Could having site hosted on dynamic ip result in problems with cookie storage?

I have a site hosted on computer from home with residential broadband.  I don't have a static ip.  So I use dns2go.com dynamic DSN service to resolve it.  

Cookies are not being saved from my site for a couple users who confirm they have cookies enabled and are able to successfully accept cookies from other sites.  

Could the DSN service have anything to do with it?
markschenkelAsked:
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b0lsc0ttConnect With a Mentor IT ManagerCommented:
Do you actually have a domain name?  It would seem you do with that service.  I sort of doubt it would just be the dynamic IP.  An IP isn't required for a site.  Although normally a server doesn't have a dynamic one you can have many sites on the server (so sharing the IP).
Is the cookie getting made at all and just not being saved (i.e. with an expiry date) or is it not even made?  Have you tried server script and client side script to make cookie?  What are you setting, if any, for domain or path when making the cookie?
Your set up with the dns2go may be a cause but I would think it is something else causing the issue, not specifically the lack of static IP.
Let me know if you have a question or need more info.
bol
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markschenkelAuthor Commented:
Actually I learned the users had firewalls which required my site to be listed as a "Trusted Site".  

Is there a website out there which has step by step instructions to enable cookies for each security product?
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markschenkelAuthor Commented:
Turns out the problem was people had firewalls on.  As you were the only one who responded I will give you the points.
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b0lsc0ttIT ManagerCommented:
Is there a website out there which has step by step instructions to enable cookies for each security product?
No.  At least that I have ever seen.  I have seen lists for common products but those are version specific so often not real helpful.  There are just too many products, versions, etc.
I'm glad I could help you with this and you have it working.  That type of security software, etc is a common cause of cookie issues but can be very hard to diagnose and help someone correct because of the variety of programs.  Thanks for the fun question, the grade and the points.
bol
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