We need to configure our SP2013 people picker to support a new one-way trust domain. According to this msdn article I need to run follow command in every WFE.
STSADM.exe -o setproperty -pn peoplepicker-searchadforests -pv "forest:Contoso.com,Contoso\User1,Password1; domain:Fabrikam.com,Fabrikam\User2,Password2" -url http://central
My question is, do we need to open port 389 (LDAP port) on WFE towards the one-way trust domain DC? I am not so sure the people picker query is started from end user browser (the IE9) or started from SharePoint WFE, or both?