Configuring NetFlow (NSEL) in a Cisco ASA Firewall

Here's a nice Cisco link for configuring NetFlow Secure Event Logging (NSEL) in a Cisco ASA Firewall. The Cisco ASA supports NetFlow version 9.

ciscoasa# configure terminal

ciscoasa(config)# flow-export ?

configure mode commands/options:
  active       Configure Netflow parameters for active connections
  delay        Configure delay for exporting NetFlow events
  destination  Configure a destination to which NetFlow records will be sent
  enable       Enable the export of flow information through NetFlow
               (deprecated)
  template     Specify the template specific configurations
ciscoasa(config)# flow-export destination ?

configure mode commands/options:
Current available interface(s):
  inside       Name of interface GigabitEthernet0/1
  outside      Name of interface GigabitEthernet0/0
ciscoasa(config)# flow-export destination inside ?

configure mode commands/options:
  Hostname or A.B.C.D  Destination IP address or name
ciscoasa(config)# flow-export destination inside 192.168.1.6 ?

configure mode commands/options:
  <1-65535>  UDP port number
ciscoasa(config)# flow-export destination inside 192.168.1.6 2055

ciscoasa(config)# flow-export template ?

configure mode commands/options:
  timeout-rate  Specify the time before templates are resent
ciscoasa(config)# flow-export template timeout-rate ?

configure mode commands/options:
  <1-3600>  Timeout in minutes (default 30 minutes)
ciscoasa(config)# flow-export template timeout-rate 5   // DEFAULT IS 30 MINS

ciscoasa(config)# flow-export delay ?

configure mode commands/options:
  flow-create  Specify delay after which flow creation event will be exported
ciscoasa(config)# flow-export delay flow-create ?

configure mode commands/options:
  <1-180>  Delay in seconds
ciscoasa(config)# flow-export delay flow-create 60

WARNING: The current delay flow-create value configuration may cause flow-update events to appear before flow-creation event.    // JUST A WARNING FOR 5 SECOND DIFFERENCE WITH flow-export active refresh-interval VALUE

ciscoasa(config)# policy-map global_policy
ciscoasa(config-pmap)#  class class-default   // MATCH ALL TRAFFIC
ciscoasa(config-pmap-c)#  flow-export event-type all destination 192.168.1.6
ciscoasa(config-pmap-c)# end
 

ciscoasa# show run flow
flow-export destination inside 192.168.1.6 2055
flow-export template timeout-rate 5
flow-export delay flow-create 60
 

ciscoasa# show run policy-map
!
policy-map type inspect dns preset_dns_map
 parameters
  message-length maximum client auto
  message-length maximum 512
  no tcp-inspection
policy-map global_policy
 class inspection_default
  inspect dns preset_dns_map
  inspect ftp
  inspect h323 h225
  inspect h323 ras
  inspect rsh
  inspect rtsp
  inspect esmtp
  inspect sqlnet
  inspect sunrpc
  inspect xdmcp
  inspect netbios
  inspect tftp
  inspect ip-options
  inspect pptp
  inspect sip  
 class tcp-traffic
  set connection advanced-options allow-probes
 class class-default
  flow-export event-type all destination 192.168.1.6
policy-map dynamic-filter_snoop_policy
 class dynamic-filter_snoop_class
  inspect dns dynamic-filter-snoop
!
ciscoasa# write memory
Building configuration...
Cryptochecksum: 9efb8040 ea39e168 2f4ab26e 3f75b246

105044 bytes copied in 1.210 secs (105044 bytes/sec)
[OK]

 

ciscoasa# show flow-export ?

  counters  Display flow-export run-time counters
ciscoasa# show flow-export counters

destination: inside 192.168.1.6 2055
  Statistics:
    packets sent                                             5514
  Errors:
    block allocation failure                                    0
    invalid interface                                           0
    template send failure                                       0
    no route to collector                                       0
    failed to get lock on block                                 0
    source port allocation failure                              0
 

Below is a snippet of the output in Solarwinds' NetFlow Traffic Analyzer (NTA).

