Use this tag for Ethernet ports. E.g. IP:port.

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What is the master process running on port 465?

I want to close non used ports in my server, after doing a port scan I found service urd running on port 465. Running lsof I see a "master" process running on that port (also 25, 587,etc..). Question ...
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2answers
28 views

Display port to DVI or Display port to HDMI, or VGA

I know that there are a lot of questions about different ports for connecting a monitor, but i have one that i think is unanswered elsewhere. I have a laptop with only a display port and VGA output. ...
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6 views

openvpn blocking ports 80, 21

I am trying to get VPN running on my VPS. I have installed openvpn using a openvpn-install script from https://github.com/Nyr/openvpn-install and now I am having troubles accessing my server. Ports 80 ...
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1answer
16 views

Opening two ports

I have 2 ip cameras, one is operating on port 8021 the other I would like to operate on 8022 I have successfully opened a port forwarding rule for port 8021 and can see my camera output from outside ...
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0answers
14 views

Ports still refusing connection even though they're forwarded and running on VPS

I recently asked a question regarding why my connections were refusing and I thought it was answered but it seemed not. I have a Windows 2012 VPS and I have a MySQL service running through UniServer +...
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1answer
30 views

How can a VPN connection be maintained after closing its port?

Consider a VPN server with its ports closed using port knocking to open ports only upon a successful knock sequence. When a closed port is opened up using port knocking, and then a VPN connection is ...
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1answer
43 views

Firewall configuration

ALL, I used to be a happy user of ZoneAlarm. However recently I needed to open a port on one of my machine (Windows 8.1, port 1433 for SQL Server) and I found out that this is apparently an ...
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3answers
123 views

Why do computers have 65,535 TCP ports? [closed]

Why do computers have 65,535 TCP ports? Where does this number come from? What does it represent?
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1answer
137 views

how do i fixed this “Ports are being used. Please change ports numbers.” in samsung all in one security system?

I have a samsung all in one security camera system and I had set up my camera system online and it was working perfectly almost a week. One day i wasn't able to view my camera online so just checked ...
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1answer
23 views

DrayTek Vigor 2830 open port issue

We're using a Vigor2830 for routing VoIP/SIP traffic. One of the ports required to be open is 5090 for TCP/UDP. Going into the open ports section of the Vigor menu we have opened all the ports ...
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1answer
57 views

Port 2105 Open on Network

After a long time of worrying about my network being secure and finally understanding the basic job of the ports I would see open. I recently noticed port 2103 Zephyr-clt and port 2105 eklogin open on ...
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10 views

Port blocking on client machines

Is it possible to block specific ports, in this case 80 and 443 for specific client machines. I am using windows server 2012 as a domain controller and have a group of clients that I want to be denied ...
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0answers
30 views

Prioritizing port 80 on a shared network

I share my internet connection with my entire town of about 1000 people. This makes the connection very slow when trying to browse the web (youtube videos takes forever to load on 144p). When ...
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2answers
2k views

What is another use for port 8080/8443 other than a proxy?

I see alot of servers with port 8080 open. Most times I am able to connect to the proxy server, but the majority are unable to make requests outside the network, or internally. What is the purpose of ...
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1answer
45 views

how to block access to all ports except certain ones in Windows? Settings locked down by admins [closed]

I want to block all ports on my computer except ones used by applications that I use, blacklisting anything else. Firewall settings are locked down and I need access to a portable application. Minimal ...
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0answers
261 views

Trying to block Agar.io android app connection on wifi

I want to block access to Agar.io completely from android devices in the house, my internet is through virgin media with a SuperHub, I've played with port blocking(ports 443 and 1501-1551) and domain ...
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1answer
143 views

Incoming connections to Skype in 50656 and 45623 ports

I've seen many attemps connections from different and unknown IP's to my mac computers (two different Macs) to 45623 and 50656 ports. Little Snitch says it's trying to connect to Skype but I can't ...
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12 views

Raspberry IP email on boot bypass

I have configured my Raspberry Pi2 B+ to send an email through SMTPS (smtp.gmail.com:587) after the boot with the IP address of eth0 and wlan0. So Usually the eth0 will obtain an IP address by the ...
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1answer
18 views

How is individual service identified from multiple services on a single machine in port forwarding

Suppose I have a router with external ip address as 123.123.123.123 and within that router I have 5 devices connected one of them being a server which has been assigned a private ip address as 192.168....
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67 views

Open TCP port 5223 while using blackVPN

I am using blackVPN's OpenVPN application on OS X. I cannot send/receive data through OS X's messages app because I believe TCP port 5223 is being blocked. How can I open this port while using VPN?
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23 views

Cannot connect to my home web server from an external computer

I can connect to my home web server (it's a aquarium controller) from an external computer. I can easily connect using my own desktop by entering my modems external IP and the port I have configured ...
1
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1answer
374 views

How we can open the filtered port again?

I had a root access from a Server over SSH on 2200 port but, recently I can not connect to it ,so after checking via nmap turns out the port is filtered by admin or someone . Host is up (0.011s ...
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0answers
23 views

(Moved from Security) Can the windows Remote Procedure Call subsystem be modified from the default without causing Windows 8/8.1/10 to break?

This is a question that personally as a security professional has bugged me for a long time. So, a default Windows installation, from XP up to 10, typically has a few services listening on the quad-...
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3answers
99 views

So what does /24 have to do with 255 in hosts IP addresses?

