A port provides a location for an application to interface with the network. If there is no application that is listening at a particular point, data sent there will never be used.

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7 views

AWS Bitnami Tomcat Stack: Connection refused on :8080

I installed KIE Server and Drools Workbench following this tutorial on an AWS EC2 instance based on a ready to use Apache Tomcat stack by Bitnami. The installation went well and so I'm able to start ...
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1answer
4k views

Firewall open ports for vSphere

I need to open ports on a firewall, so that a client could access his VM console through vCenter server's Web Client. I had a look at this page about port description, but I am a little confused. I ...
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2answers
679 views

Unable to open port on Win7 machine

I'm trying to run Privoxy as a proxy on my machine. I want the browser on my Android device to access the internet through it. Now I've opened exceptions for both Privoxy and port 8118 (which is the ...
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1answer
25 views

Iptables - Remove filtered ports and close them

Here's the result of nmap command on my dedicated server from my home linux pc : Not shown: 980 closed ports PORT STATE SERVICE 20/tcp filtered ftp-data 21/tcp filtered ftp 22/tcp ...
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4answers
18k views

Windows 7 is blocking ports

I am trying to open port 80 and 3690 for HTTP and svnserve respectively (inbound for both). I have Windows Firewall off, and have tried temporarily disabling Mcafee VirusScan Enterprise, to no avail. ...
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8answers
39k views

Utility to open TCP port to listen state

Is there some basic utility to open a specific network TCP port on my machine? I need to test how my program deals with ports on listening state..
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3answers
51 views

why is my processes in task manager showing ports like 100028,103904 etc ? I know only 65535 are possible in any windows system

I am on W10 x64. This is unusual . I haven't seen port number that high .I know only 65535 are possible in any windows system. it is happening from today ( I have rebooted several times). Is it ...
-1
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1answer
20 views

What are the basic commands for ufw firewall in Ubuntu?

I want to setup ufw firewall in ubuntu. Please list some basic commands that I need to learn to operate it via termianl.
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1answer
16 views

How to test outoing traffic on random ports? (I'm on OS X)

In some situations or on some locations, I'm struggling with restricted outgoing traffic. For example a restricted LAN where outgoing traffic is only allowed on limited ports. I know how to check or ...
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1answer
15 views

Find the com port of a specific device on command prompt

I know we can find it out from the device Manager under ports. But I want to be able to get this info on command line so I can incorporate it in my python script. I looked at tools like WMI, Devcon. ...
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3answers
4k views

iptables firewall only allows internet traffic if source port of 80 is allowed

I am configuring an iptables firewall, currently just to allow http and https traffic. It is working but under a particularly strange rule - I must allow incoming connections with a source port of 80....
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0answers
5 views

Why does SoftEther VPN listen to random ports? How do I make it stop?

I have SoftEther VPN running on a Linux server with SSTP, L2TP over IPSec, VPN over DNS, and VPN over ICMP enabled, along with management via TCP port 5555. I have disabled everything else I could ...
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1answer
58 views

What happens if all of the Ephemeral Ports are used in Windows?

If all of the Ephemeral Ports are used, and another socket tried to connect to a server, will the connection fail? or will the socket be assigned a port outside the range of the Ephemeral Ports?
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1answer
51 views

What is the default range of Ephemeral Ports in Windows 7?

I used the following command to get the Ephemeral Ports range in Windows 7: netsh int ipv4 show dynamicport tcp And the result was the following: Protocol tcp Dynamic Port Range -------------------...
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0answers
24 views

IIS 8 / Windows Server 2012 R2 - PID 4 using Port 443

So I had an issue a little while ago with port 80 being used by PID 4. But I solved this issue here. But now I'm trying to setup a binding to localhost 443 in IIS and again it can't do it. Ran the ...
7
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4answers
44k views

Is there a simple way to detect ISP port blocking?

