Как открыть порт 8080

Different methods to open port 8080 in Debian

Some services like Tomcat accepts connections on port 8080.

But this port is not open by default in Debian Linux servers and can cause the service to fail during setup.

Today, we’ll take a look at how our Support Engineers configure Debian to accept connections in port 8080.

What is port 8080 used for?

Port 8080 is an alternative to port 80 and is commonly used as a proxy and caching port. It is also above the well-known service port range (1-1023).

For example, applications like Apache Tomcat, M2MLogger, and a Web GUI use port 8080 to connect to internet services.

If web address uses port 8080, it require a default port to override and connect instead of the port 80 ie., the user has to type http://localhost:8080/web.

• localhost ( hostname ) is the machine name or IP address of the host server e.g Glassfish, Tomcat.
• 8080 ( port ) is the address of the port on which the host server is listening for requests.
• web – path pointing to the root of the public folder of your server.

How do I find out my port 8080 is opened?

It is simple, you can use netstat command to see if port 8080 is opened.

netstat -aon | findstr "8080"

This command displays all connection, process Id and listening port.

Now, let’s take a look at the different methods and how we open port 8080 in Debian.

Methods to open port 8080 in Debian

There are different methods to open port in Debian.

Now, let’s see each one of them listed below.

1. Using iptables

From our experience in managing servers, we see that iptables is one of the most common ways to open port in Debian. This requires certain rules to allow and block traffic in iptables. Any wrong command can result in server unreachable.

That’s why, our Support Engineers always double check the iptables rules before saving them. And, the iptables command to open port 8080 is,

iptables -I INPUT 1 -i eth0 -p tcp --dport 8080 -j ACCEPT

service iptables save

service iptables restart

To list which ports are opened run the below command

iptables -L

2. Adding port in apache2

Recently one of our customers reported us with a problem to add port 8080 in apache2 where his OS is Debian 4.1.2-25.

So, to fix the problem we opened apache2/ports.conf file and added the following lines.

NameVirtualHost *:8080 Listen 8080

And also in apache2/sites-available/default file added the below line.

Then, restarted apache2 service and verified if the port is opened by running the command

netstat -ntlp

3. Using UFW

Similarly, another option to open port 8080 is using UFW (Uncomplicated Firewall).

This is a user-friendly front-end for managing iptables firewall rules easier.

With UFW for an application like Tomcat to open port 8080, we execute the steps like this.

ufw allow 8080/tcp ufw status

The output will look like this.

Status: active To Action From -- ------ ---- [ 1] 22/tcp ALLOW IN Anywhere [ 2] 80/tcp ALLOW IN Anywhere [ 3] 8080/tcp ALLOW IN Anywhere

4. Using FirewallD

In addition, FirewallD is a default firewall management tool that manages the system’s iptables rules.

Opening a port 8080 in firewalld is fairly simple, you need to run the command and reload the service as shown below.

firewall-cmd --prmanent --add-port=8080/tcp firewall-cmd --reload

To list the ports that are opened run the below command.

firewall-cmd --list-ports

[Having trouble with Debian open port 8080? We’ll fix it for you.]

Conclusion

To open port 8080 in Debian, we can use any methods like iptables, ufw, firewalld, etc. Today, we saw how our Support Engineers opened “Debian open port 8080”.

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How to open port 8080 in DigitalOcean – 3 Common issues fixed

Hosting applications like Tomcat, Jenkins, etc. will require your DigitalOcean Droplet to allow connections on port 8080.

This requires Droplet firewall modification. At times, even after changes in firewall, the application can fail due to improper firewall set up.

At Bobcares, we help cloud server owners to configure the firewall as part of our Managed Cloud Services.

Today, we’ll see how we open port 8080 on the Droplet, common errors along with their fixes.

How to open port 8080 in Droplet?

In DigitalOcean Droplets, installing common services like web server, mail server, etc. do not need further firewall changes. That means, when the service starts, we can connect to port 80, port 25, etc.

But, that is not the case with custom ports like 8080. They need to be opened in firewall.

Firewall modifications are really critical. Any bad firewall rules can mess up the working of the entire server.

Now, let’s see how our Cloud Specialists open up the port 8080.

1. Using UFW

All DigitalOcean Droplets usually come with a firewall tool called UFW, or Uncomplicated Firewall. We’ll first see the steps to open port using UFW.

Here, before adding the rule, we first confirm that UFW is active. To see the status, we use :

ufw status

When it is active, the result looks like

root@ubuntu-s-uno-01:~# ufw status Status: active

Now, we can open port 8080 by the command

ufw allow 8080

The output on successful addition of rule will look like:

root@ubuntu-s-uno-01:~# ufw allow 8080 Rule added Rule added (v6)

And, it shows in the rule list as:

root@ubuntu-s-uno-01:~# ufw status Status: active To Action From -- ------ ---- 22 ALLOW Anywhere 8080 ALLOW Anywhere 22 (v6) ALLOW Anywhere (v6) 8080 (v6) ALLOW Anywhere (v6)

2. Using command-line

Similarly, we often use command-line utilities to add the firewall rules in the Droplets. For this, we use the command,

iptables -I INPUT 1 -i eth0 -p tcp --dport 8080 -j ACCEPT

This opens up the port 8080 on the server.

