Can you access a site which has firewall using HttpWebRequest?

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.NET3.5

Is it possible to access a site which has firewall set for security reasons.
my client site has firewall settings,so can i use httpwebrequest to access the site
can i use this code below:

C#

try
           {
               Uri uri = new Uri("http://" + _host);

               WebRequest http = HttpWebRequest.Create(uri);
               http.Credentials = new NetworkCredential(_login, _password);
               http.PreAuthenticate = true;

              _httpWebResponse = (HttpWebResponse)http.GetResponse();

               _scs = ServerConnectionStatus.Connected;
               result = true;
           }
           catch (UriFormatException e)
           {
               EventLog.Instance.AppendText(null, new LogEntryEventArgs()
               {
                   Status = LogEventStatus.Error,
                   Text = "HTTPServerCommunication: " + e.Message
               });

           }

Posted 9-Nov-11 17:35pm

DepiyaReddy

Updated 9-Nov-11 17:36pm

Prerak Patel

v2

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RaisKazi · Answer 1 · 2011-11-09T18:16:00

Contuning to SA's Answer(which is comprehensive). As your concern is with Firewall then you first check what is it?
http://en.wikipedia.org/wiki/Firewall_(computing)

System Administrators can set multiple filters/restrictions using Firewall, But it's purpose is to prevent their Domain Network from security threats like hacking/data breaching etc.

If System Administrators wants they can block ALL the sites, But then question is why to have Internet? Regular HTTP and HTTPs sites are mostly does not blocked.

Simply check by accessing your site from Browser, if it is accessible then it will be accessible by your HttpWebRequest as well.

Sergey Alexandrovich Kryukov · Answer 2 · 2011-11-09T17:48:00

If a firewall blocks HTTP or HTTPS, the question is: what does it allow? :-)

Except for pathological cases, normally tuned firewall should be totally transparent to HTTP, so all your code based on HttpWebRequest should work, if both Web application code and your Web request code are written correctly.

—SA

Can you access a site which has firewall using HttpWebRequest?

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