Is there a way to tell the difference between my ISP blocking traffic on certain ports and my NAT router/firewall blocking that traffic? The sites “Shields Up” and “Can you see me” show my ports ...
0
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0answers
7 views

QNAP Nas File Server outside LAN

I am trying to map my NAS as a network drive outside my LAN however I have very limited knowledge around this. I have a QNap TS-212P which is configured to port forward so I can access it's GUI ...
3
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1answer
15k views

socket.error: [Errno 10013] Port forbidden access permissions

When trying to use a Python script I get this error: socket.error: [Errno 10013] An attempt was made to access a socket in a way forbidden by its access permissions I put the post on ...
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2answers
53 views

Why DisplayPort, HDMI port etc. while USB can do the job? [closed]

I've been using HP EliteDisplay E232 connected to my hp notebook HP ZBook 15 G2 through DisplayPort for some time now. Both the monitor and the notebook has Full HD 1920X1080 resolution. I was so glad ...
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0answers
33 views

port forwarding - Transmission torrent client

I have a problem related to Transmission torrent client. Specifically on a Fedora 23 Linux distribution. My goal is to increase download speed and surfing on the internet. I found out the best way to ...
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1answer
2k views

Cannot start WebSite because port 80 is being used by W3SVC.exe

I have deverloped a website at work and we typically use port 80/443 for our websites (in development). This has worked well until today when starting the website gives me the error (IIS 7) This ...
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1answer
263 views

Block port 111 on centos 7

I am using a server with centos 7 running kvm/virtualization, I access using VNC server. Today I received an warning about my server being used to attack other server using port 111, I am completely ...
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0answers
26 views

Port translation and websphere application

I have a java application running in Websphere Application Server (WAS) on port 80 (using IBM HttP server, IHS). Now I need port 80 for other purposes on my external ip. I just setup port translation ...
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1answer
5k views

How to open a port for all users: NSA 2400

I'm trying to open up port 8332 for all users behind my firewall but can only find instructions for doing so for a single IP address. How do I make sure all my users can use a specific port? I've ...
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2answers
1k views

How can I tell if ISP is blocking outgoing ports?

1st: How can I tell if ISP is blocking ports? 2nd: How can I tell if problem is related to OS? Problem began since upgrade to Windows 10. (Business computer, hence I don't know if I have privileges)...
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1answer
22 views

How can i access remote ports other than 80 from my home network?

I am trying to access a remote website running on port 8000. From my home network i cannot (it simply times out), but i can access it from my phone's 3G network. My ISP is Bezeq International and the ...
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2answers
13k views

Can't access my IP camera over the internet

EDIT: My problem is solved, please read comments 2-5 and 8,9. I have an EasyN F3 (F3-M166) IP camera. It works fine on local IP address, but I can't access it over internet. This is what I have done ...
12
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2answers
10k views

Difference between port mapped and memory mapped access?

Can anyone explain what's the difference between port mapping and memory mapping, and what having both accomplishes? Why is there port mapped, how does it differ in structure from memory maps, and is ...
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1answer
26 views

Does port triggering from port 80 to port 80 make sense?

In troubleshooting a VoIP quality issue, tech support had me set up numerous port triggering ranges. One of the ranges was: Triggered Range: 80 to 80 Forwarded Range: 80 to 80 Based on my probably-...
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5answers
45k views

USB Ports Not Working

None of the USB ports work anymore on my HP EliteBook 2540p laptop which is running Windows 7 Pro SP1. By "not working," I mean if I try plugging in a thumbdrive or external HDD it does nothing ...
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1answer
39 views

I cannot connect to a port that is already open in my firewall

I have tried to open port 80 [root@rhel7 docker]# firewall-cmd --zone=public --add-port=80/tcp --permanent success [root@rhel7 docker]# firewall-cmd --reload success [root@rhel7 docker]# iptables-...
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1answer
14 views

HP DesignJet hardening / close ports

I am trying to close unnecesary ports at our HP designjet plotter and I still have ports 280, 8086 and 8085 open. I have switched off everyting except raw print 9100 and these three ones are still ...
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2answers
42 views

how to see which process is using which port in windows 8

I am trying to start the Tomcat server at my pc by eclipse. But it is showing the following message Several ports (8005, 8080, 8009) required by Tomcat v8.0 Server at localhost are already in use. ...
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1answer
28 views

What are the default nmap options?

