Pfsene installation behind dreytek router (ADSL)

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http://serverfault.com – I have installed pfsense on an old pc, the objective is to have a captive portal on my network Now the structure is ADSL router(with firewall)--> Pfsense(Wan)---> Lan---> Laptop( innitially just for testing) Now i cannot get internet access on the lan, when i bridge Lan with Wan i get internet but otherwise no. Is it routing issue between lan & Wan or Wan & ADSL router or Firewall in ADSL router is blocking it Do i have to setup NAT in WAN or ADSL router Please Help! (HowTos)