Network Security

Hello,I understand that DH is used to generate a symmetric key over a unsecure channel, it is needed to send algorithm over a unsecure channel. Below is my question:R1------Internet------R2 For eg R1 & R2 negotiate on pre-defined key 10.Then R1 gener...

Hi All,  I'm trying to find out what are differences between Security contexts (FPR2140) and Multi-instance(FPR4112), could you please help me to clarify why is Multi-instance better. I need around 20 "virtual firewalls". Also I need to know if PA-52...

Hi Experts, I have Mail Server in the Inside Network with an ASA 5506-X and LAN Router. Everything is working as expected, i want mail server be the only server to communicate on port 25 with outside network but when i tried to block computers inside...

So for the past couple of months we've been building an environment in Azure. With trial & error i've experienced that on the Cisco ASA's side, i need to specify the complete VNet address spaces (we are using 2 address spaces in 1 VNet) in 1 SA (mean...

Hello all,  I am attempting to connect an ASA to a cable modem via Cisco 1921 router. I connected the ASA to my network. G0/0 showed up/up on the router but did not see an IP address. G0/1 on the router is configured with nameif inside for the router...

Hello Guys, I set up the ikv2 VPN with pre sharekay and everything worked, this was done by just modifying the preshare key and placing a digital certificate. Without eembarog although the certificate is loaded and in order the vpn indicates errors f...

 Hello Folks, Has anyone experienced an issue where local user accounts are created in ASDM and then after a couple of ASA 5506 reboots, the locally administered user accounts suddenly disappear? This has has happened to me several times. I have ensu...

Hi, I have a Cisco 5508 ASA that one of my users needs to have access to Windows AD in order to test and put PCs on the windows domain remotely before being shipped out to location.I’m not very familiar with Windows AD. This user connects via remote ...

ASA version 9.6(4)20I tried to use "write erase" + "reload" to clear the configuration of ASA5515X. But after reload, all the configuration is still exist.Why? Regards,Wayne Wan

I've been trying to track down intermitent problems with one of our branch office ASA5505's .The way we have been tracking it is primarily through ping/icmp connectivity. Occasionily our tracking software will report that is stops responding to ping ...

Hello,I'm trying to stage an FTD appliance to replace an ASA with Firepower that is currently in production.  The FMC that controls it is also controlling an FTD HA pair.  What is the best way for me to stage the new FTD appliance without disrupting ...