Network Security

I am seeing some DNs issues and the following message on the ASAI believe this may have something to do with EDNSO.As I understand it, EDNSO can use packet sixes up to 4096?How do I allow traffic to pass through to the DNS server I have inside my net...

Hello,please can somone help me to solve a problem with the ASA5505 firewall system. We have installed a ASA5505 as a firewall system for internet connections.At the ASA firewall system there are only firewall rules and traffik priority rules configu...

I have two Intel Pro NIC in teaming mode.When that machine accesses the internet I get recorded:-Received ARP request collision from 192.168.30.12/001b.2182.23c1 on interface inside on the Cisco.I think it is becuase it picks up the MAC's from the NI...

Hello Experts,We have been seeing the below logs quite frequently on our Perimiter firewall-%ASA-6-201010: Embryonic connection limit exceeded 10000/10000 for inbound packet from x.x.x.x/49189 to y.y.y.y/443 on interface outsideWe have the following ...

DearsI have question about how to block a non-domain user that have an IP from the inside network from accessing the internet by The Cisco ASA 5520.Thanks in advance.Mike

Hello Community,We are providing internet to the  internal users of company through ISA and there are using proxy in there browsers. We have also an ASA 5540 as an edge firewall, We are not providing direct internet access to any of the users.We have...

Hey all,I've recently been seeing some issues on an 877W running c870-advipservicesk9-mz.124-24.T4.bin.  With certain sites (YouTube for example) we see transfer rates ramping up to around 6.5Mbps, which is close to the sync rate of the ADSL connecti...

What is the command to increase the maximum amount of connections from an internal device, need to increase the amount of connections from a specific internal host.

Hello,Does anybody knows if Cisco 831 support Zone-based Policy Firewall? I have IOS version 12.4 25c (c831-k9o3sy6-mz.124-25c.bin) and SDM says that the current IOS image does not support this feature. I'm a little confuse because I know that starti...

Hi there,can somebody tell me if it´s possible to backup a vpn3000 config and its certificate/generated keys in case of hardware failure. If not i have to generate new keys, get a new certificate and tell this all my clients, routers, firewalls ? (w...

How can I install AIS-SSM-10 on my asa5500?

I have this configuration on my structureOutside1     93.63.x.x         primary internet connection (WAN)Outside2    85.33.x.x          backup internet connection if primary downinside        200.1.1.3          Local network connection (LAN)DMZ      ...