Network Security

I tried to upgrade my ASA5520 from V8.2 to V8.3 last week and although the log reported no issuesthere obviously were  'cos a some of my NAT mappings stopped  completely (!)I was unabled to complete a fix within my upgrade window so I had to rollback...

I have ADSL internet access through a Cisco 837 router. I recently purchased an ASA 5505 as I am due to start my CCSP certification and wanted this for hands on configuration.My question is what would be the best / recommended solution for adding the...

How and when does the cisco ssl webvpn relay loader activex control fire on a user computer.  I have noticed that this starts sometimes on users browser but other times it is not running if you look under IE's manage add-ons.  Where within the ASA do...

Hi I have a 6509-E chassis with a FWSM [FWSM Firewall Version 3.2(5) and I have enabled NAT control. In configuration file there are the following commands:nat (inside) 1 10.10.0.0 255.255.0.0 tcp 0 300nat (inside) 5 10.10.10.5 255.255.255.255 tcp 0 ...

One of my client has upgraded their Microsoft as well as network infrastructure. Now exchange 2010 and windows server 2008 would in DMZs.  The Microsoft consultant inform that the windows client on inside network  will be going to use RPC to communic...

Hello, I have a  problem with the DNS. Three zones: outside, dmz, inside. Users of a DMZ-VLAN are using an  external DNS server, but they must be able to access the internal mail server (inside). When trying to resolve the mail server IP, the DNS  gi...

Hi,Is FWSM Failover feature supported on a VSS environment? We currenlty have two 6509 with FWSM on both switches. VSS is currently enabled and I would also want to enable the failover on the FWSM. The current IOS running is s72033-adventerprisek9_wa...

Hi all,How do i configure outside NAT such that my external public ip is map to one of my  dmz private ip.What i want is when any address on the internet connects to my public ip on a certain port it will translate to my dmz ip which my server is usi...

hi folks...need a little assistance...not sure why my enable access isnt working when remoting into a fwsm...I'm running v 4.0(4) code,I have ssh access, have local database account, priv level 15...I can login with user access, but when i enter enab...

In july 2010, the servers DNS will be modify.http://www.root-dnssec.org/https://www.dns-oarc.net/oarc/services/replysizetestOn my LAN (PC win XP SP3 with firewall down and anti-virus down too), i tested this command:nslookup -q=txt rs.dns-oarc.netThe...

Hi folks,Have a bit of a delima.  Running Cisco FWSM Version 3.2(2) on Catalyst 6513, in single context mode.I cant quite figure out the configuration...When sessioning from the swtich to this module, it appears to use a local account password,The de...

Hi all,I was wondering how to troubleshoot if failover happens to one of our firewall. Let say we've received alerts from monitoring team. Normally what I'll do is to:1. ping both firewall (primary & secondary) to make sure both of them are running.2...