Network Security

Hello We are in the process of migrating our datacenter switches to nexus family.  After swapping the old network devices with new nexus switch, the ASA FW seems to show below messages in the log,  %ASA-4-405001: Received ARP request collision from I...

I have a cisco ASA implemented on transparent mode, using subinterfaces and vlans the traffic pass through the cisco ASA is be working correctly. But I can't to do ping between different vlan only between host the same network or the same vlans.inter...

I was successful with config factory default and write mem.  I then gain access to ASDM.  However, If I reboot the 5505, I cannot regain access to the 5505 without doing another factory default reset.   I do not change any settings in the ASDM before...

Hi All, I have ASA5510 running with Software Version 8.3(2). There are two internet links - ISP1 and ISP2. I want to use ISP1 link for remote users to reach this ASA for Anyconnect SSL VPN access.And ISP2 link should be used for inside users to go ou...

Hi Friends,I have Cisco ASA 5545-x firewall.I have configured all the VLAN's in firewall.When We are trying connect the same VLAN server(any tcp or udp ports )the traffic coming to firewall and getting block.I have already enabled same-security infra...

Hi,I have a ASA 5500 running 9.X image. My Squid proxy is in same network. I would like to redirect my all web traffic (http and https) to Squid box. No idea how do I proceed with best practice ? please help. Thank you.ASA inside and Squid running in...

I am struggling here and not sure what I need to do but think it should be fairly straight forward.  I grew up on old IOS and IGS/MGS/CGS routers but have been out of the industry for quite some time so a lot of the new commands are foreign to me.  S...

I have access to an ASA 5505 over a VPN, it is connected to a switch, the port on the switch that is connected to the ASA is an access port, I made it into a trunk and got kicked off as expected, so on the firewall I made the port that connects to th...

Looking for confirmation!! From the Cisco document: CLI Book 1: Cisco ASA Series General Operations CLI Configuration Guide, 9.1found at URL: http://www.cisco.com/c/en/us/td/docs/security/asa/asa91/configuration/general/asa_91_general_config/intro_sw...

Hi Experts, This time for your advice on below point..1) Recently we were having a vulnerability assessment testing(through a tool) on  network and observation are :-"SSH Weak MAC Algorithms Enabled,SSH is configured to allow MD5 and 96-bit MAC algor...

Hello All, I need to allow traffic thru my ASA for expressway. Per the guide they want a range of TCP and UDP ports open into my DMZ from inside and outside. I thought I wrote this out correctly but, when I check it via packet tracer is says that my ...

Dear all, am having cisco ASA 5515-X IPS  with internal IPS.I did the initial config for ASA and session IPS too configuration (same network), but i can`t ping from the ASA to the embedded IPS. Do route needed or not?I need a resource for initial con...

Hi,Im connecting to my firewall through the console port, and need to know how to reset it to factory defaults. I have looked around online and can not see any reference on how to do this.Any help would be much appreciated thanks.