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Forum Replies

  1. Hi Rene

    I have the situation quite like your example.
    In your example, DMZ zone was assigned public IP, We can access from R1 to R3 (via NAT INSIDE_TO_DMZ) and R2 (via INSIDE_TO_OUTSIDE).
    If DMZ zone was assigned private IP address, DMZ want to public (need public ip range from outside interface), we use static nat or port forwarding to point to real server by private IP and some access-list on ASA1 then OUTSIDE can access DMZ.
    But How can INSIDE access to DMZ via public IP?


  2. Hi Zaman,

    Here’s how it works:

    ASA1(config)# object network SERVER
    ASA1(config-network-object)# host
    ASA1(config-network-object)# nat (INSIDE,OUTSIDE) static

    This basically does two things:

    • When a packet enters the INSIDE and exits the OUTSIDE, and the source IP address is then we translate the source address to
    • When a packet enters the OUTSIDE and exits the INSIDE, and the destination IP address is then we translate the destination address to

    We use this so a server on the INS

    ... Continue reading in our forum

  3. by default FW allow from Inside to DMZ, so that means I am from Inside network and I can RDP to my windows server in DMZ. it can be bad in some cases,
    and if I want to block RDP from Inside to DMZ I will need to configure and access list?

    Thank you

  4. Hello Frank

    You can choose to run a routing protocol on the ASA or you can choose to employ static routing, it makes no difference. ASA devices inherently contain routing functionality since they have interfaces on multiple subnets. Routing is required for any communication between these. This does not affect NAT as NAT’s purpose is somewhat different. You just have to keep the order of operations clear in your mind whenever configuring combinations of NAT and routing, such that you know what is applied first, NAT or routing, and in which direction. The fo

    ... Continue reading in our forum

  5. Thanx Laz
    I have been out of the cisco world for some time… If ip routing is enabled on the ASA but no static routes or protocol and attached routers set up with default routes should it still work?

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