Network Security

My ASA 5505 has stopped giving out DHCP address to my machines.Everything was working fine and nothing has changed in the network. I've reloaded the firewall and clear all DHCP on the firewall I've even re-entered the cmd on the ASA. I'm able to stat...

Everyone,   A few months back, I was given the responsability of managing our firewalls. I know routing, switching, voip, unity but no security. Although the firewall management piece is outsourced, it takes time to implement something because our pa...

                   I have a asa5520-k8 with 7.2(4) that I found an NAT that was missing but before I can enter it I had run two commands below in order to enter it and I need to understand why if the xlate entry did not exist..  no alias (inside) 10....

Hi AllWe have to add some nating configuration to the ones that we already have.Actually we nat all the inside traffic from our ASA 5520 to the outside public IP.We recently add a new public IP network from our ISP.  We want to nat a specific inside ...

I would like to get some sort of IDS box for my lab to work on while I study.  Any recomendations? At my workplace we use SSM modules in our 5540's but we dont have nay in a lab environemnt and I really dont think they would appreciate me flipping sw...

I have been told that if an access list is created with the suffix _access_in, that if the preifx is the name of an interface, then that access list is automatically bound to that interface, even if there is no explicit command doing that.I looking a...

Hi,In my syslog server configured for Cisco PIX 6.3,I see lot of Built and teardown connections.Logic says if something is built then there should be a teardown.But I do not see teardowns for some connections even though I know that path is already b...

Hi there,I'm new to the ASA 5505 appliance and have a few very basic questions. Hope I get some responses and not flamed for being a total newbie. :-)Inbound versus outbound: I'm having a difficulty understanding the inbound versus outbound terminolo...

Hi @ all,hope you guys can help me. Did not found anything refering to this on the search.Situation: On a Customer Site we have a Cisco ASA5510 in routed mode, and we have 2 networks which are both routed fine.The Customer has one device+ on lets say...

                   Guys can someone plz tell me what is the difference between using subinterface and physical interface for example if i have four DMZ and i take ether1 and then subdivide them in four and trunk it to the swicth (with port channel).....

HI,I have ASA 5510 with CSC-SSM-10 ASA 5510 IOS version- 8.4.2 and CSC-SSM-10 IOS version 6.6.1162.Web  filtering is working fine with respective to my configuration.From yesterday morning, i was facing issue with the sites like gmail, webmail.After ...

Can anyone help me with a big question I have.pc test:ip: 192.68.5.100/24default: 192.168.5.2ASA firewall:firewall (ASA 5500 Series): 192.168.5.2 (interface 0/0 inside)Routing 1: 192.168.3.0/24 gw 172.10.10.1Routing 2: 192.168.3.100/32 gw 192.168.5.1...

hello guys ,i have started managing a asa 5510 firewall which is already having c2s tunnels , the problem i am facing is they are configured as "crypto map"i have attached sample config . , i am finding it difficult to understand the parameters used ...