This section lists the system requirements to run this release. New, changed, and deprecated syslog messages are listed in the syslog message guide. A new Section 0 has been added to the NAT rule table. This section is exclusively for the use of the system. Any NAT rules that the system needs for normal functioning are added to this section, and these rules take priority over any rules you create. Previously, system-defined rules were added to Section 1, and user-defined rules could interfere with proper system functioning.
You cannot add, edit, or delete Section 0 rules, but you will see them in show nat detail command output. We changed the default SIP policy map to include the no traffic-non-sip command. This way, you can list out the unwanted combinations, and default to allowing all other combinations. We added the following command: drop mcc. You can configure a service policy to set the server maximum segment size MSS for SYN-cookie generation for embryonic connections upon reaching the embryonic connections limit.
This is meaningful for service policies where you are also setting embryonic connection maximums. Improved CPU usage and performance for many-to-one and one-to-many connections. This improves performance and CPU usage in situations where many connections are going to the same server such as a load balancer or web server , or one endpoint is making connections to many remote hosts.
We changed the following commands: clear local-host deprecated , show local-host. New VMware hardware versions have been added to the vi. If you know that your cluster will be fewer than the maximum of 16 units, then we recommend that you set the actual planned number of units.
Setting the maximum units lets the cluster manage resources better. For example, if you use port address translation PAT , then the control unit can allocate port blocks to the planned number of members, and it will not have to reserve ports for extra units you don't plan to use. We have added additional outputs for the show cluster history command. You can use crypto ca permit-weak-crypto command to override these restrictions. If you explicitly configure the ASA to use the RSA key with the ssh key-exchange hostkey rsa command, you must generate a key that is bits or higher.
SSH version 1 is no longer supported—The ssh version command is removed. You can no longer use MD5 for user authentication. A VTI tunnel source interface can have an IPv6 address, which you can configure to use as the tunnel endpoint. If the tunnel source interface has multiple IPv6 addresses, you can specify which address to be used, else the first IPv6 global address in the list is used by default.
The number of maximum VTIs to be configured on a device has been increased from to This section provides the upgrade path information and a link to complete your upgrade. CLI: Use the show version command. This table provides upgrade paths for ASA.
Some older versions require an intermediate upgrade before you can upgrade to a newer version. Recommended versions are in bold. ASA 9. To complete your upgrade, see the ASA upgrade guide. The open and resolved bugs for this release are accessible through the Cisco Bug Search Tool. This web-based tool provides you with access to the Cisco bug tracking system, which maintains information about bugs and vulnerabilities in this product and other Cisco hardware and software products.
You must have a Cisco. If you do not have one, you can register for an account. If you do not have a Cisco support contract, you can only look up bugs by ID; you cannot run searches. The following table lists select open bugs at the time of this Release Note publication.
Lina traceback and reaload on thread name Unicorn Admin Handler. The following table lists select resolved bugs at the time of this Release Note publication. FTD active unit might drop interface failover messages with host-move-pkt drop reason. Core-local block alloc failure on cores where CP is pinned leading to drops. Slow file transfer or file upload with SSL policy is applied with Decrypt resign action.
Traceback and reload on watchdog during failover. In some cases snmwapwalk for ifXTable may not return data interfaces. ASA traceback and reload when copying files with long destination filenames using cluster command.
DHCP reservation fails to apply reserved address for some devices. Web portal persistent redirects when certificate authentication is used.
Ambiguous command error is shown for 'show route bgp' or 'show route isis' if DNS lookup is enabled. FTDv 6. CPU hogs less than 10 msec are produced contrary to documentation. Be sure to check the upgrade guidelines for each release between your starting version and your ending version. You may need to change your configuration before upgrading in some cases, or else you could experience an outage.
ASA 9. To complete your upgrade, see the ASA upgrade guide. The open and resolved bugs for this release are accessible through the Cisco Bug Search Tool. This web-based tool provides you with access to the Cisco bug tracking system, which maintains information about bugs and vulnerabilities in this product and other Cisco hardware and software products.
You must have a Cisco. If you do not have one, you can register for an account. If you do not have a Cisco support contract, you can only look up bugs by ID; you cannot run searches. The following table lists select open bugs at the time of this Release Note publication. Crash observed on control unit of 6node SSP cluster when pat is configured on s2s traffic 7.
The following table lists select resolved bugs at the time of this Release Note publication. The 'show cluster info trace' output is overwhelmed by 'tag does not exist' messages. Error messages "Updating Interface Status failed" seen on and WM Standby device do not send out coldstart trap after reboot.
Add a warning when member interfaces of the port-channel are different between active and standby. ASAv crashed when tried to upgrade or reload the 16 node cluster setup. ASA: Drop reason is missing from lines of asp-drop capture. Skip to content Skip to search Skip to footer. Available Languages. Download Options. Updated: December 1, This section lists new features for each release. Note New, changed, and deprecated syslog messages are listed in the syslog message guide.
Network-service objects and their use in policy-based routing and access control You can configure network-service objects and use them in extended access control lists for use in policy-based routing route maps and access control groups.
Enhancements to show access-list element-count output and show tech-support content The output of the show access-list element-count has be enhanced to show the following: When used in the system context in multiple-context mode, the output shows the element count for all access lists across all the contexts.
Note Be sure to check the upgrade guidelines for each release between your starting version and your ending version. Note You must have a Cisco. Identity-based firewall security provides more flexible access control to enforce policies based on user and group identities and the point of access. It also simplifies policy configuration: Administrators can write policies that correspond to business rules, which increases security, enhances ease of use, and requires fewer policies to manage.
Similarly, Cisco TrustSec integration enables security group tags to be embedded into the Cisco DNA of the network, providing administrators with the ability to develop and enforce better, more granular policies.
ASA Software integrates with Cisco Cloud Web Security to enable organizations to gain a centralized content security solution combined with localized network security. Unlike all-in-one approaches employed by many competitive offerings, the architectural approach employed by Cisco ASA Software provides much better performance and efficacy. Administrators can choose to perform deep content scanning on a subset of traffic based on network address, Microsoft Active Directory user or group name, or hosts residing inside a specific security context.
As a result, ASA Software can deliver uncompromising security with superior performance. IPv6 clientless support is also provided.
While most competitive offerings experience an average of an 80 percent degradation in performance when transitioning from an IPv4 to an IPv6 traffic pattern, ASA Software supports IPv6 remote access connections with less than a 15 percent performance impact. ASA Software also provides comprehensive next-generation encryption capabilities, which includes the Suite B cryptographic standards for remote access and site-to-site connections using an IPsec tunnel.
Table 2. Features and Benefits.
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