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  • #2220799

    cannot access DNS from internal on Cisco ASA 5520

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    by rmp.dmd1229 ·

    Hi,

    We’re using Cisco ASA 5520.

    I have set-up the following interface

    outside: 172.20.55.240 (security:0)
    zone1: 192.10.10.1 (security: 100)

    i have a server 192.10.10.21 that I need to allow external DNS access

    I have a static NAT
    source: 192.10.10.21
    NAT: 172.20.55.240
    service 53 (TCP and UDP)

    and FW rule
    allow source 192.10.10.21 to any for service 53 (TCP and UDP)

    however this is not working.

    Are there more configuration required?

    thanks!

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