Quote: For example, 192.168.10.0/24 would scan the 256 hosts between 192.168.10.0 (binary: 11000000 10101000 00001010 00000000) and 192.168.10.255 (binary: 11000000 10101000 00001010 11111111) ...
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73 views

A port is supposedly being listened upon but lsof does not see it

I am unable to start the datanode on my mac because some process is bound to port 50020: $netstat -an | grep 50020 tcp4 0 0 10.246.244.94.50020 17.172.232.9.5223 ESTABLISHED ...
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1answer
119 views

How to find Listen and Open ports in Linux.? [duplicate]

I want to list Listen ports and Established ports and unused activated ports. I need to know commands for this..?
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19 views

Is there a light exe / sniffer to ensure that certain traffic is traveling over intended ports to validate vpn/ssh settings?

I'm using ssh and split-tunneling vpn and I'd like to get a log of which traffic is sent over which ports. Is there a simple software to do this? Is there a way to easily show this over wireshark (...
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107 views

Block stealth ports Apple AirPort Extreme

Is it possible to stealth ports, block ports on Apple AirPort Extreme, or does anyone no terminal to close ports for Yosemite latest update installed. Shields up! doesn't stealth my ports! Thank you.
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1answer
80 views

Not able to login to Tuleap after full installation due to TCP IP port configuration

Not able to login to Tuleap after full installation, as all the ports are in listen mode and 9091 port is not visible in ports.How to over come this and solve. With IP address we are getting tuleap ...
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1answer
247 views

Too many open ports in Debian 8

The IT department has given me 3 virtual servers with Debian 8 for my area, which I will manage (but they have some monitoring tools). Starting Nmap 6.40 ( http://nmap.org ) at 2015-05-11 13:33 ART ...
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2answers
624 views

Unable to navigate to localhost (or 127.0.0.1) [closed]

This question should have been answered here, but I had to ask again because the resolution was inconclusive. I am trying to configure my Tomcat's server.xml to work on TCP 8080 port. But it's always ...
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1answer
41 views

How to know who is knocking on the door (or port)?

Having a Linux server with only one port open 22, how can I log attempts to connect to any other port? They are closed, but I'd still want to know.
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1answer
201 views

Can't Access Port 8080 on Public Servers

I have a slightly weird problem that I can't really understand. A lot of people host their Tomcat services, such as Geoserver, on port 8080, but when I try to access these from my browser in my ...
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1answer
21 views

What keeps ports 32003 and 25419 open on my Ubuntu 14?

I did a netstat on udp ports and found a service on port 32003 and one at 25419. What are they , how can I kill them at startup if they have no use? http://i.imgur.com/fo7atla.png
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1answer
167 views

Are desktop PC ports less durable in terms of mating cycles than laptop ports?

I have an HP EliteDesk 800 Mini PC, and I am using it like a laptop in the sense that I take it to and from work every day. At home and at work I have a power adapter, monitor, keyboard, and mouse ...
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54 views

Ports not opening correctly

I am trying to open up ports to run a program but it won't work. I am trying to open up port 80 for testing, but even that didn't work. Here are the steps I'm going through. Open windows firewall, ...
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215 views

How do I properly test which ports are open?

My dormitory's internet connection is protected by SecureW2. This means that I have to install SecureW2 client on my computer and it won't let me in unless my username and password are correct. This ...
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627 views

Port forward not working for accessing Tomcat

I have an app running locally on Tomcat that I can access using : http://192.168.192.24:8080/findit/table.html However when I use : http://mypublic-ip-address:8080/findit/table.html I receive ...
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1answer
41 views

What are the dangers of unblocking ports to remotely connect to a network?

I am trying to create something like a cloud where I will be able to connect to a device from other networks, apart from my local one. In order to do that my provider must unblock some ports... My ...
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567 views

How to figure what is blocking ports

I have opened the follows ports in the router config TCP 5242 4244 UDP 5243 9785 But these still remain unreachables. I have also tried to disable Comodo firewall without success. Is there a way ...
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3answers
69 views

Why must we supply a port number in addition to an IP when sending a request?

I have a decent understanding of the practical use of ports and how they work. However, I have a few questions I would like to clear up. What happens if we send a request without specifying a port ...
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1answer
124 views

Is there a way to check if wireless network allows ssh connection?

I am at the public library currently using a mac book and I am trying to SSH into my server. I am normally able to do so in other places that are not on my local network, but I am not able to here. ...
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1answer
37 views

Port Forwarding Issue

I am confused over some issues with ports and port forwardings. I have my own small datacenter running from my home. I have multiple web servers exchange server and all. I have setup port ...
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3answers
44k views

Can I use another port other than 443 for SSL communication?

I have an application that communicates via SSL, however, Port 443 is already in use by an IIS instance on that same server. Can I use another port other than 443 for SSL communication?
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3answers
349 views

How do I close remote ports?

I was wondering how web sites detect open ports on my network, like the Server Port Test on whatsmyip.org, and how I can close these open ports (e.g. port 22 and 23)? I'm getting these results:
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1answer
101 views

Help with iptables

I recently installed Oracle Linux 6 on a home server, and I've been having trouble with allowing ports past the firewall (iptables). I've tried adding ports with the command iptables -I INPUT -p tcp -...
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1answer
154 views

in ProcessExplorer what is the difference between remote address = 127.0.0.1:0 and *:*?

In Process Explorer when I select a process click on "TCP/IP" tab it shows 5 columns: Protocol, Local Address, Remote Address, State, Service. Under Remote Address, I often see entries such as 127.0.0....
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1answer
269 views

Open Ports - Strange Errors

I was doing an open port check 1-65535 on my external IP from an online tool and I could see 5 open ports! When I opened one of them in my browser myip:3541 and I could see only this response: ...
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2answers
146 views

How do I tell which application is using which port?

I have been looking at netstat output on a MacBook. I noticed that some applications enable you to specify which port it uses. For example, utorrent allows you to do that. I chose a port 55743 then ...
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1answer
153 views

How to customize flash player ports

Is there a way to change flash player ports? I've already searched but without success, all the tutorials usually refer to flash player server.