There's no increase in ASA CPU utilization observed after NetFlow was enabled.

ciscoasa# show cpu usage
CPU utilization for 5 seconds = 4%; 1 minute: 4%; 5 minutes: 4%

ciscoasa# show processes cpu-usage 
Hardware:   ASA5515
Cisco Adaptive Security Appliance Software Version 9.8(4)10
ASLR enabled, text region 7f6204493000-7f6208801234
PC         Thread       5Sec     1Min     5Min   Process
0x0000560200394ce3   0x00007f4ac6ad7880     0.0%     0.0%     0.0%   zone_background_idb
0x00005602010644ed   0x00007f4ac6acce20     0.0%     0.0%     0.0%   webvpn_task
0x00005601ffbb58c8   0x00007f4ac6af27e0     0.0%     0.0%     0.0%   WebVPN KCD Process
0x0000560200ec7b92   0x00007f4ac6ad9920     0.0%     0.0%     0.0%   vpnlb_timer_thread
0x0000560200ec7dca   0x00007f4ac6adf020     0.0%     0.0%     0.0%   vpnlb_thread
0x0000560200eab718   0x00007f4ac6abf840     0.0%     0.0%     0.0%   vpnfol_thread_unsent
0x0000560200eab5c5   0x00007f4ac6abff80     0.0%     0.0%     0.0%   vpnfol_thread_timer
0x0000560200eab058   0x00007f4ac6abfbe0     0.0%     0.0%     0.0%   vpnfol_thread_sync
0x0000560200eaac2f   0x00007f4ac6ac0320     0.0%     0.0%     0.0%   vpnfol_thread_msg
0x00005601ff7f61e8   0x00007f4ac6ad3000     0.0%     0.0%     0.0%   VPN director state sync

 <OUTPUT TRUNCATED>

 

ciscoasa# show processes cpu-usage | exclude 0.0
Hardware:   ASA5515
Cisco Adaptive Security Appliance Software Version 9.8(4)10
PC         Thread       5Sec     1Min     5Min   Process
   -          -         4.6%     3.9%     4.1%   DATAPATH-0-1386

 <OUTPUT TRUNCATED>

 

Cisco ASA 5506-X ROMMON Upgrade

I needed to upgrade the ROMMON firmware on a Cisco ASA 5506-X firewall (with SSD or Firepower module). This is a required step before converting the ASA to FTD. You can verify the ASA ROMMON version using the show module command. Notice the Fw Version is 1.1.15 and we needed to run at least 1.1.18.

ciscoasa# show module

 

Mod  Card Type                                    Model              Serial No.

---- -------------------------------------------- ------------------ -----------

   1 ASA 5506-X with SW, 8GE Data, 1GE Mgmt, AC   ASA5506            JAD24111234

 sfr Unknown                                      N/A                JAD24111234

 

Mod  MAC Address Range                 Hw Version   Fw Version   Sw Version    

---- --------------------------------- ------------ ------------ ---------------

   1 bc5a.5681.d595 to bc5a.5681.d59e  2.4          1.1.15       9.8(2)

 sfr bc5a.5681.d594 to bc5a.5681.d594  N/A          N/A         

 

Mod  SSM Application Name           Status           SSM Application Version

---- ------------------------------ ---------------- --------------------------

 

Mod  Status             Data Plane Status     Compatibility

---- ------------------ --------------------- -------------

   1 Up Sys             Not Applicable       

 sfr Init               Not Applicable       

 

 

Use the upgrade rommon <LOCATION:FILE NAME> privileged EXEC command to perform the ROMMON upgrade. The ASA will auto reload twice during the process.

 

ciscoasa# upgrade ?

 

  rommon  Perform an upgrade on rom-monitor

ciscoasa# upgrade rommon ?

 

  disk0:  Path and filename on disk0:

  disk1:  Path and filename on disk1:

  flash:  Path and filename on flash:

ciscoasa# upgrade rommon disk0:asa5500-firmware-1118.SPA

Verifying file integrity of disk0:/asa5500-firmware-1118.SPA

 

Computed Hash   SHA2: fb0bd87c814ddbd1340f5c05208f6254

                      7d2d330ef4b9fcc0eb3b42fdd5956fc8

                      c3af17a0d74a2b057e12dbb95408f562

                      c4886bb4c4592af87a722809208d5537

                     

Embedded Hash   SHA2: fb0bd87c814ddbd1340f5c05208f6254

                      7d2d330ef4b9fcc0eb3b42fdd5956fc8

                      c3af17a0d74a2b057e12dbb95408f562

                      c4886bb4c4592af87a722809208d5537

                     

 

Digital signature successfully validated

File Name                     : disk0:/asa5500-firmware-1118.SPA

Image type                    : Release

    Signer Information

        Common Name           : abraxas

        Organization Unit     : NCS_Kenton_ASA

        Organization Name     : CiscoSystems

    Certificate Serial Number : 5F619995

    Hash Algorithm            : SHA2 512

    Signature Algorithm       : 2048-bit RSA

    Key Version               : A

Verification successful.

