Network Security

Hi, I am using the ASDM to look through the rules. I have inside rules and outside rules and DMZ rules. For example at the bottom of the rules for the inside list should I have a deny any any as all the rules above this will still work?

i have configure IM messenger block by mudular Plocy framework according to cisco technotes but yahoo messneger still work with firewall with no proxy option what should i do ???

Dear allI've two leased lines(currently one active)both the links terminate to the ASA 5520.I've configured 11 vlans in LAN.now my question is.as the netwrok is running smoothly with only one link active.I got another leased line.1. I need to make b...

We have setup ASA as VPN server. We can establish the VPN, but can't access any remote computers. The configuration can be found here: http://www.howtonetworking.com/vista/vistavpn.htm

I upgraded LMS 2.4 to LMS 2.6 few months ago and recently I addedtwo new 3750E switch with required SNMP configuration in the switches.The two new 3750E act as VTP domain server. The problem which I am facing currently are....LMS 2.6 can't able to ca...

I have an ASA 5505 Security Plus appliance.The problem that I am having is denying incoming access to host inside my network.Below is my current access list.access-list inbound extended permit tcp any host Exchange01_Outside eq smtp access-list inbou...

Hi Guys.I have the following problem,When the call desk receives calls and wants to transfer those call, the telephone resets itself, and gives the following error “Call Control Failure”. Note: This does not happen all the time.The voice guys hav...

Hi All, pardon me if this question is too easy for the firewall gurus out there. I need to integrate a second firewall for redundancy in my production environment to separate a customer network. All I know is the virtual IP for the pair of customer g...

Hi,My configuration I have 2 asa 5510 as A/P failover.In "top 10 access rules" I have a rule with a blank interface and src =any dest =any service =http action =permitWith right click I have no information. I don't know where I use this rule and is...

I am trying to automate the configuration of PIX501 (currently running 6.3). My goal is to have a tech pull a PIX out of the box and enter the Serial Number and MAC address into a database. At that point a DHCP reservation is made for the MAC addre...

hione of our websites was hacked, the attacker used weakness in the scripting, what he did was added to the address "http://www.xxx.com/details.asp?id=xxx+update+textnews+..." and by this he changed the main page.My question is why the IPS did not de...

HiWe have three VLAN's which are carried into a 3560. What we want is to be able to monitor these VLAN's with a single interface on a 4255 that runs as a passive device. I also want this device to be able to send tcp reset's from another interface on...

Simple nat statemtnes nat (dmz) 1 192.168.1.1 255.255.255.0global (outside) 1 200.15.1.10-200.15.1.20If it only xlates when the IPSEC tunnel is up then how do I get it to work when I bring down the tunnel or have traffic that doesn't use the tunnel?