ASA 5506-X Connecting to Ubuntu 14.04 ikev1 (PSK). When I would connect to a webserver on Strongswan side from the ASA side the ASA would establish connection. That is not happening anymore and I am not sure why. I am going to move to certificate based once I fix this issue. I do not see anything on the ASA to tell it to initiate the connection.
Strongswan IPSec.conf
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conn %default
ikelifetime=1440m
keylife=60m
rekeymargin=3m
keyingtries=1
keyexchange=ikev1
authby=secret
conn haafasa
left=142.93.xxx.yyy #strongswan outside address
leftsubnet=10.xxx.yyy.zzz #network behind strongswan
leftid=142.93.xxx.yyy #IKEID sent by strongswan
#leftfirewall=yes
right=72.209.xxx.yyy #IOS outside address
rightsubnet=192.168.20.0/24 #network behind IOS
rightid=72.209.xxx.yyy #IKEID sent by IOS
auto=add
ike=aes-sha1-modp1024 #P1: modp1536 = DH group 5
esp=aes-sha1