Martin Willi [Wed, 18 Sep 2013 12:11:40 +0000 (14:11 +0200)]
ikev1: Accept reauthentication attempts with a keep unique policy from same host
When we have a "keep" unique policy in place, we have to be less strict in
rejecting Main/Aggressive Modes to enforce it. If the host/port equals to
that of an existing ISAKMP SA, we assume it is a reauthentication attempt
and accept the new SA (to replace the old).
Martin Willi [Wed, 18 Sep 2013 11:56:45 +0000 (13:56 +0200)]
ikev1: Delay a potential delete for a duplicate IKE_SA having a replace policy
Sending a DELETE for the replaced SA immediately is problematic during
reauthentication, as the peer might have associated the Quick Modes to the
old SA, and also delete them.
With this change the delete for the old ISAKMP SA is usually omitted, as it
is gets implicitly deleted by the reauth.
android: Don't update state fragments when they are not displayed
Besides that updates don't make much sense when the fragments are not
displayed this fixes the following exception:
java.lang.IllegalStateException: Can not perform this action after
onSaveInstanceState
ikev2: Force an update of the host addresses on the first response
This is especially useful on Android where we are able to send messages
even if we don't know the correct local address (this is possible
because we don't set source addresses in outbound messages). This way
we may learn the correct local address if it e.g. changed right before
reestablishing an SA.
Updating the local address later is tricky without MOBIKE as the
responder might not update the associated IPsec SAs properly.
kernel-netlink: Allow to override xfrm_acq_expires value
When using auto=route, current xfrm_acq_expires default value
implies that tunnel can be down for up to 165 seconds, if
other peer rejected first IKE request with an AUTH_FAILED or
NO_PROPOSAL_CHOSEN error message. These error messages are
completely normal in setups where another application
pushes configuration to both strongSwans without waiting
for acknowledgment that they have updated their configurations.
This patch allows strongswan to override xfrm_acq_expires default
value by setting charon.plugins.kernel-netlink.xfrm_acq_expires in
strongswan.conf.
Adds support to pki --pub to convert public keys to other formats
including SSH keys and DNSKEYs. SSH public keys can also be read
from files in the format used by OpenSSH.
Since comments in resolv.conf are only valid at the beginning of a line
resolvconf(8) seems to have started treating any text after
'nameserver <ip>' as additional IP addresses for name servers.
Since it ignores comments, and we can easily remove the added servers
again, there is no point to add any.
Build all shared libraries with -no-undefined and link them properly
The flag is required to convince libtool on Cygwin to build DLLs. But on
Windows these shared libraries can not have undefined symbols, so we have to
link them explicitly to the libraries they reference.
For plugins this is currently not done, so only the monolithic build is
supported. The plugin loader wouldn't be able to load DLLs anyway, as
it tries to load files that don't exist on Cygwin.
Thomas Egerer [Fri, 23 Aug 2013 12:15:44 +0000 (14:15 +0200)]
ikev1: For PFS prefer DH group from IKE_SA over first configured
If PFS is configured for a CHILD_SA first try to create a list of
proposals with using DH group negotiated during phase 1. If the
resulting list is empty (i.e. the DH group(s) configured for PFS differ
from the one(s) configured for the IKE_SA), fall back to the first
configured DH group from the CHILD_SA.
This modificiation is due to the fact that it is likely that the peer
supports the same DH group for PFS it did already for the IKE_SA.
kernel-netlink: increase buffer size for RT netlink messages
Commit 940e1b0f66dc04b0853414c1f4c45fa3f6e33bdd "Filter ignored
interfaces in kernel interfaces (for events, address enumeration,
etc.)" made charon to ignore routes with unusable interfaces.
Unusable interface is one where charon has not seen RTM_NEWLINK
message from the kernel.
Sometime RTM_NEWLINK message can be 1048 bytes large. This is
24 bytes more than currently allocated buffer of 1024 bytes.
If kernel sends such a large message, then it would be silently
ignored by charon and corresponding interface would never become
usable. Hence strongSwan might resolve invalid source IP address
in get_route() function. This would prevent IPsec tunnel to be
established.
To reproduce create a VLAN interface with following command:
Martin Willi [Wed, 4 Sep 2013 08:43:35 +0000 (10:43 +0200)]
Merge branch 'ike-address-ranges'
Adds support for multiple subnets and address ranges in left/right ipsec.conf
options. As responder the connection is acceptable if the address is in one of
the ranges/subnets. To initiate connections, at least one single IP or hostname
is required for the peer address.
Martin Willi [Thu, 25 Jul 2013 13:37:13 +0000 (15:37 +0200)]
ike: support multiple addresses, ranges and subnets in IKE address config
Replace the allowany semantic by a more powerful subnet and IP range matching.
Multiple addresses, DNS names, subnets and ranges can be specified in a comma
separated list. Initiators ignore the ranges/subnets, responders match
configurations against all addresses, ranges and subnets.