--- JUNOS 10.4R6.5 built 2011-07-23 11:18:23 UTC
netscreen@srx-hqekb> show security flow session protocol icmp 
Session ID: 17644, Policy name: st-mail-dns/5, Timeout: 24, Valid
  In: YYY.YY.179.238/39680 --> XX.XX.123.195/512;icmp, If: ge-0/0/0.0, Pkts: 1, Bytes: 60
  Out: 192.168.2.20/512 --> YYY.YY.179.238/39680;icmp, If: vlan.0, Pkts: 0, Bytes: 0

Session ID: 17649, Policy name: st-mail-dns/5, Timeout: 30, Valid
  In: YYY.YY.179.238/39936 --> XX.XX.123.195/512;icmp, If: ge-0/0/0.0, Pkts: 1, Bytes: 60
  Out: 192.168.2.20/512 --> YYY.YY.179.238/39936;icmp, If: vlan.0, Pkts: 0, Bytes: 0

Session ID: 17654, Policy name: st-mail-dns/5, Timeout: 36, Valid
  In: YYY.YY.179.238/40192 --> XX.XX.123.195/512;icmp, If: ge-0/0/0.0, Pkts: 1, Bytes: 60
  Out: 192.168.2.20/512 --> YYY.YY.179.238/40192;icmp, If: vlan.0, Pkts: 0, Bytes: 0

Session ID: 17660, Policy name: st-mail-dns/5, Timeout: 40, Valid
  In: YYY.YY.179.238/40448 --> XX.XX.123.195/512;icmp, If: ge-0/0/0.0, Pkts: 1, Bytes: 60
  Out: 192.168.2.20/512 --> YYY.YY.179.238/40448;icmp, If: vlan.0, Pkts: 0, Bytes: 0

Session ID: 17667, Policy name: st-mail-dns/5, Timeout: 46, Valid
  In: YYY.YY.179.238/40704 --> XX.XX.123.195/512;icmp, If: ge-0/0/0.0, Pkts: 1, Bytes: 60
  Out: 192.168.2.20/512 --> YYY.YY.179.238/40704;icmp, If: vlan.0, Pkts: 0, Bytes: 0

Session ID: 17671, Policy name: st-mail-dns/5, Timeout: 52, Valid
  In: YYY.YY.179.238/40960 --> XX.XX.123.195/512;icmp, If: ge-0/0/0.0, Pkts: 1, Bytes: 60
  Out: 192.168.2.20/512 --> YYY.YY.179.238/40960;icmp, If: vlan.0, Pkts: 0, Bytes: 0

Session ID: 17677, Policy name: st-mail-dns/5, Timeout: 58, Valid
  In: YYY.YY.179.238/41216 --> XX.XX.123.195/512;icmp, If: ge-0/0/0.0, Pkts: 1, Bytes: 60
  Out: 192.168.2.20/512 --> YYY.YY.179.238/41216;icmp, If: vlan.0, Pkts: 0, Bytes: 0
Total sessions: 7