Network Security

I remember quite some time ago hearing that spam mail on an infected internal system can use any port to send mail out.  What I would like to setup is a set of firewall rules to only allow certain packets out through their correct ports, such as DNS ...

Hello All,Gurus,out there please help me understand how do i update the SSL certificate on cisco NAC appliance (clean access mananger/clean access server).how to check when is the certificate being expired.thanks in advance.

Hi,We have a ips 4270 which reports a lot of threats with source and dest 0.0.0.0. Why is that, can't it solve these addresses? Example:Receive Time          Severity          Event Type ID          Event Name          Device          Source         ...

I am trying to export the rules into a .csv or text file for a presentation, is there a way to do this?thanks in advance

I am using a Cisco ASA 5505 for the direct internet access link at one of my sites.Is it possible to set up an email alert when a particular interface's traffic goes over a certain bandwidth?Thanks for reading.

Hi all,I'm testing the Cisco IOS Resilient ConfigurationFirst I perform a command "secure boot-config" After i want simulate a hacking action and I make some permanet changes to config-startup from telnet. Where and when i can see the mismatch messag...

Hey all,Quick question.In terms of configuring the IPS, what's the difference in the experience using the CSM vs. the IME? I have a PC running IME here at office but I'm having issues installing the CSM so I haven't been able to try it out. I am, how...

ASA operating as single context & Active/Standby mode.ASA os upgraded to 8.3(2) recently.whenever replicate the configuration of active unit to standby, the interface of the standby unit is down, and up (flap).i think that it's happened, while standb...

Hi I have a problem,I want to change the source vlan for a SPAN monitor session. The issue is I don´t want to logon at every switch to change the source manually, because we change the source  many-times daily, we want to automatize the process as fa...

Hi, All!     I have a Cisco ASA 5505 that I have configured.  The outside interface is vlan 2 and the inside interface is vlan 1.  Port 0 of the ASA is configured to be in vlan 2 and is connected to the ISP provided subnet.  Port 1 is connected to my...

Hi,Is it possible to use a acl of ip addresses (phishing websites/hosts list) so that I can redirect this traffic to a internal webserver? On this webserver I explain why the user must not klick on links in mails etc.Regards,  Marc