Network Security

My configuration:internet - linux router - (acl 104, in)cisco router(acl 102 in)-acl 102 is for originating traffic for 172.31.0.0/24 and acl 104 is for returning traffic.router has:- 172.31.5.0/24 (linux - internet)- 172.31.2.0/24 (cisco - linux - i...

We installed an ASA 5510 today and are having some problems. I can ping to the inside interface from my PC but can not get beyond that. From the ASA I can ping the outside workd no problem. Here is out config. Of course I removed our outside addresse...

Hi All,We previously had a Checkpoint Appliance along with and ISA Server. We are doing some upgrades and it was decided that the Checkpoint Appliance would be replaced with the Cisco ASA 5510. I now need to get this working and I have not a lot of e...

We are trying to get smtp traffic passed into our mail server. Here are the commands that I issued. It is not working at all. Thank you for your help.access-list Outside_access_in extended permit tcp any eq smtp host 10.10.1.11 eq smtpaccess-group Ou...

We provide enterprise VOIP to a group of customers with our Callmanagers located at two Network Operations Centers. We are in an IP only environment (no PBXs, gateways, etc). Both NOCs and Callmanagers reside behind a firewall. All sites connect to t...

Hi All,I am getting below error in NAC OOB VG agent login;"Login Failed! OOB Error: connected device <client_MAC> not found. Please contact your network administration."Please help if someone came across such situation and have solution.Hemen

I am trying to find out a way to restrict VPN users to specific resources inside the corporate network. Before, we had a VPN 3K concentrator and by using profiles we were able to restrict access to specific networks/resources. Now with the ASA 7.2 an...

Hello,I have a 871w 12.4 (11)T1. I am trying to setup a linksys spa942 phone with Trixbox v1.2. Calls last for 30 seconds then I get one way audio out. When I disable the firewall it works just fine. I've been through 4 cisco engineers and it's still...

When a bringing up a new sensor in a network typically how long should the sensor be allowed to baseline or soak for before tunning begins? Does cisco recommend a specific time period?

I have a client which we connect to through the FWSM, this client now needs to send us some multicast traffic. We currently use multicast traffic heavily inside our network just not through the FWSM....how would I enable our servers to receive multic...

Hi,Like I said in the title, we have a PIX 525 running version 6.3(5) and we have the problem described in Bugid CSCsb34758:connection to DMZ fails after PIX authentication sessionWe had version 6.3(4) before the upgrade and didn't have this problem....

I am in a job where expansion has happened quickly, and we are in the process of upgrading our network, and with time constraints etc we are forced to use internal heads to figure things out.We know we have to upgrade our internal equipment and one t...

I have multiple (let's say about 50) remote sites which have an ASA 5505 at them connecting via a ipsec vpn connection back to our main office. Most of the time, these connections work great, but it seems like within the span of about 1 week, at lea...

Hi,I need to create this network 192.168.248.0 255.255.254.0 on my asa.when i created it with ASDM, by default it created with the mask 255.255.255.0,How can i change that default mask to the correct i need ? (255.255.254.0)