My customer has a 5510 with the inside interface connected to a routed port on a Cat3560GWhen I look at the arp cache on the 5510 all inside IPs have the MAC of the 3560's routed portPartial output:asa# sho arp inside 172.20.1.138 0024.1397.f8...
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
(10) -
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)
(9,631) -
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)
(3,164) -
Cisco Press Cafe
(1) -
Cisco Secure Firewall Device Management (FDM)
(47) -
Cisco Secure Firewall Management Center (FMC)
(245) -
Cisco Secure Firewall Threat Defense (FTD)
(296) -
Cisco Security Cloud Control
(16) -
Cisco Security Manager (CSM)
(3) -
Cisco Software
(20) -
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
(32) -
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
(94) -
Network Security
(2) -
Networking
(1) -
NFVIS
(1) -
NGFW Firewalls
(37,594) -
NGIPS
(1,874) -
Online Tools and Resources
(1) -
Open Source and Open Standards
(1) -
Optical Networking
(3) -
Optics
(1) -
Other Automation Analytics Topics
(1) -
Other Collaboration Topics
(1) -
Other Community Feedback
(5) -
Other Firewalls
(1) -
Other IP Telephony
(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
(29) -
VPN and AnyConnect
(1) -
Vulnerability Management
(46) -
WAN
(8) -
Web Security
(5) -
Webex Teams
(1) -
Wired
(3) -
Wireless Security
(1)
- « Previous
- Next »
Forum Posts
HiCan anyone tell me if can you log on to the firewall with the enable_15 account remotely via a Cisco IPSec VPN client?Similarly, how do you restrict access to the ADSM to the local LAN for the enable_15 account?Is there a way to tell when a user la...
I am hoping this is a simple thing I am missing. Here is my scenario: We want to allow customers to send and receive FTP files to us.For my testing I am accessing the FTP server from my house:With the configuration below I am able to use WinSCP to c...
My cisco representative tells me that I am limited to 10 IP addresses for my 10 user license on an ASA 5505 even though the Cisco documentation specifically states that a 10 user license allows the maximum DHCP clients to 32 IP addresses.I want to ha...
Hi guys, Is there a way to tune a host from inspected by the ASA CSC URL filtering rules? For example we are inspecting the 172.16.0.0/16 network, however there is one host that needs to be excluded from the inspection/blocking. I tried adding "denie...
Hi All, One of our ASAs seems to be dropping DNS traffic. The users behind it complain that DNS seems to be blocked by the firewall. The inspect config is the following: policy-map type inspect dns preset_dns_map parameters message-length maximum 20...
How can I find the serial number at Cisco PIX-515E ?
Resolved! ACL config guidance
we are looking at having a 172.168.40.0 network on our LAN. BUT i want to tie it down to JUST accessing the internet!So i'm looking for some ideas on how that ACL would look like.i have an ASA 5510 as our firewall and i've attached a simple network d...
Hi AllHow to view the commands that someone changed the configurations in ASA 5520? Thanks.
Hi guys:I got a problem with a cisco asa 5580 like two days ago and the device stop working (there was a mainteinance window and after that the device didn't work). Now we receive the RMA and we are trying to configure the failover so the new device ...
Hi,Just wondering if anyone has can help...I can ping my to NAC Managers but cannot HTTPS into them. I get the "The page cannot be displayed message in IE." I used to be able to HTTPS into them but not anymore. I cannot think of anything that has cha...
Resolved! How do I port Forward on Cisco 871
This is a simple questionm but I always seem to have problems when trying to configure port forwarding on cisco routers. I've even tried the instructions I have for a cisco 1811, but no luck. I have a cisco 871 and a computer that has VNC installed o...
Inside, outside, and two discrete DMZs. Inside 100, outside 0, DMZ1 50, DMZ2 40. DMZ1 -> 192.168.7.0/24. DMZ2 -> 192.168.8.0/24.Wireless APs on DMZ2 - using public DNS, want to hit FTP server on DMZ1 with public address:nat (DMZ2,DMZ1) source static ...
I am in process of implementing an IPS in our network. IPS will be located behind the ASA firewall. For example Edge router/switch > IPS firewall > ASA firewall > Entry/Exit router . We are going to have a hardware bypass switch for the IPS...
Resolved! IPS 4270 monitoring configuration issue
Hi All, I have installed new IPS 4270 in our Data Center. It is working with default signature configuration.Now I want to monitor all the traffic which are going and coming via IPS. So can anyone tel me the tool name and how to configure it, by wh...
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 |
