firewall

问题 For school I need to make a C# application which uses a MySQL database as backend. The only thing which is stopping me from doing that is the big firewall of our school blocking everything except HTTP traffic on Port 80. Hosting the MySQL database on port 80 is not an option, because that's still no HTTP traffic. Does anyone know a way in which I can still connect to the server? 回答1: You could just install a MySQL server locally and use the loopback address, in that way you don't need to

问题 By default, the Windows Firewall seems to block incoming (locally created listen sockets) connections by default. They can then be permitted per exe file. Is it possible to configure something similar for outgoing connections? So Windows would ask whether to allow or deny an exe's outgoing connections. We are considering creating a custom GUI to enable or disable this functionality, if available. It is a lower-cost option compared to creating our own firewall. I would like to know about XP

问题 I installed hadoop cluster using bdutil (instead of click to deploy). I am not able to access job tracker page at locahost:50030/jobtracker.jsp (https://cloud.google.com/hadoop/running-a-mapreduce-job) I am checking it locally using lynx instead of from my client browser (so localhost instead of external ip) My setting in my config file for bdutil is MASTER_UI_PORTS=('8088' '50070' '50030') but after deploying the hadoop cluster when I do firewall rules list I get following NAME NETWORK SRC

问题 I configured my srx300 device but I cannot access internet from clients behind device. I don't know what is incorrect in my config. I'm not experienced in this. Hope for helps! Here is my config: version 15.1X49-D45; system { host-name SRX300; time-zone GMT+7; root-authentication { encrypted-password "$5$dHbwv06Q$dmi.4XlI3.GcZh3wdgahFDXS2IS3xtatYP0JHQSVCP2"; ## SECRET-DATA } name-server { 208.67.222.222; 208.67.220.220; 10.59.3.11; 10.59.1.3; 8.8.8.8; 4.2.2.2; } name-resolution { no-resolve

问题 I have this ports configured in my 3 virtual machines running Zookeeper and ActiveMQ . root@mom3:~# ufw status verbose Status: active Logging: on (low) Default: deny (incoming), allow (outgoing), disabled (routed) New profiles: skip To Action From -- ------ ---- 22 ALLOW IN Anywhere 2881 ALLOW IN Anywhere 2888 ALLOW IN Anywhere 3888 ALLOW IN Anywhere 61616 ALLOW IN Anywhere 61617 ALLOW IN Anywhere 22 (v6) ALLOW IN Anywhere (v6) 2881 (v6) ALLOW IN Anywhere (v6) 2888 (v6) ALLOW IN Anywhere (v6)

问题 My need is to communicate between 2 client behind NAT using http tunneling. Is it possible? What all setup is needed to achieve this (like http proxy server etc.)? Is there any library or sample code available for implementing http tunneling over TCP in C#? 回答1: It might be possible for you to use this library: http://granados.sourceforge.net/ It supports port forwarding (tunneling in this case), but I haven't tried it myself. It's an SSH library... so if you can set up an SSH server on

问题 I logged in to my GCE VM instance (Debian) and installed ufw and enabled it. However, I forgot to enable port 22. Is there another way to log in so that I can enable port 22 without having to destroy the instance? 回答1: No, the only way to access to the instance is through SSH. You can enable the port 22 using a startup script like the following one: #!/bin/bash /usr/sbin/ufw allow 22/tcp Then, you can add this startup script to your instance either using the Developers Console and pasting the

问题 I have a local server written in C++ listening to inbound TCP connects using plain socket ::accept() and UDP recvfrom(). I have two problems with this that I wish to solve: Can I programatically make Windows let me open the accept socket without it automatically being blocked by the Windows (software) firewall? Are there any ports I can use that will allow my packets to pass through both Windows firewall and external firewall? Port 80 is often taken by things like Skype, but are there others?

问题 I am creating an interface that allows the user to manage (among other things) the Windows Firewall. The GUI that comes with Windows looks like this My GUI is written in Java and uses the netsh advfirewall firewall commands to read the current settings and to save changes. Some of the items are single records in the firewall. The "Windows Remote Management" item however, is one of the "grouped" items. This is a combination of multiple items. Here is one of those items in the combination. Rule

问题 So I have a web service service reference that works localhost and can be pinged from its production url but I can't get access to it via the Service Reference call in production. I believe the issue is my firewall . I have two websites on the same server each with their own dedicated IP address. I am trying to call the web service on the second website from the first website. If I open a browser on my production server I cannot navigate to either website. Error Description:There was no