Consistently I see similar errors like this in my logs. The src address is actually my SCCM server (policy server) and the dst address is a remote VPN user who connects with the AnyConnect client.%ASA-4-419002: Duplicate TCP SYN from inside:10.2.152....
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)
(9,621) -
Cisco Bugs
(54) -
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)
(40) -
Cisco Secure Firewall Management Center (FMC)
(226) -
Cisco Secure Firewall Threat Defense (FTD)
(276) -
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
(6,579) -
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
(37,590) -
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
(10,790) -
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
(644) -
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
Hi All,A customer want to replace his old Microsoft ISA firewall with another device.I thought of a redundant Cisco ASA pair. The new firewall has to meet the following requirement:The new Firewall has to validate SSL client-certificates against Micr...
Hi Guys,I got a problem where my HQ(private IP)unable to ping and access server with ip 10.45.x.42 reside at my branch.Both HQ and my Branch using private IP.My LAN using 2 IP Range. LAN FW Exinda ...
Hi I previously had a NEXXT Acrux 300 wireless router and with this device I could configure a specific ip address to be given a host based on its mac address and then i was able to configure a specific amount of bandwith limit in KB to that ip add...
Hi all,I am really getting confused and have read lots of article and still don't fully get the queues on asa.I know asa can support standard priority and hierarchical but here is what i don't understandwhy can I not police priority queue? for instan...
HelloNetwork topopogy in our organization is a followingAll server connect to Cisco 3845 main router. All servers have unical ip address from different subnets.We wish configure Cisco 2901 router as IPS and connect to Cisco 3845.Please say how can w...
Resolved! TFTP port number not 69
we have a pair of ASA that are on the Zone1(x.x.33.100), and we have TFTP server(x.x.223.108) on the Inside Zone. Zones are seperated by a Checkpoint FW. When I generate a tftp traffic to copy running config to the tftp server from the ASAs, the Chec...
I noticed what appears to be a bug with Access-Lists when using Static Port Translations. Below are the steps to recreate. Was wondering if anyone else has experienced this, or had an idea what was going on. If not, I'll use the forums feature to ...
Resolved! Installing License on CSM 4.3
Hi Everyone,I am installing CSM 4.3 on new Server.During installation it asking for License Location.I have only 2 CDs that came with CSM.Where should i look for license of CSM 4.3?RegardsMAhesh
Hello,I Have a problem here.Some times the connection from one ip "out of the firewall" to an ip behind a firewall stops, when it occurs, i send the commands "clear conn origin ip address" and clear xlate "origin ip address", after that, the communic...
Hi All,I have cisco asa 5520 with IPS module ssm 20I want to create a custom-signature in moduleAny document which can help me
I am trying to have my IPS (7.2) access my ASA 9.1.2. I am getting an error. I haven't been able to find the exact problem nor any solutions.ASA configssh timeout 5ssh version 2ssh key-exchange group dh-group14-sha1ASA debugDevice ssh opened succes...
Resolved! Source NAT on ASA 9.1
Hi guys,I'm trying to configure NAT on an ASA in the folowing way:IN 192.168.1.1:443 <- 172.16.1.1:443 OUT - static PATIN 192.168.1.13:25 <- 172.16.1.1:25 OUT - static PATIN 192.168.1.1, 1.13 -> 172.16.1.1 OUTIN 192.168.1.0/24 -> 172.16.1.2 OUT - dyn...
Resolved! Reset of connection
Hi I captured attempt (telnet 10.197.10.19 8888) from 10.123.14.24 of connection on outside interface of ASA2 packets captured 1: 13:35:59.051358 10.123.14.24.37199 > 10.197.10.19.8888: S 920768158:920768158(0) win 49640 <mss 1380,nop,wscale 0,nop...
Hi,I config my pix 500 for publish my local server on internet with static nat (static (inside,outside)) but when request my web server from external ,server security log take pix inside ip address instead of original source public ip.please help me ...
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 |
|---|---|---|
| 05-05-2026 09:59 AM | ||
| 05-02-2026 06:09 AM | ||
| 04-30-2026 12:46 AM | ||
| 04-24-2026 07:04 AM | ||
| 04-22-2026 11:56 AM |
New solutions
Top Solution Authors
| User | Count |
|---|---|
| 3 | |
| 3 | |
| 1 | |
| 1 | |
| 1 |
