Network Security

How can I release DHCP on external interface? It has obtained an IP from ISP that they have decided don't want me to have, so have to release address so can obtain a new IP. I keep getting the same IP back.

In my network there are different model of Cisco routers installed, In my NMS Monitoring system I am able to observed SNMP trap from all the routers except all Model apart from 7000 series. but checked snmp configuration is almost right, what can be ...

HiMy PIX 515E is not booting. It gets stuck. Below is the display after which it gets stuck. Pls help if it's a know issue to anyone.CISCO SYSTEMS PIX FIREWALLEmbedded BIOS Version 4.3.207 01/02/02 16:12:22.73Compiled by morlee32 MB RAMPCI Device Tab...

Hi netpros,Is there any way to configure the IPS module on an ASA firewall to only generate alerts (first phase of deployment). I am not sure about whether setting the 'event overwrite' option to 'Alert' and setting the RR to 0-100 will do the trick....

can any one explain me about Cleanup & stealth rule of ASA F/W.Kindly advice how to configure it..!

I am going to be rolling out some blades to our 6500's. I have done a lot of research but I figured I might as well ping the experienced guys on this one. What considerations should I make before just slapping these things in? For example, what amoun...

I have two redundant ASA5520s and am planning to add a 3350 as the DMZ switch. I am looking for advice on the best way to accomplish this (best practice)

I have a 506E Pix running version 6.3(5) and trying to run the traceroute command but it is not availble, why?

I use a 2821 IOSFW for internet accessIt holds 14 DMZ (one Vlan / server on each)and about 2000 internal internet daily users.My internet access is 10Mbps symetric.When trafic grows, CPU grows correspondingly to IP trafic, up to 50%.I suppose that CP...

I m not able to configure the SSL VPN on cisco vpn concentrator with verion 4.x. I am not able to access the vpn concentrator via public interface. dont know what i m missing. I have enable the http/https access on public interface but still not able...

I've got a pair of PIX 525 in an active/standby configuration. I recently made some fairly large configuration changes to the active pix. Ever since then, I'm getting some errors when writing the config to the standby unit. The error looks something ...

I have cisco 38xx series with ios 12.4(2)T6I am trying to block specific extension and specific url so that users cant access/download.I did the following configuration but only youtube is not working rest all downloading and url are working fine.cla...

How can I view all live traffic coming from a specific IP? I have a L2L tunnel setup and a few IP's on one subnet are not pingable. Trying to find out where it is dying.

I have a few 5505s running L2L to a 5520. At all of the locations where i have 5505s there is just one PC. I have disabled DHCP, static IP on the PC, and disabled unused ports. This is to prevent people from bringing laptops from home. Well there is ...