netscreen@SRX3600> show security ipsec security-associations    
  Total active tunnels: 1
  ID    Gateway          Port  Algorithm       SPI      Life:sec/kb  Mon vsys
  <86769665 10.200.51.202 500  ESP:3des/sha1   4b9f0aa9 expir/expir   -   root
  >86769665 10.200.51.202 500  ESP:3des/sha1   743ca5f3 expir/expir   -   root

解决方法:

netscreen@SRX3600# set groups global system processes ntp enable
netscreen@SRX3600# set groups global system ntp boot-server 123.146.124.27
netscreen@SRX3600# set groups global system ntp server 123.146.124.27
netscreen@SRX3600# set system ntp
netscreen@SRX3600# set security zones security-zone untrust host-inbound-traffic system-services ntp

完成后重启防火墙:

netscreen@SRX3600> request system reboot

 

再次查看IPSec SA Lifetime:

netscreen@SRX3600> show security ipsec security-associations 
  Total active tunnels: 1
  ID    Gateway          Port  Algorithm       SPI      Life:sec/kb  Mon vsys
  <86769665 10.200.51.202 500  ESP:3des/sha1   4b34955f 3195/ unlim   -   root
  >86769665 10.200.51.202 500  ESP:3des/sha1   1c39b7c4 3195/ unlim   -   root

查看IKE SA也有输出了:

netscreen@SRX3600> show security ike security-associations    
Index   Remote Address  State  Initiator cookie  Responder cookie  Mode
2474320938 10.200.51.202 UP    30701f305ab6d1a7  0277d0c4d1f15e36  Aggressive