hi: we are using freeradius 3.0.9. and we want to make the sql accounting data easier to read/process. currently the characters below we may use are escaped by default '\' => for windows account like "domain\user". "+","=" => for base64 encoding these two characters are used is it safe the add these characters to query.conf "safe_characters"? PS: by default the method to escap the "\" character seems not correct. when user use "domain\user" to login, if I check with "radiusd -X", the name sometimes present as 'domain\user', and sometimes present as "domain\\user". but finally when it write to sql, it becomes "domain=5C=5Cuser". I think the correct escaped string should be "domain=5Cuser" ? thanks a lot for help!! Regards, tbskyd