Proceed with reload? [confirm]

ciscoasa#

 

 

***

*** --- START GRACEFUL SHUTDOWN ---

***

*** Message to all terminals:

***

***   Performing upgrade on rom-monitor.

Shutting down isakmp

Shutting down webvpn

Shutting down sw-module

Shutting down License Controller

Shutting down File system

 

 

***

*** --- SHUTDOWN NOW ---

***

*** Message to all terminals:

***

***   Performing upgrade on rom-monitor.

Process shutdown finished

Rebooting... (status 0x9)

..

INIT: Sending processes the TERM signal

Deconfiguring network interfaces... done.

Sending all processes the TERM signal...

Sending all processes the KILL signal...

Deactivating swap...

Unmounting local filesystems...

Rebooting... ÿ

Rom image verified correctly

 

 

Cisco Systems ROMMON, Version 1.1.15, RELEASE SOFTWARE

Copyright (c) 1994-2019  by Cisco Systems, Inc.

Compiled Sat 03/30/2019  7:00:46.51 by wchen64

 

 

Current image running: Boot ROM0

Last reset cause: PowerCycleRequest

DIMM Slot 0 : Present

INFO: Rommon upgrade state: ROMMON_UPG_START (1)

INFO: Reset code: 0x00002000

 

Firmware upgrade step 1...

Looking for file 'disk0:asa5500-firmware-1118.SPA'

Located 'asa5500-firmware-1118.SPA' @ cluster 870063.

 

###########################################################################################

Image base 0x7700a018, size 9241408

LFBFF signature verified.

Objtype: lfbff_object_rommon (0x800000 bytes @ 0x7700a238)

Objtype: lfbff_object_fpga (0xd0100 bytes @ 0x7780a258)

INFO: FPGA version in upgrade image: 0x0300

INFO: FPGA version currently active: 0x0300

FPGA: No need to do FPGA upgrade  !!!

 

INFO: Rommon version currently active: 1.1.15.

INFO: Rommon version in upgrade image: 1.1.18.

Active ROMMON: Preferred 0, selected 0, booted 0

Switching SPI access to standby rommon 1.

Please DO NOT reboot the unit, updating ROMMON...................

INFO: Duplicating machine state......

Reloading now as step 1 of the rommon upgrade process...

 

Toggling power on system board...

 

 

<ASA AUTO RELOAD>

 

 

Rom image verified correctly

 

 

Cisco Systems ROMMON, Version 1.1.15, RELEASE SOFTWARE

Copyright (c) 1994-2019  by Cisco Systems, Inc.

Compiled Sat 03/30/2019  7:00:46.51 by wchen64

 

 

Current image running: Boot ROM0

Last reset cause: RP-Reset

DIMM Slot 0 : Present

INFO: Rommon upgrade state: ROMMON_UPG_START (1)

INFO: Reset code: 0x00000008

Active ROMMON: Preferred 0, selected 0, booted 0

 

Firmware upgrade step 2...

Detected current rommon upgrade is available, continue rommon upgrade process

Rommon upgrade reset 0 in progress

Reloading now as step 2 of the rommon upgrade process...

 

 

<ASA AUTO RELOAD>

 

 

Rom image verified correctly

 

 

Cisco Systems ROMMON, Version 1.1.18, RELEASE SOFTWARE

Copyright (c) 1994-2020  by Cisco Systems, Inc.

Compiled Tue 09/15/2020 20:35:13.52 by wchen64

 

 

Current image running: *Upgrade in progress* Boot ROM0

Last reset cause: BootRomUpgrade

DIMM Slot 0 : Present

INFO: Rommon upgrade state: ROMMON_UPG_START (1)

INFO: Reset code: 0x00000010

PROM B: stopping boot timer

Active ROMMON: Preferred 1, selected 1, booted 0

Looking for file 'disk0:asa5500-firmware-1118.SPA'

Located 'asa5500-firmware-1118.SPA' @ cluster 870063.

