Hi ,I have a question to you security guru's out there. By default ASA applies DNS packet inspection with a default (maximum) packet size of 512bytes as recommended by RFC 1035, anything above is dropped.I have a customer that is trying to use large...
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Forum Posts
Hi there,I have ASA 5505 firewall, with 8.2.3 version and security plus license. I open ports for my mail server and it works fine. The problem is sometimes the mail could not be deliverd, send me failed delivey notification. I checked everything on ...
Hi, I've recently upgraded my old firewall from a PIX to an ASA5505 and have been trying to match up the configuration settings to no avail. First problem I have is that I can't ping the new firewall on it's inside interface, despite having "icmp per...
Hi, I'm trying to configure an extended access list on one AS5350XM but I get one way hearing on a voice calls and I can't determine why (please see the attached diagram). There is an OSPF running on both gigabit interfaces and the Loopback address i...
Hello,I had our ASA 5520 crash yesterday for no apparent reason. It came back up ok, but I don't know why it crashed. Below is the crash report. Does anyone have any ideas what caused it?firewall# show crashinfo : Saved_CrashThread Name: Unicorn Prox...
Resolved! Firewall recommendation
Hi I need some good tips when getting a new firewall. Need the following functions: - Up to 300 PCs on LAN side, up to 300Mbps traffic - 10 different VLANs with different rules - Ability to store different profiles, witch can easily be switched betwe...
Hi Folks,Yesterday I have changed the hostname of the CSM 4.1 windows server name from lets say "ABC" to "XYZ".Today I have problems with CSM, though services are running but I am not able to connect through client or through web browser.Any ideas wi...
Resolved! ASA interfaces bounced due to a wr mem
One line of an ACL was changed on an ASA 5520 (primary) and a wr mem was issued to save the change. It appears that when the wr mem was executed, the interfaced on the standby ASA bounced.Can someone help me to understand why this would've happened? ...
We just upgraded our ASA 5520 from 8.2 to 8.4(2) and I am just now getting familliar with the new config. We have an inside, outside, and DMZ interface. There is a web server in the DMZ with IP 10.6.129.5. I would like to NAT this address to a public...
Hello,I am trying to push out recent firewall changes via the Cisco Security Manager and am getting an error:An error response from the device prevented successful completion of this operation. The device provided the following description: crypto ke...
We have a internal node in the environment and our IPS is catching in the event logs stating it is sending traffic to victim ip 0.0.0.0. I am assuming that 0.0.0.0 means a broadcast, is this correct?
Just configured two of the ethernet interfaces on ironport unit. Here is an example of the problem I am encountering.One interace is setup as the management interface on a 1 subnet (which is our main network/domain)Second interace is setup on a 2 s...
I have netflow configured on one of my ASA and it was working fine. There was a changed made on it last night and since then apparently Netflow stopped working, however Netflow software (Solarwinds) is still showing the device up and still showing S...
Resolved! ASA 5505 behind ASA 5510 design question
Greetings, everyone!I'm installing a small "hosted" or "co-lo" style environment this week in our server room so that clients can host their servers with us, etc.Here's the basic layout.Internet ======>ASA5510======>3560 L3 switch======>2960 L2 switc...
Hello all. I've got an ASA 5510 that has been working like a charm for some time now. Until now we've not had to nat any resources to the outside. I created network objects for an internal host and an external host. The internal host has to respond t...
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