Network Security

Installed a new Nexus 9k core and ASA 5525-X today and wasn't able to SSH from the Nexus to the ASA. We get the following error: nex9k-01# ssh 10.x.x.x <-- Inside interface of ASAUnable to negotiate with 10.x.x.x port 22: no matching key exchange met...

Hello, I am installing a new firepower 2120 NGFW and none of the interface get a link apart from the management interface.  Has anyone encountered this? I have the interface enabled in the FMC and I have tried reloading the system but still I get no...

I have Sourcefire 7030 sensor in my deployment that someone accidentally cut the power cable to with a punch-down. I know these machines are going EOL soon but we need it up for the time being. I would pull the model number off of the brick but the g...

I am struggling to get FirePower communicating within 5508-X active/standby pair.  From the documentation, I am showing I should have the "inside" interface as well as the management 1/1 both within the same internal network.  I have connected (insid...

Hi  currently IP base ACLs are configured on ASA 5525X for office365. i want to configure FQDN base ACL for office365. can someone tell me what are the drawbacks if i configure with FQDN instead of IP base ACL ? regards

Hi Team,   we are using ASA 5545-K9 model in DC environment . shall anyone provide feasible code for this model , whether i use 9.8 or below on that 

Hi all. kindly please advise, we doing a firewall project where we are bringing in 5555-X with firepower module. we wanted the SSL encrytion/decryption. but our supplier advise this is not a good idea. better to leave this as it will degrade the perf...

Hi there I'm looking at a strange issue with a ASA, there is a site to site VPN and an any connect vpn. The asa is on site 1 where the anyconnect vpn connects, on that site is a domain controller. Site B is an external vpn site to site which connec...

Hi Everyone, Would anyone like to enlighten me about this latest SKU from Cisco? My SC is on holidays :) I've just ordered it from CCW along with: FPR2110-ASA-K9 Cisco Firepower 2110 ASA Appliance, 1U CON-3SNT-FPR2110S SNTC-8X5XNBD Cisco Firep...

Hi everyone, I have two ASA5512-X on which I like to configure HA. When I activate Failover on the standby unit I get the following error message: Detected an Active mateMate NOT PRESENT card in slot 2 is different from mine CXSC5512 I guess this i...