 

 

###########################################################################################

 

Image base 0x77008018, size 9241408

LFBFF signature verified.

Objtype: lfbff_object_rommon (0x800000 bytes @ 0x77008238)

Objtype: lfbff_object_fpga (0xd0100 bytes @ 0x77808258)

INFO: Second time firmware update state: False

INFO: Rommon upgrade state: ROMMON_UPG_TEST

 

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

!! Please manually or auto boot ASAOS now to complete firmware upgrade !!

 

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

 

Platform ASA5506 with 4096 Mbytes of main memory

 

MAC Address: bc:5a:56:81:d5:95

 

 

Use BREAK or ESC to interrupt boot.

 

Use SPACE to begin boot immediately.

 

Boot in 10 seconds

 

 

<OUTPUT TRUNCATED>

 

 

Notice the ROMMON firmware version is now 1.1.18.

 

ciscoasa# show module

 

Mod  Card Type                                    Model              Serial No.

---- -------------------------------------------- ------------------ -----------

   1 ASA 5506-X with SW, 8GE Data, 1GE Mgmt, AC   ASA5506            JAD24111234

 sfr Unknown                                      N/A                JAD24111234

 

Mod  MAC Address Range                 Hw Version   Fw Version   Sw Version    

---- --------------------------------- ------------ ------------ ---------------

   1 bc5a.5681.d595 to bc5a.5681.d59e  2.4          1.1.18       9.8(2)

 sfr bc5a.5681.d594 to bc5a.5681.d594  N/A          N/A         

 

Mod  SSM Application Name           Status           SSM Application Version

---- ------------------------------ ---------------- --------------------------

 

Mod  Status             Data Plane Status     Compatibility

---- ------------------ --------------------- -------------

   1 Up Sys             Not Applicable       

 sfr Init               Not Applicable       

 

Cisco ASA 5506-X Security Plus License

I had to configure a pair of Cisco ASA 5506-X firewalls and apply a Security Plus license in order to support the Active/Standby Failover (High Availability) feature. You'll find the comparison between the Base license vs. Security Plus license feature on this link.

You'll be prompted a warning message for the lack of failover license support when you try to configure the standby (failover) IP address on an ASA interface.

ASA5506-X(config-if)# interface BVI1

ASA5506-X(config-if)# nameif inside

ASA5506-X(config-if)# security-level 100

ASA5506-X(config-if)# ip address 192.168.1.1 255.255.255.0 standby 192.168.1.2

WARNING: Cannot configure standby IP address because this unit lack failover license support.

 

 

ASA5506-X# show version

 

Cisco Adaptive Security Appliance Software Version 9.8(2)

Firepower Extensible Operating System Version 2.2(2.52)

Device Manager Version 7.8(2)

 

Compiled on Thu 02-Apr-20 10:19 PDT by builders

System image file is "disk0:/asa982-lfbff-k8.SPA"

Config file at boot was "startup-config"

 

ASA5506-X up 25 mins 29 secs

 

Hardware:   ASA5506, 4096 MB RAM, CPU Atom C2000 series 1250 MHz, 1 CPU (4 cores)

Internal ATA Compact Flash, 8000MB

BIOS Flash M25P64 @ 0xfed01000, 16384KB

 

Encryption hardware device : Cisco ASA Crypto on-board accelerator (revision 0x1)

                             Number of accelerators: 1

 

 1: Ext: GigabitEthernet1/1  : address is bc5a.5681.d596, irq 255

 2: Ext: GigabitEthernet1/2  : address is bc5a.5681.d597, irq 255

 3: Ext: GigabitEthernet1/3  : address is bc5a.5681.d598, irq 255

 4: Ext: GigabitEthernet1/4  : address is bc5a.5681.d599, irq 255

 5: Ext: GigabitEthernet1/5  : address is bc5a.5681.d59a, irq 255

 6: Ext: GigabitEthernet1/6  : address is bc5a.5681.d59b, irq 255

 7: Ext: GigabitEthernet1/7  : address is bc5a.5681.d59c, irq 255

 8: Ext: GigabitEthernet1/8  : address is bc5a.5681.d59d, irq 255

 9: Int: Internal-Data1/1    : address is bc5a.5681.d595, irq 255

10: Int: Internal-Data1/2    : address is 0000.0001.0002, irq 0

11: Int: Internal-Control1/1 : address is 0000.0001.0001, irq 0

12: Int: Internal-Data1/3    : address is 0000.0001.0003, irq 0

13: Ext: Management1/1       : address is bc5a.5681.d595, irq 0

14: Int: Internal-Data1/4    : address is 0000.0100.0001, irq 0

 

