Were trying to use our polycom VC through our ASA 5510 but everytime someone calls in we see a Deny Outside_in destination port 1720 tcp in the syslog.It doesnt make sense as we have all the following ports open on the outside interface (H323 coloum)...
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
(2) -
APIs
(1) -
Appliances
(17) -
ASA
(1) -
Branch Router
(1) -
Buying Recommendation
(81) -
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)
(9,339) -
Cisco Bugs
(65) -
Cisco Cafe
(15) -
Cisco CLI Analyzer
(1) -
Cisco Cloud Services Router
(1) -
Cisco Defense Orchestrator (CDO)
(140) -
Cisco Firepower Device Manager (FDM)
(768) -
Cisco Firepower Management Center (FMC)
(2,700) -
Cisco Firepower Threat Defense (FTD)
(2,986) -
Cisco Press Cafe
(1) -
Cisco Secure Firewall Device Management (FDM)
(57) -
Cisco Secure Firewall Management Center (FMC)
(288) -
Cisco Secure Firewall Threat Defense (FTD)
(343) -
Cisco Security Cloud Control
(17) -
Cisco Security Manager (CSM)
(3) -
Cisco Software
(20) -
CISCO START ANZ
(1) -
Cisco Threat Response
(1) -
Cisco Vulnerability Management
(45) -
Cloud
(1) -
Cloud Provisioning
(1) -
Cloud Security
(2) -
Community Bug or Issue
(1) -
Community Feedback Forum
(26) -
Community Ideas
(12) -
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
(15) -
EEM Scripting
(1) -
Emergency Responder
(1) -
Endpoint Security
(6) -
Enterprise Agreement
(1) -
Event Analysis
(238) -
FirePOWER
(1) -
Firepower Chassis Manager (FCM)
(2) -
Firepower Device Manager (FDM)
(14) -
Firepower Management Center (FMC)
(383) -
Firepower Threat Defense (FTD)
(206) -
Firewall Migration Manager (FMM)
(1) -
Firewall Migration Tool (FMT)
(39) -
Firewalls
(1,051) -
FMC
(1) -
General
(2) -
Guest
(1) -
Identity Services Engine (ISE)
(8) -
IE3300
(1) -
Integrated Security
(8) -
Integrated Security Architecture
(1) -
Integrations
(4) -
Investigation
(2) -
iOS
(1) -
IPS and IDS
(6,519) -
IPS and IDS1
(1) -
IPS-IDS
(1) -
IPSEC
(1) -
IPv6 Configuration
(1) -
ISE
(1) -
LAN Switching
(6) -
License
(307) -
MPLS
(1) -
Multicloud Defense
(2) -
Network Management
(87) -
Network Security
(2) -
NFVIS
(1) -
NGFW Firewalls
(37,235) -
NGIPS
(1,794) -
Online Tools and Resources
(1) -
Optical Networking
(3) -
Optics
(1) -
Other Collaboration Topics
(1) -
Other Community Feedback
(3) -
Other Firewalls
(1) -
Other NAC
(18) -
Other Network
(3) -
Other Network Security Topics
(10,663) -
Other Networking
(9) -
Other Routers
(8) -
Other Routing
(22) -
Other Routing and Switching topics
(2) -
Other Security
(1) -
Other Security Topics
(18) -
Other Switches
(12) -
Other Switching
(4) -
Physical Security
(19) -
Policy and Access
(2) -
Prioritization
(3) -
Remote Access
(1) -
Room Endpoints
(1) -
Routing Protocols
(8) -
SD-WAN Security
(1) -
Security
(5) -
Security Management
(566) -
Segmentation
(3) -
Service Providers
(1) -
Small Business Routers
(5) -
Small Business Security
(2) -
Sourcefire
(2) -
Support
(3) -
Threat Containment
(6) -
Threat Grid
(1) -
Unified Computing System (UCS)
(1) -
Voice Gateways
(1) -
VPN
(27) -
VPN and AnyConnect
(1) -
Vulnerability Management
(43) -
WAN
(7) -
Web Security
(4) -
Webex Teams
(1) -
Wired
(4) -
Wireless Security
(1)
- « Previous
- Next »
Forum Posts
I would like to create exceptions within particular signatures to ignore IP addresses. How do I perform this task?
Hello,I have just setup a new ASA 5520 with 8.3 OS. I have it setup very basic with 3 interfaces; outside, inside, and management. I have it setup so any users on the inside can get to the internet on the "outside" with Dynamic NAT. However I a...
(Addresses are made up)I have a Multicast server (1.1.1.1) that is multicasting out on address 224.1.1.1 on an interface called CLAN . I need this mutilcast to be routed out of the inside interface to a client on the internal network.The mroute comm...
Resolved! Upgrade NAC from 4.5 to 4.8
Hello everyoneI am about to upgrade a NAC from 4.5 to 4.8 on an implementation that I make in a bank with 1500 users. The upgrade is due because the bank is migrating from PCs to Windows 7The implementation is in Failover (2) CAS and (2) CAM. the des...
I would be cool to see a repository of custom IPS signatures end users have created and want to share with the community.Such as how Cisco does with EEM scripts...
Does any one know what constitutes acceptable password characters on version 7.0(4)E4 of the IPS Software?I'm in the process on testing the sensors with RADIUS authentication against ACS version 4.2. ACS backs of toMicrosoft AD for accounts and passw...
Hi All,In our client organization we are going to migrate the new firewall with existing setup. Here, In the existing setup they are having Pix 525 and the new firewall is ASA (Pix is the end of the sales now). As per my understanding we cannot buil...
Hi, I have been reading several discussions on here about why the use of the MGMT interface isn't recommended for Failover, but I haven't seen a good enough reason why that is the case. Please give me some details and facts why this is a bad idea.I ...
Hi guys,I've got 2 routers, one is a 878 with an IOS lvl 12.4(15)T4 RE and second is a 1760 with an IOS lvl 12.3(6b).Even if Cisco documents are tellin me both device is supporting Net Flow, i got troubles implementing it in my system.I got a doubt a...
Shared Web Layer firewall - what is this? Is this another name for an application layer firewall filtering web traffic? We are tasked with deploying a cisco ASA 5520 as a shared web firewall. does anyone have any documentation on how this is accompli...
Resolved! Zone Based Firewall and Invalid SRC
Hi folks,Just a quick question for you ZBF guru's. I generally manually configure routers and skip CCP express, etc. I noticed from a default CCP config it applies a class for invalid src addresses which is defined as drop, log. class-map type inspec...
Resolved! Limit connection per user on FWSM
Hi there,I'm trying to configure the FWSM to limit the number of tcp connections per user. I can only find a configuration which limits the entire ip subnet. Is there a similar command or a way to mimick the command on the ASA, "set connection per...
I have a PIX 501 and I have a bunch general licensing questions about this device, and I don't have any prior experience with licensing on Cisco devices, so please be patient:It comes with a basic license, but for any encryption related things, the p...
Sometime shortly after deploying my ASA 5510, I was forced to remove the default global inspection policy in order to sort out an issue with TLS over SMTP. Today, I'm having problems accessing external hosts with FTP, even in passive mode. As an ex...
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 |
|---|---|---|
| 11-10-2026 12:34 PM | ||
| 11-06-2026 12:20 AM | ||
| 09-22-2026 04:13 PM | ||
| 08-25-2026 06:22 PM | ||
| 08-24-2026 12:26 AM |
New solutions
Top Solution Authors
| User | Count |
|---|---|
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 1 |
