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sims
sims
Explorer II
June 19, 2019
Solved

VIP

  • June 19, 2019
  • 2 replies
  • 5092 views

Hi,

what is the difference between nating using VIP or normal nat 

Thanks

    Best answer by hubertzw

    To allow Internet users access your website you need DNAT with VIP object as a destination (in the policy).

    For Internet access only (for local users) you need SNAT

    2 replies

    jorge_americo
    jorge_americo
    New Member
    June 19, 2019

    Hi.

     

    https://kb.fortinet.com/kb/viewContent.do?externalId=FD31893

     

    VIP are used on flow public to private and NAT are used to Private to Public. But in older firmware, the VIP overlap nat table.

    hubertzw
    hubertzw
    New Member
    June 19, 2019

    NAT - it can be source NAT (SNAT) and destination NAT. With SNAT you can select exiting firewall interface or a pool of IP addresses. VIP is used as an object to map private and public IP. Primarily it is used for DNAT, but when the host, for which you have VIP configured, initiates connection, VIP object is also used for SNAT. There are some exceptions because it depends on software version and NAT settings (policy NAT vs central NAT). One more: VIP can have mapping one-to-one or one-to-many (server or load balancing). You can load balance traffic which is destined to one public IP, to one of your internal servers. It works as normal load balancer with possibility to monitor servers.

    sims
    simsAuthor
    Explorer II
    June 20, 2019

    Hi,

    Suppose I want to publish  my website , which nat i ll be using ? 

    If just need only internet access which nat ill be using 

     

    Thanks

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