Licensed features for this platform:

Maximum Physical Interfaces       : Unlimited      perpetual

Maximum VLANs                     : 5              perpetual

Inside Hosts                      : Unlimited      perpetual

Failover                          : Disabled       perpetual

Encryption-DES                    : Enabled        perpetual

Encryption-3DES-AES               : Enabled        perpetual

Carrier                           : Disabled       perpetual

AnyConnect Premium Peers          : 2              perpetual

AnyConnect Essentials             : Disabled       perpetual

Other VPN Peers                   : 10             perpetual

Total VPN Peers                   : 12             perpetual

AnyConnect for Mobile             : Disabled       perpetual

AnyConnect for Cisco VPN Phone    : Disabled       perpetual

Advanced Endpoint Assessment      : Disabled       perpetual

Shared License                    : Disabled       perpetual

Total TLS Proxy Sessions          : 2              perpetual

Botnet Traffic Filter             : Disabled       perpetual

Cluster                           : Disabled       perpetual

 

This platform has a Base license.

 

Serial Number: JAD24111234

Running Permanent Activation Key: 0xd71be575 0xb069db6f 0xb0523db4 0x949058c8 0x44221234

Configuration register is 0x1

Image type                : Release

Key Version               : A

Configuration last modified by enable_15 at 11:56:07.469 UTC Tue Nov 10 2020

 

 

You'll need to register and retrieve the license key in the Cisco Licensing portal. Next, apply the license key using the global config activation-key <KEY> command and issue a reload for the license to take effect.

 

ASA5506-X(config-if)# activation-key 3c2dfa64 2c9281c9 5491edd8 8b4c40a4 cb356789

Validating activation key. This may take a few minutes...

Failover is different.

   running permanent activation key: Restricted(R)

   new permanent activation key: Unrestricted(UR)

WARNING: The running activation key was not updated with the requested key.

Proceed with update flash activation key? [confirm] <ENTER>

The flash permanent activation key was updated with the requested key,

and will become active after the next reload.

ASA5506-X(config-if)# end

ASA5506-X# reload

Proceed with reload? [confirm]

ASA5506-X#

 

 

***

*** --- START GRACEFUL SHUTDOWN ---

Shutting down isakmp

Shutting down webvpn

Shutting down sw-module

Shutting down License Controller

Shutting down File system

 

 

 

***

*** --- SHUTDOWN NOW ---

Process shutdown finished

Rebooting... (status 0x9)

 

 

<OUTPUT TRUNCATED>

 

 

Notice the ASA 5506-X now has the Security Plus license as well as the Maximum VLANs is now 30, Failover has been enabled for Active/Standby and VPN peers was increased to 50 (for AnyConnect VPN). The support for AnyConnect requires a separate AnyConnect Plus or Apex license.

 

ASA5506-X# show version

 

Cisco Adaptive Security Appliance Software Version 9.8(2)

Firepower Extensible Operating System Version 2.2(2.52)

Device Manager Version 7.8(2)

 

Compiled on Thu 02-Apr-20 10:19 PDT by builders

System image file is "disk0:/asa982-lfbff-k8.SPA"

Config file at boot was "startup-config"

 

ASA5506-X up 13 mins 34 secs

 

Hardware:   ASA5506, 4096 MB RAM, CPU Atom C2000 series 1250 MHz, 1 CPU (4 cores)

Internal ATA Compact Flash, 8000MB

BIOS Flash M25P64 @ 0xfed01000, 16384KB

 

Encryption hardware device : Cisco ASA Crypto on-board accelerator (revision 0x1)

                             Number of accelerators: 1

 

