Network Security

I've recently started seeing messages like this on my firewall (separating my internal mail server from my DMZ antispam device). I'm not sure if this is tied in to any firewall IOS upgrades I've recently completed (recently went from 8.2.x to 8.3.1 t...

Hi there,since a couple of days we notice the following major glitches in the network:- FTP services temporarily not available from LAN to DMZ and from, WAN (via VPN) to LAN while FTP connections from WAN to DMZ are working. The time range is from se...

Hi,We just upgraded from 8.2.4 to 8.2.5.20 on each firewall. The Primary and Secondary work when they are standalone but, when we connect the fail over link from the Primary to the Secondary, invariably, one of them will go into a constant boot cycle...

Hi there,I am in the process of adding a lot of servers to sit behind our new ASA 5505 (8.4) firewall. At the moment I have added 2 servers and they are both NAT'ed to 2 different public IPs.Server 1     192.168.10.1 -> 80.*.*.1Server 2     192.168.1...

Hi Everyone,Im building a Cisco 5520 with a two physical interfaces and 6 or so sub-interfaces. We have G0/0 (broken down into the sub-interfaces) and G0/1 (not sub-interfaced). I have the ACL's in place and I can ping through the devices from one su...

I have the need to do an outbound NAT redirection.  So what I mean is this.  I have a custom program that uses SSH to port 22 from a server inside the ASA firewall.  This goes out to a server on the Internet over port 22.    The ISP of the SSH server...

I am a little stuck on this rDNS issue with the ip/fqdn not matching our PTR entry on the IPS DNSWe have web VPN acces setup on the ASA ethernet public IP address.. ie.  12.244.214.3for the PTR DNS we have our mail server fqdn set to  ie. 12.244.214....

Hi,I have received cisco ASA 5505 but I can't connect to it on my Mac (running OSX).I tried:1. Connecting the laptop directly to one of the Ethernet ports. It gets assigned a 169.254... address (i.e., no DHCP). Configuring a manual IP of 192.168.1.1 ...

Hi,I've configured following the ASA:pager lines 24logging enablelogging timestamplogging buffer-size 512000logging asdm-buffer-size 512logging monitor informationallogging buffered informationallogging trap debugginglogging asdm informationallogging...