Network Security

The signature for syn flood DOS (6009) has two values that I can see will alter the signature threshold.event-counter ----------------------------------------------- event-count: 2600 default: 200 event-count-key: AxBx <defaulted> specify-alert-inter...

I have a weird situation that I could use some help with.I have a customer that is using an RFC 1918 range internally. One the remote end of an IPSEC VPN a vendor is using in part some of the same block. I need to be able to NAT two system to new add...

Is there a way to move a 3des license file from one pix to another? We just installed updated pix at one of our locations, but it did not have the ability to use 3des. I am wondering sense we purchased this 3des license for the older pix if I can som...

We have some VPN 3000 concentrators in our network. We use "cacti", a variant of the MRTG tool to graph various things. Amongst them, we also graph circuit utilization of our Internet bandwidth.My routers and PIXs work fine in this regard. However, I...

We currently have a PIX 506e setup as our firewall. We have connectivity and everything is great except one thing. Basically we have a web server that has an internal ip address that we can access from the Intranet and an external ip address that we ...

I am currently running 2851 routers at my remote sites, with the IPS monitoring inbound and outbound traffic. When a user at my remote site tries to access certain links on our webpage (Works fine with IPS turned off) the page times out. If I continu...

1._ When i try to re-import a sensor (in order to have the same configuration) it is generates the following error message:Re-import StartedSensorConfigImport caught: The system exec did not complete within the given watchdog time(120 seconds)Re-impo...

HiWhen I run the "Startup/Running Out of sync" report, all my device are out of sync. I went in my router in CLI and I found that some lines of my code are not written the same way in my running-config that in my startup-config. This is why VMS deter...

We have ASA pair installed and connected to C4507 switches.Here the error log in my C4507R switch."*Aug 7 20:58:51.850: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 26 times)Packet received with invalid source MAC address (00:00:00:00:00:00) ...

Hi all,Last weekend we ran into an ACL problem on a PIX 501 (running OS 6.3(4)). A colleague of mine needed to add a rule to the ACL applied to the outside interface. He isn't used to handling a PIX, so he did what he normally does on a Cisco device,...

Hi,I'm very new to cisco equipment and was hoping someone could help me with this issue I have. I am trying to set up a VPN from a cisco 837 router that I have to another company, which I think is using a PIX. After some tweaking I managed to set the...

I am having a problem with a nat/pat on a 515.For smtp traffic coming in, I need to send the traffic to a Spam filter device, and the www traffic to the OWA box (inside the DMZ). When the mail goes out from the Exchange Server I need it to use a diff...

how can i bundle the mac and ip on pix? in my customer's network , most of the end user's ip address are not permitted to access internet , but others address have right . So many of them often change their ip address to authorizable address . I want...

AllI am now supect that the pix is under high volume of ping, as if i disable the ping from outside world on wan router, the performace of the network is improved.Does PIX can do with some control on if under icmp attack can temp limit or drop the pa...

Hello,I wanted to verify that IPsec traffic terminating on an ASA will be Inspected. I am trying to inspect all SSH traffic that traverses my ASA. The inspection should change the TCP timeout from the default value to 48 hours. I want to make sure th...