Most voted "firewall" questions
A firewall (Wall of Fire) is a device of a computer network that aims to apply a security policy to a particular point in the network.
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answers483
viewsAVG accuses Windows Service Application infection if Windows Firewall addition command is present
I have an app that’s a Windows Service (Windows service) and because of facilities I am seeking to add a method to add it to Firewall of Windows automatically. Thus: procedure…
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answer576
viewsHow to block access to a hostname
I need to block access to the site www.facebook.com of a Linux machine. I must block this on the machine itself, that is, I do not have the possibility to do this with a Proxy. Initially I thought…
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answer717
viewsiptables - packet marking with redirect to squid
I have a firewall with load balancing through packet marking and a squid together. I am marking the packages so that my two links are used ( gvt and OI ) then the link1 = gvt and the Link2 = OI It…
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answer79
viewsIdentify CSS not loaded in with Firebug?
I have a Site hosted at Locaweb, and I own a firewall in the company Pfsense that for some reason is preventing the loading of CSS on the machines of my network. I want to know how to identify what…
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answer63
viewsInvalid enumerator when trying to add a filter using WFP by C#
I’m trying to bear a code of c++ to c#. My goal is to block a website using WFP. After translating the code, I seem to have missed something because when adding a filter I get the message "An…
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answer162
viewsProblem trying to transfer files using Apache FTP implementation in Java
I am performing file transfer via FTP using JAVA. I’m using the classes Ftpclient and Ftpserver apache. In a specific environment, sometimes files are not transferred. I call the method…
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answer61
viewsWhy does the server require open ports on an access modem but the client does not?
I had this question about how much I was thinking of creating a chat for direct communication between two computers whether local or remote. This will be my first study project where I apply network…
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answer27
viewsHow to differentiate a url typed by the user and the one invoked by the html code
I need to compile an analytical report for a client about which Urls each network user accessed. However, the reports I’ve been observing show thousands of records that don’t serve that purpose.…
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answer723
viewsAdmin permission to run netsh in java
In a java program I developed, I need to open connection on port 21 (ftp) but Windows 7 by default blocks this port. I tried to add a rule in the firewall allowing the connection using…
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answers320
viewsTomcat 7.0.76 HTTP Status 500
Good evening, everyone, I’m racking my brain with this Centos 7.0. The story is this:: I built a machine with Centos 7.0 and installed Tomcat. Until then I finished the standard page that confirms…
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answer223
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viewsHow to set up pfsense for the secondary Windows 2012 R2 server to take over when the main Windows 2012 R2 server crashes
The situation is as follows: There are two Windows 2012 R2 servers in the replicating domain, and pfsense with the active DHCP distribution service in the LAN interface and the ips of the setted…
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answer345
viewsAuthentication error in WSDL
using the phptester to test the following code: <?phptry { $opts = array( 'http' => array( 'user_agent' => 'PHPSoapClient' ) ); $context = stream_context_create($opts); $wsdlUrl =…
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viewsRstudio Server, with Shiny on AWS
all right? See if you can help me with a question. I use Rshiny for a Dashboard where I work, last month we migrated this application to a virtual machine (aws), installed the Rstudio server and…
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answer2747
viewsFreeing external access to a particular port through Iptables
I currently have two network card on my Ubuntu 16.04 server, configured as follows in the file interfaces: auto lo eno1 enp2s0 iface lo inet loopback #Rede Externa que vai para antena de Internet…