Network Security

Hello,  I would like to block some public IP addresses in the FMC in a manual way. When I see it in the events I have the option to select to blacklist it.When I go to that blacklist I cannot add manually.  Which is the best way to block a public IP?...

Hello,I am working on a system which needs to configure the date & time of a Cisco Catalyst 9300 Switch.We cannot use NTP protocol to do so. Therefore, this configuration needs to be performed automatically by the system thanks to ssh connection. I w...

Hello! Can't update firepower 6.2.3.16 for some time.Error messages is  " Download updates failed: Update file is corrupted "I do not use proxy, and I have 3 devices , all have the same problem.Any ideas how to fix this? Thank you!

Hi allI'm experimenting with an FTD in Azure where I'm trying to allow VPN services through the FTD to a server behind the FTD. I should be a basic NAT setup where I allow the VPN services (PPTP and L2TP) from the public IP of the FTD to be passed an...

Hi All, I had issue that the primary device was dead as the module died. hardware was replaced everything is fine, i manged to configure it. It replicated well. Primary device is active, secondary device is active as it should be. but now cant login ...

Hello,I have a problem with the Cisco ASA 5506-X. I cannot connect to the device via the mini USB cable. When PuTTy starts, the console shows a blank black screen. It does not respond to any commands. The Power light is green, the status light flashe...

Hi, thereI have a Cisco 5585-X. one of the context is configured with transparent mode. OSPF is used for routing between the two layer 3 devices on the inside and outside the interface respectively. However the hit count for OSPF shows 0. Could someo...

Hi Guys,Anyone here experienced this issue that it cannot boot up the security module. My error states that /dev/sda missing or inoperable.I tried to upgrade and downgrade my FXOS but still the same issue.Thank you.

Hello, I am planning to do a complete reimage of a firepower 2110 and this include halting the boot process and enter ROMMONOn the ASA with FTD, this requires a boot image file for the initial (bootstrap) setup, but I am not able to find a boot image...

I have been writing some scripts for FXOS installation.  I have them done, but can't figure out a character if one exists that tells the OS to ignore the rest of the line (comment lines).  In ASA or IOS it is the "!" and in Linux it is the "#".  Or m...

Does the NCS 520 support NAT? 

Hi,  I have tried to find information about licensing on new N520 with no success.Could someone clarify which ports are enabled by default and what is the difference between Metro Access and IP Access tech packages? Thanks in advance

Hi all, i have on FMC the snmp configuration i add all the info like read community listen port 161 trap port 162 and the hosts, everything is ok we see all the traps but i dont see any interface on our monitoring tool, have someone an idea? the FTDs...

We have been assigned a new routed IP subnet by our ISP in addition to the exiting one. This /29 subnet needs to be added to the FirePower appliance so we can then use it for additional NATs to be defined.I cant find any documentation on this and don...