Hi,I have a probelem with one of my s2s vpn tunnel. i am gettign the below error message "group = x.x.x.x, ip =y.y.y.y, duplicate phase 2 packet detected. retransmitting last packet" . the tunnel was down with out making any chages at both ends. chna...
Network Security
Engage with peers and experts on network security topics such as Secure Firewall Threat Defense, Adaptive Security Appliance, Secure Firewall Management Center, and Security Cloud Control.
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for
- Cisco Community
- Technology and Support
- Security
- Network Security
Options
- Mark all as New
- Mark all as Read
- Float this item to the top
- Subscribe
- Bookmark
- Subscribe to RSS Feed
- Threaded format
- Linear Format
- Sort by Topic Start Date
Labels
-
AAA
(9) -
Access Control Server (ACS)
(6) -
Access List
(4) -
ACI
(10) -
Advanced Threats
(1) -
AMP for Endpoints
(1) -
AnyConnect
(3) -
APIs
(1) -
Appliances
(18) -
ASA
(1) -
ASR 1000 Series
(1) -
Branch Router
(2) -
Buying Recommendation
(87) -
Catalyst 2000
(1) -
Catalyst 3000
(2) -
Catalyst 4000
(1) -
Catalyst 6000
(1) -
Catalyst 8000
(1) -
Catalyst 9000
(2) -
Catalyst Switch
(3) -
Catalyst Wireless Controllers
(1) -
Cisco
(1) -
Cisco Adaptive Security Appliance (ASA)
(9,630) -
Cisco Bugs
(56) -
Cisco Cafe
(25) -
Cisco CLI Analyzer
(1) -
Cisco Cloud Services Router
(1) -
Cisco Defense Orchestrator (CDO)
(149) -
Cisco Firepower Device Manager (FDM)
(812) -
Cisco Firepower Management Center (FMC)
(2,909) -
Cisco Firepower Threat Defense (FTD)
(3,163) -
Cisco Press Cafe
(1) -
Cisco Secure Firewall Device Management (FDM)
(47) -
Cisco Secure Firewall Management Center (FMC)
(246) -
Cisco Secure Firewall Threat Defense (FTD)
(297) -
Cisco Security Cloud Control
(16) -
Cisco Security Manager (CSM)
(3) -
Cisco Software
(19) -
CISCO START ANZ
(1) -
Cisco Threat Response
(1) -
Cisco Vulnerability Management
(46) -
Cloud
(1) -
Cloud Provisioning
(1) -
Cloud Security
(3) -
Community Bug or Issue
(1) -
Community Feedback Forum
(31) -
Community Ideas
(18) -
Compliance and Posture
(1) -
Crypto
(1) -
CSC Content with No Valid Community to Post
(1) -
CUBE
(1) -
CUCM
(1) -
Data Center Networking
(1) -
Device Admin
(14) -
EEM Scripting
(1) -
Emergency Responder
(1) -
Endpoint Security
(6) -
Enterprise Agreement
(1) -
Event Analysis
(264) -
FirePOWER
(1) -
Firepower Chassis Manager (FCM)
(2) -
Firepower Device Manager (FDM)
(16) -
Firepower Management Center (FMC)
(408) -
Firepower Threat Defense (FTD)
(221) -
Firewall Migration Tool (FMT)
(37) -
Firewalls
(1,171) -
FMC
(1) -
General
(2) -
Guest
(1) -
Identity Services Engine (ISE)
(9) -
IE3300
(1) -
Integrated Security
(8) -
Integrated Security Architecture
(1) -
Integrations
(4) -
Investigation
(2) -
iOS
(1) -
IPS and IDS
(6,580) -
IPS and IDS1
(1) -
IPS-IDS
(1) -
IPSEC
(1) -
IPv6 Configuration
(1) -
ISE
(1) -
LAN Switching
(7) -
License
(324) -
MPLS
(1) -
Multicloud Defense
(3) -
Network Management
(93) -
Network Security
(2) -
Networking
(1) -
NFVIS
(1) -
NGFW Firewalls
(37,594) -
NGIPS
(1,874) -
Online Tools and Resources
(1) -
Optical Networking
(3) -
Optics
(1) -
Other Collaboration Topics
(1) -
Other Community Feedback
(4) -
Other Firewalls
(1) -
Other NAC
(18) -
Other Network
(2) -
Other Network Security Topics
(10,792) -
Other Networking
(9) -
Other Routers
(9) -
Other Routing
(24) -
Other Routing and Switching topics
(2) -
Other Security
(1) -
Other Security Topics
(18) -
Other Switches
(12) -
Other Switching
(4) -
Other VPN Topics
(1) -
Passive Identity
(1) -
Physical Security
(21) -
Policy and Access
(2) -
Prioritization
(3) -
Remote Access
(2) -
Room Endpoints
(1) -
Routing Protocols
(9) -
SD-WAN Security
(1) -
Secure Network Analytics
(1) -
Security
(4) -
Security Management
(645) -
Segmentation
(3) -
Service Providers
(1) -
Small Business Routers
(5) -
Small Business Security
(2) -
Sourcefire
(2) -
Support
(2) -
Threat Containment
