PIX ISP Question 1

[grasscutter]

Hello There,

Could someone help with a question i have about external ip addresses from ISP's.

If i get a range of static external ip addresses from my isp can i use all of these addresses for accessing internal services?

For example if i get 200.200.200.185 with a subnet mask of 255.255.255.248 this results in a range of usable addresses of 185-191

Can you use any of these external addresses? and do you need seperate external ip addresses to access different services on different servers. ie 1 external address for smtp, 1 external ip for www, 1 external ip for rdp etc...

 

[lgarner]

1. Yes, except .191 which is the broadcast address.
2. No. You can specify the specific ports used for each service. They can even be different. This is done in the "static" statements. See

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_tech_note09186a00804708b4.shtml#t12