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.
Signed-off-by: Ansis Atteka <aatteka@nicira.com>
Can be opened either with "man ipsec pki" or "man ipsec-pki".
Since man(1) only supports one level of subpages, the forthcoming man
pages for each command will have to be opened with "man pki --<command>".
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.
Fixes#410.
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.
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.
Commit 940e1b0f66 "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:
vconfig add eth1 12
Tobias Brunner