Network Security

Hi,We have Cisco ASA 5520.Nowadays we are getting one problem that is TCP/UDP connection fluctuating continuously.I am checking in ASDM, suppose now showing total no. of connection 50 within 2 sec it's reaching 3000 and again come back to normal.It's...

Hi, I want to configure Read-Only and Read-Write String in Firewall 5520. I do not want to use default strings. Please help as I am not getting option for R-O & R-W strings with this model.

The problem occured only once as now after over 120 days of uptime. The ASA crashed and rebooted suddenly. There is something interesting in crashinfo file:[...]Region #12 [0x01543720] from #5 tback F4 dump off 0x4c01543720: cc cc cc cc 69 00 00 00 2...

This is a somewhat broad question, but i am going post it anyway and see if anyone can comment, as i feel it may relate to an incorrect NAT statement. I have a telephone system sitting behind the ASA, which i've NAT'd inbound and outbound to an inter...

I have IPS 4255 with IOS 5.x,it is monitoring My internet zone traffic. In my event viewer i m seeing few IPs are consider as attack towards my global IP addresses that are not being used in my network. These IPs are spare global IP for future use. A...

I am using a 2811 router with 12.4(15)T5 Advanced IP.When enabling inspection on my HTTP out rule, several common websites do not funcion properly. This is not a problem on our other 2811 routers not using Zone-Based firewall. One example site that c...

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, I want to configure Read-Only and Read-Write String in Firewall 5520. I do not want to use default strings. Please help as I am not getting option for R-O & R-W strings with this model.

Hi, We are using Site to Site Tunnel between India and DC but for last two days we have been experencing outage from DC tunnel and from India all tunnels are well connected and it happens only for 15 to 20 minutes. Can anyone tell me which of the ste...

Hi, we have a problem with a problem with an alcatel device.the problem is that when we telnet (from the management server) to the device everything is ok, but when we give a particular command the results never come back through the telnet console! ...

Hi All,Is it possible to have a VPN connectivity on the Nated publuc ip.ThanksMadan

Hello,Does anybody know if there is documentation regarding the recommended signatures to be activated depending of the network service being deployed?Let's say that I have several servers behind a firewall, therefore, in theory I would only need to ...