Forum Discussion

Aviv's avatar
Aviv
Icon for Cirrus rankCirrus
Apr 19, 2021

Irule to get host name from ip

Hi All,

i need to send a wakeup command to computer when users connect to the ssl vpn portal.

wakeup command is a url that ends with "hostname" exemple: https://server/Services/SimpleWakeup.aspx?Name=comp1

i have all the ip's of the computers on pager attribute in Active Directory. %{session.ad.last.attr.pager}

dig command give me the hostname i need.

exemple: dig +short -x 192.168.1.1

how can i integrate the dig command (or other solution) to a variable , when any user connect to the apm portal?

application delivery
BIG-IP Access Policy Manager (APM)
iRules
  • spalande's avatar
    spalande
    Icon for Nacreous rankNacreous
    Apr 19, 2021

    Something sort of below. You can either try to set a new variable for computer host or use a variable directly from the iRule.

    Modify as needed. DNS server (8.8.8.8) would be your internal DNS or you can also use VIP. 

    when ACCESS_ACL_ALLOWED {
set pager [ACCESS::session data get "session.ad.last.attr.pager"]
set serverhost [RESOLV::lookup @8.8.8.8 -ptr $pager]
ACCESS::session data set "session.logon.computername" $serverhost
}