>> While the local ISPs are using NATs already for the existing customers (especially for Starhub), we will be faced with nested NATs.
>>
>> Nested NATs is not really that bad, but it is difficult if the following issues occurs:
>>
>> IPs will be shared. IP bans become ineffective thus all servers implements new technology to throttle/block/deny. Session timeouts may be introduced, secure sessions require better encrypted software. Use of service requires login and password as IPs are no longer trusted. User will be required to go through the pain of keying userid and passwords. User may be required to download certificates, use SSL for login etc. Two-way authentication required and yadda yadda may be implement as hurdles and slows down traffic yadda yadda.
>>
>> Solution? IPv6
>>
>> http://www.technologyreview.com/blog/mimssbits/26297/?p1=Blogs
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