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https://www.cisco.com/c/en/us/td/docs/security/asa/asa84/configuration/guide/asa_84_cli_config/interface_complete_transparent.html
Nov 14, 2018 · Cisco ASA 5500 Series Configuration Guide using the CLI, 8.4 and 8.6. ... RFC 3513: Internet Protocol Version 6 (IPv6) Addressing Architecture requires that the interface identifier portion of all unicast IPv6 addresses, except those that start with binary value 000, be 64 bits long and be constructed in Modified EUI-64 format. ... Native VLAN ...
https://community.cisco.com/t5/ipv6/ipv6-support-in-asa-8-2-2/td-p/1622158
I also plan to do transparent NAT (NAT 0) for v6. Are there any major caveats using 8.2(2) for this? 8.3 or 8.4 may be an option for us if I can get approval for mem upgraded but I'd like to stay with 8.2(2) for now. Also, is there an IPv6 quick start guide or two for IPv6 on ASA by any chance? Thanks. Sent from Cisco Technical Support iPhone App
https://learningnetwork.cisco.com/thread/104496
Feb 07, 2017 · I have enabled IPv6 on an ASA. If I enter. ipv6 icmp permit any echo INET-IPV6 . ipv6 icmp permit any echo-reply INET-IPV6 . This breaks the interface in some way and you can not even ping from the ASA its self. So permitting echo has the effect of denying it ! No. explicitly allowing ICMP6 echo (and nothing else) may deny all other ICMP6.
https://quickview.cloudapps.cisco.com/quickview/bug/CSCuh98649
Cisco Bug: CSCuh98649 - ASA transparent mode IPv6 Link-local duplicate address. ... Cisco ASA 5500-X Series Firewalls ; Known Affected Releases . 8.4(4.9) 8.4(5.6) Description (partial) Symptom: In the show tech, seeing the following warning: --- Warning: duplicate link-local address: detected on interface outside. IPV6 function is stalled ...
https://tools.cisco.com/security/center/resources/countermeasures_ipv6_type_0.html
Cisco ASA, PIX, and Firewall Services Module Firewalls. The Cisco ASA 5500 Series Adaptive Security Appliance (ASA), the Cisco PIX 500 Series Security Appliance, and the Firewall Services Module (FWSM) for Cisco Catalyst 6500 Series switches and Cisco 7600 Series routers will not process and will drop IPv6 Type 0 Routing header packets by ...
https://packetpushers.net/cisco-anyconnect-ipv6/
Aug 04, 2017 · Cisco's AnyConnect seems to handle IPv6 dual-stacked clients poorly by default. Here is a way to fix it. The IPv6 must flow! Cisco's AnyConnect seems to handle IPv6 dual-stacked clients poorly by default. Here is a way to fix it. ... / Cisco AnyConnect and IPv6. Cisco AnyConnect and IPv6. John W Kerns August 4, 2017.Author: John W Kerns
https://www.reddit.com/r/networking/comments/2ys46i/ipv6_on_the_asa_5505/
IPv6 on the ASA 5505? This seems closer to /r/networking rather than my usual /r/sysadmin mainstay because nobody knows how to configure cisco over there. I have an ASA 5505 on 9.1(5) and I'm trying to get it to pull an ipv6 address on the outside interface via stateless autoconfig. ... The asa does a lot of cool stuff, but its ipv6 support ...
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151021-asa-dhcp1
Cisco ASA Software is affected by this vulnerability only if the DHCPv6 relay feature is configured. To determine whether the DHCPv6 relay feature is configured, use the show running-config ipv6 dhcprelay command and verify that the feature is enabled on at least one interface. The following example shows the DHCPv6 relay feature enabled on the interface outside:
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