Common errors while opening port 8080

Although, the process of opening port 8080 looks really easy, we often get requests from customers about failure of apps on port 8080.

Let’s now have a look at the top errors that we see.

1. Server IP not listening

At times, even after adding firewall rule, the server IP may not listen on port 8080.

Here, our Support Engineers check the firewall rules and confirm that rules are added correctly. Often, the “Listen” directive of the application will have only localhost interface in it.

Therefore, to fix the problem, we edit the Listen entry of the application config file and replace ‘127.0.0.1’ as ‘0.0.0.0’. Now, the main IP also starts listening.

Again, we confirm this by telnet command. On successful connection on main server IP 165.xx.1×6.65, the results look like:

$ telnet 165.xx.1x6.65 8080 Trying 165.xx.1x6.65. Connected to 165.xx.1x6.65. Escape character is '^]'.

2. Application not showing in browser

Another common problem is that application do not show up in the browser. For example, the Tomcat application pages shows timeout error.

In this case, our Cloud Engineers first check and confirm the process running on port 8080 using the command,

netstat -plan | grep :8080

Usually, some other program will be using that port. And, this causes Tomcat service to fail.

To fix, we check the alternate processes and kill those that shouldn’t be running. Then, we restart Tomcat service and the pages show up correctly.

3. Cannot connect on 8080

Even when the firewall rules, service configuration, etc. are correct, customers can have problems with port 8080 connection.

Most common reason for this will be firewall restrictions at user’s computer.

Here, we isolate the problem by checking the connection from an alternate location. When connection works from a new location, it clearly indicates that problem is at user’s side. Therefore, we suggest customers to tweak their home network firewall.

[Is application on your Droplet not working ? We can make it work on port 8080.]

Conclusion

The process to open port 8080 in DigitalOcean Droplet is rather easy. However, bad firewall rules can affect connectivity to the server. Today, we saw how our Cloud Engineers open the port and correct the common problems with port 8080 connectivity.

PREVENT YOUR SERVER FROM CRASHING!

Never again lose customers to poor server speed! Let us help you.

Our server experts will monitor & maintain your server 24/7 so that it remains lightning fast and secure.

How to Open Port 8080 in Windows 10?

Are you having trouble opening port 8080 in Windows 10? Don’t worry, you’re not alone. Many people have difficulty understanding how to open ports in Windows 10, but the good news is that it’s actually quite easy. In this article, we’ll take a look at how you can open port 8080 in Windows 10, and what you need to know to get it done quickly and easily. So, if you’re ready to get your port open and get your applications running, let’s get started!

1. Open Control Panel and click on Windows Firewall.
2. Click on Advanced Settings on the left side.
3. Right-click on Inbound Rules and select New Rule.
4. Select Port and click Next.
5. Select TCP and enter the port number 8080.
6. Set the Action to Allow the connection and click Next.
7. Check all the boxes and click Next.
8. Give the rule a name and click Finish.

Source: futurecdn.net

Introduction to Opening Port 8080 in Windows 10

Port 8080 is a commonly used port for web servers, especially for LANs. It is one of the few ports that is not blocked by most firewalls, making it popular for use with web servers. In this article, we will discuss how to open port 8080 in Windows 10.

Using Command Prompt to Open Port 8080 in Windows 10

The most straightforward way to open port 8080 in Windows 10 is to use the Command Prompt. To do this, open the Command Prompt window by pressing the Windows key + X and selecting Command Prompt (Admin).

Once the Command Prompt window is open, enter the command “netsh advfirewall firewall add rule name=”Open Port 8080″ dir=in action=allow protocol=TCP localport=8080” and press Enter. This command will open port 8080 in the Windows Firewall.

To check that the port is open, use the command “netsh advfirewall firewall show rule name=”Open Port 8080″” and press Enter. This command should show that the port is open and accessible.

Using PowerShell to Open Port 8080 in Windows 10

Another way to open port 8080 in Windows 10 is to use PowerShell. To do this, open the PowerShell window by pressing the Windows key + X and selecting PowerShell (Admin).

Once the PowerShell window is open, enter the command “New-NetFirewallRule -Name “Open Port 8080” -DisplayName “Open Port 8080” -Enabled True -Direction Inbound -Action Allow -Protocol TCP -LocalPort 8080” and press Enter. This command will open port 8080 in the Windows Firewall.

To check that the port is open, use the command “Get-NetFirewallRule -Name “Open Port 8080″” and press Enter. This command should show that the port is open and accessible.

Using the Windows Firewall to Open Port 8080 in Windows 10

The last way to open port 8080 in Windows 10 is to use the Windows Firewall. To do this, open the Windows Firewall window by pressing the Windows key + X and selecting Control Panel.

Once the Control Panel window is open, select the Windows Firewall icon. In the Windows Firewall window, select the Advanced Settings link in the left-hand pane.

