opening ports and NAT

[Yates76]

Hi everyone!

Okay, I am muddling through how to open ports.

First, can anyone explain:

fixup

What is that? I am so used to Netscreen, it's sad.

Second, using an ip range of (example) 192.168.5.75 (inside) and 192.168.5.76 (outside) network mask 255.255.248.0 both, what would it look like to allow my users to use ICQ? Either CLI or PDM examples would be fine. Would rather CLI, but hey, I'll take what I can get.

Is it the:

access-list

command?

Thirdly, setting up NAT using those IP addresses supplied before (remember, they are example IPs only, not production) how would that look? Make as many assumptions as needed to be able to give me a working NAT, based on what info I gave. If the router (or any thing) needs an IP, use 192.168.5.77. A global range would be based roughly on that. So you know, we own a class B.

Thanks guys and gals, I will be trolling Cisco for available info.

 

[Yates76]

Uhm, is it me, or is it setup to allow EVERYTHING right from the start?

How do I setup specific ports for specific reasons? For example, the HR department connects to another company at a specific port?

I'll stick with the ICQ example, unless a better can be used.

 

[Yates76]

Hi everyone!

Okay, I figured it out. Except the NAT part, but I am further along than before.

Yes, I learned that we don't need to open specific ports for people.

It's easier to deny than to write all rules.

Well, any hints on NAT would be appreciated.

Thanks every one!

Maybe before this machine goes live, I will post the config?