Network Security

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Cisco CyberSecurity


Forum Posts

Hi all!I'm having some troubles with NAT, packets does not match nat rule (that i think it should) and is not choosing the right egress interface. So crypto map never startsthis is the relevant config:interface Port-channel2.4 description Public TESA...

Hi all,i'd like to ask you question about NAT.i've got a asa with inside and outside interface and some dmz and i want to nat ip dst to but i wanna also to reach real ip this rule it works, do you think is right?object n...

I've got an ASA running 8.4I'm trying to get a simple ACL to work, but I'm failing miserably. The core guts of my config are:interface GigabitEthernet0/0 nameif LAN_1 security-level 100 ip address GigabitEthernet0/2 ...

I have an ASA-5510 in a location that loses connectivity to the wan gateway after anywhere from five to fifteen minutes.  At first I thought that the unit might be defective, but I replaced it with an ASA-5505 with similar results.  A reload of the A...

clarke by Beginner
  • 1 replies
  • 0 Helpful votes

Hi,We are planning to upgrade IOS on a 5520 pair, from 7.2.4 to 8.2.4, and cause minimum outage. And according to the documentation, we can do the zero downtime IOS upgrade by failing over to the standby ASA and back.

pgera2010 by Beginner
  • 2 replies
  • 0 Helpful votes

We have 2 separate ISP connections with 2 separate routers, during a recent router outage we found that our PIX firewall was not routing to the second default route that I have in the pix configuration.  Doing some searches on CCO, I have seen some d...

NPT_2 by Explorer
  • 2 replies
  • 0 Helpful votes

I have a Windows 2003 server running a L2TP VPN server on it. I'm putting theASA5505 in replacement of an opensource firewall.My question is that, I can't seem to forward the ports correctly for L2TP to the internal address of the 2k3 VPN server. It ...

Hello Experts,We're looking for a DDOS mitigation appliance to protect our production servers from any of such attacks. I've come across Cisco Guard DDoS Mitigation Appliances XT 5650 and 560-B:

Ehsan M. by Beginner
  • 1 replies
  • 0 Helpful votes

Hello.Recently, I've been having significant problems with denial of service on our ASA-5510. Two IP addresses in particular attack my ASA regularly. What kind of rule do I need to create to deny these IP's access to my firewall?Thanks!Sent from Cisc...

SamMooreIT by Beginner
  • 4 replies
  • 0 Helpful votes
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