Which options are used by default, when the user fires # nmap target without any explicit option? I am going to write the defaults of the three options I consider the most important. It would be ...
0
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1answer
27 views

port visible but not accessable

I have port 80 open through my router, I have disabled my firewall, and canyouseeme.org sees port 80. yet I can not navigate to my IP address which is my web server. How can my port be visible yet I ...
109
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3answers
225k views

What are CLOSE_WAIT and TIME_WAIT states?

When I do netstat -a on my Windows machine, I get a listing of the ports with one of the four states: LISTENING CLOSE_WAIT TIME_WAIT ESTABLISHED What do CLOSE_WAIT and TIME_WAIT mean/indicate?
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2answers
55 views

IPTables - Redirect traffic based on country

Is there any way how to allow TCP traffic only from specified countries on a specified port and the rest of traffic redirect to another IP/port using iptables ?
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1answer
17 views

PID 4 Using Port 80 - IIS Unable To Bind

So I've been having a problem where I can't use localhost:80 on IIS So I ran this: > netstat -ano | find "0:80" And got: TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 4 ...
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1answer
351 views

What service uses UDP port 242?

What service uses UDP port 242? According to nmap, it says that the service or protocol named "direct" uses the port, but Google search does not seem to bring me an answer.
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0answers
15 views

Commonly open ports in restricted wifi networks

Which ports except for 80 and 443 are commonly not blocked in open wifi networks? I want to set up a OpenVPN Server on such a port to get around restricted networks. I have experienced the issue that ...
13
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2answers
31k views

Are there good alternative HTTP ports rather than port 80?

I have been looking for some documentation on alternatives to port forwarding to port 80. I have a dedicated Linux machine on a home router, and apparently utilizing port 80 is not an option. Are ...
0
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1answer
38 views

Can ONLY connect to ports http:80 and https:443?

I have a problem where I can only connect to the standard http port 80 and https port 443. I can access websites perfectly and play videos and all, but when I try to connect to IP's using other ports, ...
1
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1answer
27 views

Port not open but still able to download : how does it work?

When using p2p softwares such as a torrent client or emule I am unable to open ports even if I allow them in my firewall and forward them in the NAT configuration. Even after doing those two things ...
0
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0answers
19 views

given an on-borad port PCI address, how do I know to which NIC it belongs?

Assume we have a server with 2 on-board NICs (no other NIC was inserted to any of the free expansion slots). Given a PCI address of any of the ports of the on-board NICs above, is there a way to know ...
1
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1answer
4k views

Cannot open port 8080

I'm running a VmWare with an application under JBoss starting up on port 8080. I'm able to access the app from outside the VM if the iptables are off. However, I must turn on iptables due to some ...
0
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0answers
60 views

What kind of ports are on this PCB? (Kangaroo Pocket PC)

| Overview Please refer to the teardown of the Kangaroo mini PC (below.) I am interested in finding out as much as I can about this board and the ports associated with it. Any details/specifications ...
0
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2answers
210 views

unknown open ports/services 54409 and 16808

I have a Linksys EA6400 router. Today, I have noticed in the log file some activity from multiple ip addresses on 2 ports that are open: 54409 and 16808 and I do not know what is going on there. I ...
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3answers
1k views

Configure http port to 80 from 8080

Wildfly use port 8080 by default. How to change this to 80? So that I don't have to always add colon 8080? <socket-binding-group name="standard-sockets" default-interface="public" port-offset="${...
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4answers
52 views

Multiple tabs of a browser

Since unique port numbers are assigned to each of the different processes related to network which are going on a system.So,my question is that,if multiple tabs are open in a browser then will ...
0
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1answer
72 views

Connection Refused on Host OSX 127.0.0.1:3000 for Vagrant/VirtualBox/nginx Rails App

The Rails application is running on port 3000: $ bundle exec rails server -b 0.0.0.0 => Booting Unicorn => Rails 3.2.21 application starting in development on http://0.0.0.0:3000 => Call ...