 1: Ext: GigabitEthernet1/1  : address is bc5a.5681.d596, irq 255

 2: Ext: GigabitEthernet1/2  : address is bc5a.5681.d597, irq 255

 3: Ext: GigabitEthernet1/3  : address is bc5a.5681.d598, irq 255

 4: Ext: GigabitEthernet1/4  : address is bc5a.5681.d599, irq 255

 5: Ext: GigabitEthernet1/5  : address is bc5a.5681.d59a, irq 255

 6: Ext: GigabitEthernet1/6  : address is bc5a.5681.d59b, irq 255

 7: Ext: GigabitEthernet1/7  : address is bc5a.5681.d59c, irq 255

 8: Ext: GigabitEthernet1/8  : address is bc5a.5681.d59d, irq 255

 9: Int: Internal-Data1/1    : address is bc5a.5681.d595, irq 255

10: Int: Internal-Data1/2    : address is 0000.0001.0002, irq 0

11: Int: Internal-Control1/1 : address is 0000.0001.0001, irq 0

12: Int: Internal-Data1/3    : address is 0000.0001.0003, irq 0

13: Ext: Management1/1       : address is bc5a.5681.d595, irq 0

14: Int: Internal-Data1/4    : address is 0000.0100.0001, irq 0

 

Licensed features for this platform:

Maximum Physical Interfaces       : Unlimited      perpetual

Maximum VLANs                     : 30             perpetual

Inside Hosts                      : Unlimited      perpetual

Failover                          : Active/Standby perpetual

Encryption-DES                    : Enabled        perpetual

Encryption-3DES-AES               : Enabled        perpetual

Carrier                           : Disabled       perpetual

AnyConnect Premium Peers          : 4              perpetual

AnyConnect Essentials             : Disabled       perpetual

Other VPN Peers                   : 50             perpetual

Total VPN Peers                   : 50             perpetual

AnyConnect for Mobile             : Disabled       perpetual

AnyConnect for Cisco VPN Phone    : Disabled       perpetual

Advanced Endpoint Assessment      : Disabled       perpetual

Shared License                    : Disabled       perpetual

Total TLS Proxy Sessions          : 160            perpetual

Botnet Traffic Filter             : Disabled       perpetual

Cluster                           : Disabled       perpetual

 

This platform has an ASA 5506 Security Plus license.

 

Serial Number: JAD24111234

Running Permanent Activation Key: 0x3c2dfa64 0x2c9281c9 0x5491edd8 0x8b4c40a4 0xcb356789

Configuration register is 0x1

Image type                : Release

Key Version               : A

Configuration has not been modified since last system restart.

Configure Cisco AnyConnect in ASA Multiple Context Mode

I tried the popular Beef Wellington (English meat pie) at Bread Street Kitchen Marina Bay Sands, which is owned by celebrity chef Gordon Ramsay. The dining experience was nice and had free bread while waiting for my order. The serving was generous and the meat was very tender (ordered medium rare). I strolled around Garden's By the Bay afterwards and noticed most of the attractions such as the Floral Fantasy, Flower Dome and Supertree Skyway would need pre-purchased online tickets (no more walk-ins) due to COVID-19 crowd control and physical distancing.

 

You'll need to apply first the AnyConnect Apex license SKU/part: L-AC-APX-LIC= under the System context, which is a term based of 1-, 3- or 5-year subscription. The Apex license would take effect immediately and doesn't require a reboot. Also note the Total VPN peers supported on the specific platform (in this case 2500 max VPN sessions).

 

You can't use the default AnyConnect Premium Peers as it will display an error requiring for an Apex license.

 

ciscoasa/pri/act(config)# class AnyConnect

ciscoasa/pri/act(config-class)# limit-resource VPN AnyConnect 4

WARNING: Multi-mode remote access VPN support requires an AnyConnect Apex license

 

ciscoasa/pri/act/admin# changeto system

ciscoasa/pri/act# show version

 

<OUTPUT TRUNCATED>

 

 

Licensed features for this platform:

Maximum Physical Interfaces       : Unlimited      perpetual

Maximum VLANs                     : 300            perpetual

Inside Hosts                      : Unlimited      perpetual

Failover                          : Active/Active  perpetual

Encryption-DES                    : Enabled        perpetual

Encryption-3DES-AES               : Enabled        perpetual

Security Contexts                 : 10             perpetual

Carrier                           : Disabled       perpetual

AnyConnect Premium Peers          : 2              perpetual   // ANYCONNECT APEX LICENSE

