Michael, burn it as an image on a DVD-R at the lowest speed possible. DVD+R are more effective if you are writing at higher speeds because this format uses a number of improved technologies like ADIP (ADdress In Pregroove) system of tracking and speed control making it less susceptible to interference and error than the LPP (Land Pre Pit) system used by DVD-R, which makes the ADIP system more accurate at higher speeds. But since we recommend burning/writing disk at lower speed we always recommend DVD-R formats. Gimme a shout in case you run into any issues. Please rate this post and mark it answered for others to refer if you feel this was helpful ! ... View more

No ..doesnt take that long. since you are not running a full iso image (not a first time install) therefore upgrade DVD will not take that long.  may be 30 minutes to an hour. ... View more

Ok let me explain, static (dmz,outside) 192.168.50.0 192.168.50.0 netmask 255.255.255.0 This command is also called "self static", this means if a source 192.168.50.x in subnet DMZ goes to outside world the source IP should be preserve (source ip would remain as 192.168.50.x). Also if someone from outside world 192.168.20.x tries to access a machine in DMZ 192.168.50.x then it will access the machine using its real IP and not any natted IP. The above static will give you the same results as nat (dmz) 0 access-list nat_0_acl access-list nat_0_acl permit ip 192.168.50.0 255.255.255.0 192.168.20.0 255.255.255.0 Lets come down to another static now, static (dmz,outside) 192.168.20.15 192.168.50.5 netmask 255.255.255.255 The above means if a source outside sends a request on 192.168.20.15, firewall will translate it to 192.168.50.5 on DMZ. basically you are hiding the machine xxx.50.5 behind xx.20.5. Please rate if this helps ! ... View more