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Configure multiple Sharepoint Websites with single Public IP

Posted on 2016-10-13
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Last Modified: 2016-11-12
I have 23 sharepoint websites that is public accessible. Currently all these websites configured with dedicated internal IP that is NAT to outside dedicated public IP for each site. we use CISCO ASA 5520 firewall and CiSCO CSS 11501 for website load balancing. Is there any recommendation configuration to reduce the number of public IP requirement?.
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Question by:sumod_jacob
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by:Walter Curtis
ID: 41842648
What version of SharePoint?

How are you SharePoint websites configured? Are they all on one farm or different farms? How are the web apps configured?

Some more information would be helpful....
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Expert Comment

by:lruiz52
ID: 41842653
The way we do it is setting up each web application with a unique Host Header and setup Alternate Access mappings.
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Expert Comment

by:Walter Curtis
ID: 41842671
If this is a newer version of SharePoint (2010 SP2 +) you could use Host Named Site Collections to facilitate the use of one virtual IP and configure your public DNS to hit your firewall. If you are using SSL you could use a wildcard certificate.

Good luck...
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Author Comment

by:sumod_jacob
ID: 41842677
Sharepoint 2010 and 2013 are in our farm. Total three farms. We use IIS and SSL for all site. Changes has to make in sharepoint or in network? PAT configuration will help this to achieve?
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Author Comment

by:sumod_jacob
ID: 41842690
Currently uses virtual IP for each site and one to one NAT to public IP.
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Walter Curtis earned 2000 total points (awarded by participants)
ID: 41842698
Setup is in SharePoint as well as at the network level. Not sure what PAT configuration is, but if you mean NAT, yes that would be involved. A few points:

If all sites are working fine, it may not be worth the trouble to make the changes. If your SharePoint sites are set up as Path Based Site Collections as part of a Path Based web app it does require moderate to advanced effort to convert to Host Named Site Collections as well as the farm(s) reconfiguration. The upside would be that you could cut your public IP's to one address and you could lower the number of web apps required which would increase performance. The key to this would be great planning ahead of time, much more planning than what is possible via a forum.

Hope that helps and get you started in the right direction...
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by:Walter Curtis
ID: 41884536
Solution offered was accurate and correct.
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