(6) -
Threat Defense
(1) -
Threat Grid
(1) -
Unified Computing System (UCS)
(1) -
Voice Gateways
(1) -
VPN
(28) -
VPN and AnyConnect
(1) -
Vulnerability Management
(46) -
WAN
(8) -
Web Security
(5) -
Webex Teams
(1) -
Wired
(3) -
Wireless Security
(1)
- « Previous
- Next »
Forum Posts
Resolved! can't SSH to inside interface on ASA
Hi thereI have generated the key and can ssh to outside interface. I have allowed access on inside interface. I can telnet but not ssh. I captured packets and can see incoming only. Any ideas?TIASent from Cisco Technical Support iPhone App
Hi guys,I'm stuck on a particular issue, I can see this in SYSLOG:Deny TCP (no connection) from 192.168.112.x./x to 192.168.115.x/x flags SYN ACK on interface insideTeardown TCP connection 7844974 for fw-mgmt:192.168.115.x/x to inside:192.168.112.x/...
I have a ASA 5510 with Security Plus License and when I looked at the devices a few days ago I had 2 contexts, however after configuring the Mgm port as a regular port the contexts show 0, why? I can not find any post on the internet where this issu...
Hi All we have two fireawalls configured in active/active mode with two context.All the interface of two contexts are shared.How can i change the mode of failover from active/active to active/standby with minimum disruptionThanks in advance
Hi guys,We are encountering several problems with regards to the NAC Agent. We are deploying AD SSO and for some reason, on the same switch other hosts are performing SSO correctly and others are being prompted for a user name and password by the NAC...
Hello!After upgrade to 9.0.1 from 8.4 I have problems with reverse dns resolving, like this:named[2679]: DNS format error from 193.0.9.1#53 resolving 82.64/27.195.26.72.in-addr.arpa/PTR for client 127.0.0.1#37124: question section mismatch: got 90.64...
I don't want over the air WPA OR WPA2 security on my model Valet M10. I have gone through all the choices and did not see a way to disable security. I am way out in the country and there is no one near that could use my wifi and do not want to enter ...
Resolved! ASA VPN ports
Hi ,i want to able users to conecte to cisco asa 5510 behind a cisco router 1841, what is ports that i have to open for.thinks
Hi everybody,Please I need the part number of the software license for IPS-4255-K9.brkuku
Here is the config.Problem is they cannot get to the internet. All internal networks are functional. HELP!Result of the command: "sho run": Saved:ASA Version 8.4(1) !hostname *******************domain-name *************************enable password ***...
Hello.I would like to know whether CSM 4.3 is compatible with ASA version 9.1(1). Can anyone direct me to an appropriate url that contains information about these two version's compatibility?Thanks.
Running on ASA Version 8.2(5) I have the config like this:INTERNAL 192.168.0.0/24 vlan 1GUEST 10.10.10.0/24 vlan 5OUTSIDE internet ip (95.97.88.229) vlan 3internal network has own dns and DHCP server and hosts a exch...
Hi all;After reading through many forum articles about nat and reverse dns on the asa product, and testing different configurations we are still faced with the problem that our ASA sends outbound mail on the global NAT ip address rather than its Stat...
Resolved! ACLs on Inside interface
Hello I am new to firewalling and the ASA5510. I have inherited the management of a firewall. I have a quick question with regards to best practice. I have attached a screen shot of the rules configured for the inside interface on our ASA5510. Inside...
Learn, share, save
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide
Unanswered Topics
| Subject | Author | Posted |
|---|---|---|
| 06-24-2026 08:00 AM | ||
| 05-26-2026 07:54 AM | ||
| 05-02-2026 06:09 AM | ||
| 04-30-2026 12:46 AM | ||
| 04-24-2026 07:04 AM |
New solutions
Top Solution Authors
| User | Count |
|---|---|
| 3 | |
| 1 | |
| 1 | |
| 1 | |
| 1 |
