hi, i am trying to use strongswan client to connect to server. i got an error from client:<br><br>.....<br>[IKE]signature validation failed, looking for another key<br>...<br>[CFG]subject certificate invalid(valid from may 16 15:14:10 2016 to May 16 15:14:10 2019)<br>....<br>[ENC]generating INFORMATIONAL request 2 [N (AUTH_FAILED)]<br>....<br><br><br>my ipsec.conf is:<br>-------------------------------------------------------------------------<br>config setup<br>    uniqueids=never<br><br><br><br><br># also supports iOS PSK and Shrew on Windows<br>conn android_xauth_psk<br>    keyexchange=ikev1<br>    left=%defaultroute<br>    leftauth=psk<br>    leftsubnet=0.0.0.0/0<br>    right=%any<br>    rightauth=psk<br>    rightauth2=xauth<br>    rightsourceip=10.0.0.0/24<br>    auto=add<br><br># compatible with "strongSwan VPN Client" for Android 4.0+<br># and Windows 7 cert mode.<br>conn networkmanager-strongswan<br>    keyexchange=ikev2<br>    left=%defaultroute<br>    leftauth=pubkey<br>    leftsubnet=0.0.0.0/0<br>    leftcert=servercert.pem<br>    right=%any<br>    rightauth=pubkey<br>    rightsourceip=10.0.0.0/24<br>    rightcert=clientcert.pem<br>    auto=add<br><br><br><br><br>my strongswan.conf is:<br>---------------------------------------------------------------------------------------------<br>charon {<br>       duplicheck.enable = no<br><br><br>       dns1 = 192.168.0.1<br>       dns2 = 192.168.0.1<br><br>       # for Windows only<br>       #nbns1 = 208.67.222.222<br>       #nbns2 = 208.67.220.220<br><br>       filelog {<br>               /var/log/strongswan.charon.log {<br>                   time_format = %b %e %T<br>                   default = 2<br>                   append = no<br>                   flush_line = yes<br>               }<br>       }<br>}<br><br><br><br><br>ipsec.secrets is:<br>----------------------------------------------------------------<br>: RSA serverkey.pem<br><br><br><br><br><br>please give me some help to solve this problem. thanks.<br>