In the Advanced Settings window, select the Inbound Rules link in the left-hand pane. Select the New Rule link in the right-hand pane.

In the New Inbound Rule Wizard, select the Port option and click Next. In the Protocol and Ports window, select the TCP option and enter 8080 in the Specific Local Ports field.

In the Action window, select the Allow the connection option and click Next. In the Profile window, select the Domain, Private, and Public options and click Next. In the Name window, enter a name for the rule and click Finish.

Testing Port 8080 in Windows 10

Once port 8080 is open in Windows 10, it is important to test that it is working correctly. To do this, open a web browser and enter the URL “http://localhost:8080”. If the port is open, the web browser should display the content served by the web server on port 8080.

Conclusion

In this article, we have discussed how to open port 8080 in Windows 10. We have discussed three methods for doing this: using the Command Prompt, PowerShell, and the Windows Firewall. We have also discussed how to test that port 8080 is open and accessible.

Few Frequently Asked Questions

Q1. What is Port 8080?

A1. Port 8080 is an alternative port to the commonly used port 80 for accessing web pages. It is often used by web servers and applications that require more security or need to be accessed remotely. It is also commonly used for streaming media, gaming services, and for downloading files.

Q2. What is required to open Port 8080 in Windows 10?

A2. In order to open Port 8080 in Windows 10, you will need administrative privileges. You will also need to know the IP address of the device you want to connect to. Additionally, you will need to ensure that your firewall and antivirus settings allow access to the port.

Q3. How do I open Port 8080 in Windows 10?

A3. To open Port 8080 in Windows 10, you will first need to open the Windows Firewall. To do this, you can go to the Start Menu and search for “Windows Firewall” then click on it. Once the Windows Firewall is open, click on “Advanced Settings” in the left-hand side menu. Then, click on the “Inbound Rules” tab. Here, you will need to click on “New Rule” and select “Port” from the list. Then, you will need to enter the port number, which in this case is 8080. Finally, click on “Allow the Connection” and then click “OK” to finish.

Q4. How do I check if Port 8080 is open in Windows 10?

A4. To check if Port 8080 is open in Windows 10, you can use the Command Prompt. To do this, open the Start Menu and search for “Command Prompt” and then click on it. Once it is open, type “netstat -an” and press enter. This will show you a list of all open ports on your computer. If you see an entry with “:8080” listed, this means that the port is open.

Q5. What are the risks of opening Port 8080?

A5. Opening Port 8080 can increase your computer’s vulnerability to potential security threats. If the port is open, malicious actors can use it to access your computer and gain access to sensitive data. Therefore, it is important to ensure that any applications or services that use Port 8080 are properly secured.

Q6. Are there any alternatives to opening Port 8080?

A6. Yes, there are alternatives to opening Port 8080. One option is to use a different port, such as Port 8000 or 8888. Additionally, you can also use a Virtual Private Network (VPN) to securely connect to remote servers. Finally, you can also use a proxy server, which allows you to access web pages without having to open any ports on your computer.

Open Port 80 in Windows 10

If you’ve been struggling to open port 8080 in Windows 10, you can now rest easy knowing that you now have the tools and knowledge to open it. You can do so by using the Windows Firewall and the Command Prompt. With these tools, you can open port 8080 and allow applications to access the port, providing a secure and reliable connection to the internet. And if you ever have any questions, don’t hesitate to reach out to a computer expert to help you out.

open port 8080 for listening

How can I open 8080 port for listening? In normal situation, I have tomcat7 that listens on port 8080.

 sudo netstat -tanpu | grep ":8080" tcp6 0 0 . 8080 . * LISTEN 7519/java 

After that, I stop tomcat7 with sudo service tomcat7 stop . So, now 8080 port is closed. I did sudo iptables -A INPUT -p tcp —dport 8080 -j ACCEPT to open it, but the port is not listening.

sudo netstat -tanpu | grep ":8080" tcp6 0 0 127.0.0.1:8080 127.0.0.1:37064 TIME_WAIT - 

How can I open this port (8080) for listening for another application ( not tomcat)?
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asked Nov 9, 2015 at 17:34
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3 Answers 3

You are confusing two concepts. Iptables handles access control for your networking. When you accept input traffic with a destination of TCP port 8008 that you just means you are letting the internet send traffic to that port. It has no effect on what, if anything, is listening on the port.

To listen on a port you need a program set up to do that. In your original case, tomcat was that program. You stopped it so now nothing is listening on that port. To open it back up as a listener you need to start tomcat , or any other program that you want, to listen on that port. What program you select to listen on that port is entirely dependent on what service you want to provide on that port.

The iptables commands don’t affect whether or not your program is listening, it just affects whether or not traffic from the internet is allowed to talk to that program.

If you just want to open up a network port that dumps whatever is sent to it, the program you want is netcat . The command

nc -l -p 8080 

This will cause netcat to listen on port 8080 and dump whatever is sent to that port to standard output. You can redirect its output to a file if you want to save the data sent to that port. If you want anything more sophisticated than a raw data dump, you will need to determine what specific program(s) are capable of handling your data and start one of those instead.