Thank you for response
ASDM copy is 731-101
and this is ASA output
ciscoasa(config)# sh version
Cisco Adaptive Security Appliance Software Version 8.4(2)
Device Manager Version 7.3(1)101
Compiled on Wed 15-Jun-11 18:17 by builders
System image file is "Unknown, monitor mode tftp booted image"
Config file at boot was "startup-config"
ciscoasa up 9 hours 39 mins
Hardware: ASA 5520, 1024 MB RAM, CPU Pentium II 1000 MHz
Internal ATA Compact Flash, 256MB
BIOS Flash unknown @ 0x0, 0KB
0: Ext: GigabitEthernet0 : address is 0000.ab3e.a500, irq 0
1: Ext: GigabitEthernet1 : address is 0000.ab3e.a501, irq 0
2: Ext: GigabitEthernet2 : address is 0000.ab3e.a502, irq 0
3: Ext: GigabitEthernet3 : address is 0000.ab3e.a503, irq 0
4: Ext: GigabitEthernet4 : address is 0000.ab3e.a504, irq 0
5: Ext: GigabitEthernet5 : address is 0000.ab3e.a505, irq 0
Licensed features for this platform:
Maximum Physical Interfaces : Unlimited perpetual
Maximum VLANs : 100 perpetual
Inside Hosts : Unlimited perpetual
Failover : Active/Active perpetual
VPN-DES : Enabled perpetual
VPN-3DES-AES : Enabled perpetual
Security Contexts : 5 perpetual
GTP/GPRS : Disabled perpetual
AnyConnect Premium Peers : 25 perpetual
AnyConnect Essentials : Disabled perpetual
Other VPN Peers : 5000 perpetual
Total VPN Peers : 0 perpetual
Shared License : Enabled perpetual
AnyConnect for Mobile : Disabled perpetual
AnyConnect for Cisco VPN Phone : Disabled perpetual
Advanced Endpoint Assessment : Enabled perpetual
UC Phone Proxy Sessions : 10 perpetual
Total UC Proxy Sessions : 10 perpetual
Botnet Traffic Filter : Enabled perpetual
Intercompany Media Engine : Enabled perpetual
This platform has an ASA 5520 VPN Plus license.
Serial Number: 123456789AB
Running Permanent Activation Key: 0xb23bcf4a 0x1c713b4f 0x7d53bcbc 0xc4f8d09c 0x0e24c6b6
Configuration register is 0x0
Configuration last modified by enable_15 at 07:55:18.479 UTC Mon Sep 24 2018
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