2 Commits

Author	SHA1	Message	Date
Michael Tremer	cda384a280	ipsec: Do not reject connections in on-demand mode ... When an on-demand VPN connection is not up, the packets will traverse the firewall and be rejected by the IPSECBLOCK chain which will cause that an ICMP error message will be sent to the client. If that does not happen and the packet is being silently dropped, the client will retransmit and by then the VPN connection will hopefully be up. Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>	2017-03-24 13:24:42 +01:00
Michael Tremer	80fbd89949	ipsec: Add block rules to avoid conntrack entries ... If an IPsec VPN connections is not established, there are rare cases when packets are supposed to be sent through that said tunnel and incorrectly handled. Those packets are sent to the default gateway an entry for this connection is created in the connection tracking table (usually only happens to UDP). All following packets are sent the same route even after the tunnel has been brought up. That leads to SIP phones not being able to register among other things. This patch adds firewall rules that these packets are rejected. That will sent a notification to the client that the tunnel is not up and avoid the connection to be added to the connection tracking table. Apart from a small performance penalty there should be no other side-effects. Fixes: #10908 Signed-off-by: Michael Tremer <michael.tremer@ipfire.org> Cc: tomvend@rymes.com Cc: daniel.weismueller@ipfire.org Cc: morlix@morlix.de Reviewed-by: Timo Eissler <timo.eissler@ipfire.org>	2015-10-15 22:44:47 +01:00