AnyConnect Essentials             : Disabled       perpetual

Other VPN Peers                   : 2500           perpetual  

Total VPN Peers                   : 2500           perpetual   // TOTAL VPN SESSION SUPPORTED ON THE PLATFORM

AnyConnect for Mobile             : Disabled       perpetual

AnyConnect for Cisco VPN Phone    : Disabled       perpetual

Advanced Endpoint Assessment      : Disabled       perpetual

Shared License                    : Disabled       perpetual

Total TLS Proxy Sessions          : 2              perpetual

Botnet Traffic Filter             : Disabled       perpetual

IPS Module                        : Disabled       perpetual

Cluster                           : Enabled        perpetual

Cluster Members                   : 2              perpetual

 

This platform has an ASA5545 VPN Premium license.

 

 

Failover cluster licensed features for this platform:   // ACTIVE-STANDBY FAILOVER PAIR

Maximum Physical Interfaces       : Unlimited      perpetual

Maximum VLANs                     : 300            perpetual

Inside Hosts                      : Unlimited      perpetual

Failover                          : Active/Active  perpetual

Encryption-DES                    : Enabled        perpetual

Encryption-3DES-AES               : Enabled        perpetual

Security Contexts                 : 12             perpetual

Carrier                           : Disabled       perpetual

AnyConnect Premium Peers          : 4              perpetual   // 2x FROM ACTIVE FW + 2x FROM STANDBY FW

AnyConnect Essentials             : Disabled       perpetual

Other VPN Peers                   : 2500           perpetual

Total VPN Peers                   : 2500           perpetual

AnyConnect for Mobile             : Disabled       perpetual

AnyConnect for Cisco VPN Phone    : Disabled       perpetual

Advanced Endpoint Assessment      : Disabled       perpetual

Shared License                    : Disabled       perpetual

Total TLS Proxy Sessions          : 4              perpetual

Botnet Traffic Filter             : Disabled       perpetual

IPS Module                        : Disabled       perpetual

Cluster                           : Enabled        perpetual

 

This platform has an ASA5545 VPN Premium license.

 

<OUTPUT TRUNCATED>

 

 

ciscoasa/pri/act# configure terminal

ciscoasa/pri/act(config)# activation-key 1c05d652 e83add97 3573e568 dcfc1234 07335678

Validating activation key. This may take a few minutes...

Both Running and Flash permanent activation key was updated with the requested key.

ciscoasa/pri/act(config)#

ciscoasa/pri/act(config)# show version

 

<OUTPUT TRUNCATED>

 

 

Licensed features for this platform:

Maximum Physical Interfaces       : Unlimited      perpetual

Maximum VLANs                     : 300            perpetual

Inside Hosts                      : Unlimited      perpetual

Failover                          : Active/Active  perpetual

Encryption-DES                    : Enabled        perpetual

Encryption-3DES-AES               : Enabled        perpetual

Security Contexts                 : 10             perpetual

Carrier                           : Disabled       perpetual

AnyConnect Premium Peers          : 2500           perpetual

AnyConnect Essentials             : Disabled       perpetual

Other VPN Peers                   : 2500           perpetual

Total VPN Peers                   : 2500           perpetual

AnyConnect for Mobile             : Enabled        perpetual

AnyConnect for Cisco VPN Phone    : Enabled        perpetual

Advanced Endpoint Assessment      : Enabled        perpetual

Shared License                    : Disabled       perpetual

Total TLS Proxy Sessions          : 2              perpetual

Botnet Traffic Filter             : Disabled       perpetual

IPS Module                        : Disabled       perpetual

Cluster                           : Enabled        perpetual

Cluster Members                   : 2              perpetual

 

This platform has an ASA5545 VPN Premium license.

 

 

Failover cluster licensed features for this platform:

Maximum Physical Interfaces       : Unlimited      perpetual

Maximum VLANs                     : 300            perpetual

Inside Hosts                      : Unlimited      perpetual

Failover                          : Active/Active  perpetual

Encryption-DES                    : Enabled        perpetual

Encryption-3DES-AES               : Enabled        perpetual

Security Contexts                 : 12             perpetual

Carrier                           : Disabled       perpetual

AnyConnect Premium Peers          : 2500           perpetual

AnyConnect Essentials             : Disabled       perpetual

Other VPN Peers                   : 2500           perpetual

Total VPN Peers                   : 2500           perpetual

AnyConnect for Mobile             : Enabled        perpetual

AnyConnect for Cisco VPN Phone    : Enabled        perpetual

Advanced Endpoint Assessment      : Enabled        perpetual

Shared License                    : Disabled       perpetual

Total TLS Proxy Sessions          : 4              perpetual

Botnet Traffic Filter             : Disabled       perpetual

IPS Module                        : Disabled       perpetual

Cluster                           : Enabled        perpetual

 

This platform has an ASA5545 VPN Premium license.

