Network Security

Hi,For phasing out a certain port - 143 - we decide to block the whole internet part by part as to effect a few customers at a time.How can I break the Internet IPs into like 5-6 parts and deny each at a time?Thanks,John,

Hi,I'm struggling with a piece of configuration in our data centre.  We are trying to deliver email synchronisation to iPhone/iPad clients using the Microsft ActiveSync protocol.In the data centre we use FWSM firewall running OS 4.1(3) and use CSM 4....

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We' re about to acquire IDSM-2 and wondering what seasoned idsm-2 admins have to share about it.So far, i've had comments ranging from complaints to quite satisfied admin experiences:-It's hard to make signatures tunings-Even when signature tunning h...

Hello. I,ve got license for AIM module from cisco.com using device manager. Then i've configured scheduler for signature updates, but update does not work.Could anyone guide me?Thank you.Sent from Cisco Technical Support iPhone App

Hi everybody,we recently upgraded our ASA 5510 active/standby cluster from ASA Version 8.3.2 to 8.4.1(11). Unfortenatelly the standby ASA is now crashing a few seconds after the configuration was syncronized from the active ASA.Also completly disabli...

Dear!I need help with following issue:My asa5505 frequency restart and creat a crash-infor file. I cant found what reason for this problem. Please help!Thanks in advanced,

How can I configure the Cisco 515E (version 6.3(4)) to be used with ADSL modem. Currently the compuerters are directly connected to the ADSL modem to get the priviate IP addresses and we would like to add the Cisco firewall after the ADSL modem. Any ...

Hi,We had implemented a Cisco ASA replacing a Sidewinder FW on our network. The Network has an ironport proxy even before which does HTTP connect (converting port 1-6553 to port 80). When we migrated from Sidewinder to ASA we made all the flow and po...

Hi All,Hope you can help. I have upgraded our ASA,s from 8.0(3) to 8.0(5.23) in our IPT environment ( we are currently running CUCM 6.1.5)  to address some vulnerabilities as per Cisco's recommendation.  Since the upgrade we have seen phones de-regis...

Hello,I have specified my corporate full IP subnet in internal zone, but i have not configured any TCP or UDP port for any destination also i have kept the default thresholds,Is it necessary to configure  destination port for the TCP and UDP protocol...

Got a strange issue with RME 4.3.1 where it timeouts if I try and deploy a compliance job to a group of more than about 1500 devices. I get right to the finish screen of the deploy job and then it sits there for ages and finally appears to timeout in...

I'm trying to route all default traffic from my production environment through my ASA 5520 on the "outside2" interface.The 5520 has a site to site VPN to our DR site on the "outside/inside" interfaces via one ISP. On another ISP, interfaces "outside2...