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Thiyagu_343098's avatar
Thiyagu_343098
Icon for Nimbostratus rankNimbostratus
Oct 24, 2018

[HSL] log iRule events testing with DNS traffic

Hello All, I'm testing the HSL logging with an irule by triggering DNS traffic. I have the log publisher configured as "Splunk_HSL_Publisher" Could anyone check and help me to know whether the below work to test the HSL logging by triggering DNS traffic

 

when RULE_INIT { set static::general_remote_syslog_publisher "Splunk_HSL_Publisher" } when DNS_REQUEST { set hsl [HSL::open -publisher $static::general_remote_syslog_publisher] HSL::send $hsl "Client connect from [IP::client_addr]"

 

}
application delivery
iRules
LTM

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  • Snl's avatar
    Snl
    Icon for Cirrostratus rankCirrostratus
    Oct 24, 2018

    why don't you try below IRULE ( CREATE A POOL Pool-syslog) contain splunk server

    when DNS_REQUEST {
    set client_addr [IP::client_addr]
    set dns_server_addr [IP::local_addr]
    set question_name [DNS::question name]
    set question_class [DNS::question class]
    set question_type [DNS::question type]
    set data_center [whereami]
    set geo_information [join [whereis $client_addr] ;]
    set gtm_server [whoami]
    set wideip [wideip name]
    set dns_len [DNS::len]

    set hsl [HSL::open -proto UDP -pool Pool-syslog]
    HSL::send $hsl "<190>,f5_irule=Splunk-iRule-DNS_REQUEST,src_ip=$client_addr,dns_server_ip=$dns_server_addr,src_geo_info=$geo_information,question_name=$question_name,question_class=$question_class,question_type=$question_type,data_center=$data_center,gtm_server=$gtm_server,wideip=$wideip,dns_len=$dns_len\r\n"
}