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Hoang_Hung's avatar
Hoang_Hung
Icon for Cirrus rankCirrus
Sep 05, 2019

Irule F5 response IP public

Hi guy.

I have config GTM on F5 I4800. After config complete. I have try test, all any thing very ok.

But I have bought subdomain: abc.com.vn and config Delegation to IP Public for Listener. When config complete. I try test. But I can not reciver IP public 123.123.123.12 for ( Pool virtual : 10.10.10.10) ( It is IP NAT for 10.10.10.10 ).

I think that. I need config iRule, F5 response IP public eq = 123.123.123.12.

Please help me.

 

Thanks all

application delivery
iRules

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  • KeesvandenBos's avatar
    KeesvandenBos
    Icon for MVP rankMVP
    Sep 06, 2019

    Hi,

    You could use this irule:

    when DNS_RESPONSE {
     set rrs [DNS::answer]
     foreach rr $rrs {
     if { ([DNS::rdata $rr] eq "a.a.a.a")} {
    DNS::answer clear
    DNS::answer insert [DNS::rr "aaa.aaa.com. IN A b.b.b.b"]
 
}
     elseif { ([DNS::rdata $rr] eq "c.c.c.c")} {
    DNS::answer clear
    DNS::answer insert [DNS::rr "ccc.ccc.com. IN A d.d.d.d"]
}
 
}
}

    add it to the DNS Listener.

    This Irule fixes 2 A records.

    a.a.a.a = internal ip address#1

    aaa.aaa.com. = the A record#1

    b.b.b.b = external ip address#1

    c.c.c.c = internal ip address#2

    ccc.ccc.com. = the A record#2

    d.d.d.d = external ip address#2

    Cheers,

    Kees