSIONS diff --git a/doc/statements.txt b/doc/statements.txt index 607aee13..9155f286 100644 --- a/doc/statements.txt +++ b/doc/statements.txt @@ -218,6 +218,11 @@ has to be assigned before a conntrack lookup takes place, i.e. this has to be done in prerouting and possibly output (if locally generated packets need to be placed in a distinct zone), with a hook priority of -300. +Unlike iptables, where the helper assignment happens in the raw table, +the helper needs to be assigned after a conntrack entry has been +found, i.e. it will not work when used with hook priorities equal or before +-200. + .Conntrack statement types [options="header"] |================== |