When I visit this site http://ifconfig.me/ip using the web browser I get the expected text output. However if I try to do it from Pharo 6.1 (Windows 8.1) I get a 403 forbidden response using this code: ZnClient new systemPolicy; beOneShot; accept: ZnMimeType textPlain; timeout: 6000; url: 'http://ifconfig.me/ip'; get. 2018-09-16 03:06:18 011 Retrying ConnectionTimedOut: Cannot connect to 153.121.72.212:80 2018-09-16 03:06:19 012 Connection Established ifconfig.me:80 153.121.72.212 288ms 2018-09-16 03:06:19 013 Request Written a ZnRequest(GET /all.xml) 1ms 2018-09-16 03:06:19 014 Response Read a ZnResponse(403 Forbidden text/html;charset=iso-8859-1 209B) 318ms 2018-09-16 03:06:19 015 GET /all.xml 403 209B 319ms 2018-09-16 03:06:19 016 Connection Closed 153.121.72.212:80 In Firefox this is the output Request Headers Firefox: Host: ifconfig.me User-Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:62.0) Gecko/20100101 Firefox/62.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US Accept-Encoding: gzip, deflate DNT: 1 Connection: keep-alive Upgrade-Insecure-Requests: 1 Response Headers Firefox: HTTP/1.1 200 OK Date: Sun, 16 Sep 2018 16:47:02 GMT Server: Apache Vary: Accept-Encoding Content-Encoding: gzip Content-Length: 32 Connection: close Content-Type: text/plain Any idea? Cheers, Hernán