Solved

Using Dynamic NAT with 1-to-1 NAT

Posted on 2006-07-24
9
327 Views
Last Modified: 2010-04-09
Is there normally a problem running dynamic nat with 1-to-1 NAt?

Scenario: all users can access the internet, some computers use dynamic NAt others use 1-to-1 nat,
internet pages constantly need to be reloaded in order to see webpages when more than one user is in the office.

One-to-One Nat setup - each private IP has a public IP

Dynamic NAT setup - one private IP for each pc

All computers are on the same network range 192.168.1.x
0
Comment
Question by:wirelessadmin
9 Comments
 
LVL 9

Accepted Solution

by:
jjoseph_x earned 500 total points
ID: 17169433
Normally that shouldn't be a problem.  Most organizations have a PAT (which is the actual term for that you call Dynamtic NAT) and a NAT setup (usually the PAT is for the users as you're unlikely to have some 50 or more publics IPs with the NAT for certain servers).

I have a setup similar to yours (I've got a NAT address and everyone else uses PAT/Dynmatic Nat) and we don't have the problems that you're experiencing.

What kind of firewall are you using?  Also are you using a proxy server for your web browser?
0
 
LVL 5

Author Comment

by:wirelessadmin
ID: 17170148
firebox firewall
0
 
LVL 9

Expert Comment

by:jjoseph_x
ID: 17170393
Unfortunately I am not-at-all familiar with the Firebox firewall.

However, what you describe seems like a problem with the translation table.  Does this problem only occure for the people with Dynamic Nat, or does it only happen to the people with the 1-to-1 NAT, or does it happen to both of them?
0
 
LVL 5

Author Comment

by:wirelessadmin
ID: 17171000
both
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 9

Assisted Solution

by:jjoseph_x
jjoseph_x earned 500 total points
ID: 17171016
But if you, for instance, get rid of the 1-to-1 NAT does the problem go away?  If this was related to the translation table, the 1-to-1 NAT shouldn't really be affected...  so it might be something else.

Or this problem might not be related to the NAt at all.
0
 
LVL 9

Expert Comment

by:IPKON_Networks
ID: 17175218
This actually sounds like it might be a caching issue. Do you use a proxy/ISA server?

Sorry to join in the conversation btw.

Barny
0
 
LVL 79

Expert Comment

by:lrmoore
ID: 17175272
Is there any overlap between the dynamic address pool and any of the static nat entries?
How many public IP addresses do you have?
0
 
LVL 5

Author Comment

by:wirelessadmin
ID: 17188563
there is no overlapping
0
 
LVL 9

Expert Comment

by:jjoseph_x
ID: 17251145
So what ended-up being the problem?
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Do you have a windows based Checkpoint SmartCenter for centralized Checkpoint management?  Have you ever backed up the firewall policy residing on the SmartCenter?  If you have then you know the hassles of connecting to the server, doing an upgrade_…
The DROP (Spamhaus Don't Route Or Peer List) is a small list of IP address ranges that have been stolen or hijacked from their rightful owners. The DROP list is not a DNS based list.  It is designed to be downloaded as a file, with primary intention…
In this video I am going to show you how to back up and restore Office 365 mailboxes using CodeTwo Backup for Office 365. Learn more about the tool used in this video here: http://www.codetwo.com/backup-for-office-365/ (http://www.codetwo.com/ba…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, just open a new email message. In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…

920 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now