Network Security

We have VOIP phones and two of them have side cars with the extensions on them. The device allows us to see who is on the line and also to select an extension to call. We've found that the ASA is blocking the UDP sessions from the device after a cert...

Good afternoon all, I need to ping a very large amount of IPs and return the results in a readable format. What's the easiest way to do this? To give some scope... There's about 340 entries in the arp table, to which there's 400 or so statics set (no...

We're looking at exposing a service to the public interface, but want to lock it down to only specified MAC addresses and/or IPs being allowed to access it.  From what I understand from this thread - https://supportforums.cisco.com/discussion/1175409...

Got a shinny brand new ASA5506W.  ver. 9.4(1) ASDM 7.4(1) . First time working with them. ***Note to Cisco  - I'm disappointed that it is not clearly stated that the ports are not switch ports. With your marketing material it is very easy to assume t...

I have the FireSIGHT Management Center set up and I have a 90 day license for url filtering/malware.  I have registered the licenses on the FMC, and added a 5506 to the console.  But I can't seem to apply the available license to the 5506.  So I'm un...

Hello, I have an ASA firewall (a 5550) running in routed mode with three different IPs on it and it is doing fine.  Now people want to change the config to transparent mode, with two inside interfaces and one outside - so the two inside networks woul...

Dear ALL, I have an ASA 5520 with 60% CPU usage  related to dispatch unit.I am going to buy a new ASA.How can I compare  ASA models based on their dispatch unit processing capacity? ThanksAli 

Hello, I understand that "ip dhcp snooping" turns on the snooping capabilities and you have to trust a link for a dhcp.I just don't understand the ip dhcp snooping vlan ## command. can someone please explain this command.