 

<OUTPUT TRUNCATED>

 

 

Create a VPN Resource Class and allocate the number of AnyConnect license under System context. You can divide the AnyConnect resource to other Resource Class but make sure their total equals to the maximum VPN count the platform supports. Since this is the only context using AnyConnect, I gave it the full 2500 count with a burst of up to 1500.

 

ciscoasa/pri/act(config)# class AnyConnect 

ciscoasa/pri/act(config-class)# limit-resource VPN ?

 

class mode commands/options:

  AnyConnect  AnyConnect Premium license limit. These are guaranteed for a

              context and shouldn't exceed the system capacity when combined

              across all contexts.

  Burst       Burst limit over the configured limit. This burst limit is not

              guaranteed. The context may take this resource if it is available

              on the device at run time.

  Other       Other VPN sessions which include Site-to-Site, IKEv1 RA and L2tp

              Sessions. These are guaranteed for a context and shouldn't exceed

              the system capacity when combined across all contexts.

  ikev1       Configure IKEv1 specific resources.

 

ciscoasa/pri/act(config-class)# limit-resource VPN AnyConnect ?

 

class mode commands/options:

  WORD  Value of resource limit (in <value> or <value>%)

 

ciscoasa/pri/act(config-class)# limit-resource VPN AnyConnect 2500

ciscoasa/pri/act(config-class)# limit-resource VPN Burst AnyConnect 1500

 

 

Create a new directory (I named it shared). Configure the new context to use/point on this new storage and add the AnyConnect Resource Class under the System context.

 

ciscoasa/pri/act(config)# mkdir shared

 

Create directory filename [shared]?

 

Created dir disk0:/shared

ciscoasa/pri/act(config)# context RA-VPN

Creating context 'RA-VPN'... Done. (1)

ciscoasapri/act(config-ctx)# member AnyConnect

ciscoasa/pri/act(config-ctx)#  description FOR ANYCONNECT RA VPN

ciscoasa/pri/act(config-ctx)#  allocate-interface GigabitEthernet0/0

ciscoasa/pri/act(config-ctx)#  allocate-interface GigabitEthernet0/1.50

ciscoasa/pri/act(config-ctx)#  config-url disk0:/RA-VPN.cfg

 

WARNING: Could not fetch the URL disk0:/RA-VPN.cfg

INFO: Creating context with default config

ciscoasa/pri/act(config-ctx)# storage-url shared disk0:/shared shared

 

 

Transfer the AnyConnect image from the main flash/disk0 space to the new shared directory.

 

ciscoasa/pri/act(config)# copy disk0:/anyconnect-win-4.8.03052-webdeploy-k9.pkg disk0:/shared

 

Source filename [anyconnect-win-4.8.03052-webdeploy-k9.pkg]?

 

Destination filename [/shared/anyconnect-win-4.8.03052-webdeploy-k9.pkg]?

 

Copy in progress...CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

 

<OUTPUT TRUNCATED>

 

 

ciscoasa/pri/act(config)# dir shared/

 

Directory of disk0:/shared/

 

107    -rwx  72771616     01:56:18 Oct 27 2020  anyconnect-win-4.8.03052-webdeploy-k9.pkg

 

 

Configure AnyConnect (webvpn) and the rest of the config in the new Context.

 

ciscoasa/pri/act(config)# changeto context RA-VPN

ciscoasa/pri/act/RA-VPN(config)# webvpn

ciscoasa/pri/act/RA-VPN(config-webvpn)# enable outside

ciscoasa/pri/act/RA-VPN(config-webvpn)# anyconnect enable

ciscoasa/pri/act/RA-VPN(config-webvpn)# anyconnect image shared:/anyconnect-win-4.8.03052-webdeploy-k9.pkg 1