以下の意味となります。
* :SSL-Decryption
NS:Source NAT
ND:Destination NAT
NB:Both NAT Bi-directional
[表示例]
> show session all
--------------------------------------------------------------------------------
ID Application State Type Flag Src[Sport]/Zone/Proto (translated IP[Port])
Vsys Dst[Dport]/Zone (translated IP[Port])
--------------------------------------------------------------------------------
31907 ssl ACTIVE FLOW NB 10.212.XXX.XXX[50367]/trust/6
(192.168.30.75[53516])
vsys1 172.16.XXX.XXX[4433]/untrust
(192.168.30.85[443])