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

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Why can't Viber connect but Skype can?

I heard that Viber is a great alternative to Skype so I'm trying it out. I discover that it connects just fine on 3G but never on Wifi. On my wifi-only tablet it won't ever connect, nor on my desktop ...
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0answers
220 views

Configure wireless router to only allow web access

I have a (very common inexpensive) wireless Cisco router at the office where I work. The manager wanted to know if there's a way to configure the router to allow only web access. How would I go about ...
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2answers
2k views

How to forward external port to internal port using plink

For a penetration test where I have shell access to a computer running an old Windows, I'd like to forward port 4450 to 127.0.0.1:445 because the firewall is blocking 445 externally. I'm stuck on ...
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2answers
199 views

SSH port on Virtual Machine is closed

I want to connect to my Arch linux virtual machine from my debian(host) by ssh, but connection is refused, I scanned 22 port on Virtual Machine and its closed, How can I open this port to enable ssh ...
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0answers
379 views

Ports 3128 and 8080 exposed for 19 out of 20 devices on home LAN?

I don't think it's a bug in SoftPerfect's Network Scanner because I can get the same results using two other port scanners. Oddly, "Giga" is the only device that does not show as exposing 8080, yet ...
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2answers
971 views

Why can't nc / netcat sniff http port traffic easily?

I'm NOT looking for advice such as "try wireshark." I'm trying to understand what netcat is and isn't. When I try to listen (-l) to port 80, it says "address already in use." Can netcat not listen to ...
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0answers
139 views

Limit user bound ports to arbitrary ranges

Is it possible to allow user to bind only certain ports? For example, I was trying to achieve this: user1: can bind only on ports 4001 and 4002 user2: can bind only on ports 5001 and 5002 and so on.....
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4answers
2k views

Unknown port : Asterix port 8600?

Running nmap on my linux box, I find the following open port : 8600/tcp open asterix After searching online, I found almost no information about this service except a short description: Port ...
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1answer
2k views

Can't connect to VMWare Player from host machine

Running VMware player with Cent OS. Running a server in the virtual os and trying to connect to it from the host pc to no avail. I have tried bridged, NAT, and host-only type network connections. I am ...
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1answer
103 views

Port open, but not forwarding

I have a Buffalo WZR-1800h, and I opened port 25565 on it and forwarded it to an active server which I can connect locally to. We just got a new router and the server ran flawlessly on the other ...
2
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1answer
301 views

SSH Port closed although forwarded correctly

I'm having an issue with opening my SSH port. Here are the symptoms. Within the local network I can ssh to the machine, including both locally (ssh localhost) and from alternate computers. I have ...
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1answer
1k views

How can I check what outbound ports are allowed in a network?

On some networks (primarily corporate ones), the firewall restricts outbound connections to some port number. The allowed ports generally comprise of port 80, 11, 443, etc. Is there a way I could do ...
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1answer
445 views

I want to send email from my Debian server but My ISP block port 25

I have put private server on Debian, I would like to be able to send mail but port 25 is blocked by my ISP. I checked it by opening a telnet connection to another mail server. The good news is that I ...
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0answers
907 views

Port 53 on a Windows 7 machine is inaccessible from LAN

Installed a nice dns filter (Acrylic) on my server running Win7. Wanted all machines on the LAN to use it for name resolution. On the server NETSTAT shows Acrylic is listening on DNS port: UDP 0....
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5answers
200k views

Get a list of Open Ports in Linux

I need a Linux command to list all free open ports for use in an application lsof -i TCP| fgrep LISTEN Does not seen to be helping as the Ports it lists are not necessarily free for use. How do I ...
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1answer
155 views

Cannot SSH into ANY host (outgoing) on entire local network

I'm having a rather strange issue with my network here, and I'm hoping you guys might be able to help me out. As of recently, over the past few weeks or so, I've been noticing some strange problems ...
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1answer
154 views

How to forward urls without ports from one machine to urls with ports on another machine

I'm new to sys administration, so I play some things virtually at home. And so, I have one virtual linux with two nodejs applications running there. They listen on two different ports. Lets call the ...
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4answers
9k views

Send message to specific port on Windows cmd.exe

I'm playing with a program on desktop. It's listening on port 5060. However, I don't have anything sending to this location/host. If I open my laptop's command line, is there a way to send a ...
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1answer
337 views

Use outgoing port 80 to connect to another remote port, without root privileges

If all outgoing ports are blocked except 80, is there a way to use port 80 to connect to a remote machine's port other than 80? I do not have root privileges on the system.
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3answers
7k views

NAT vs public IP (and blocked ports)

I have a problem with my ISP. They say that they don't block any ports and I have public IP, while I think these both statements are false. Before I talk to them again (which is really tough when my ...
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2answers
3k views

FTP connection between two Windows Machines

I have two Windows machines, both are running Windows 8 Release Preview. One of them is connected to a network via the ethernet cable, the other is connected to the network via wifi. IP address of ...
0
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1answer
121 views

Complicated use of VPS to access internal system, using SSH tunnels

I am not exactly sure what the best solution would be for this problem, but I have a VPS with 3 ips. I have a unix system behind a home router with no ports forwarded. I want to be able to access ...
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0answers
217 views

Generate random port traffic windows

Without installing any third party software is there a way to generate random traffic for a port of choice in Windows 2003? I'm testing a few Port Forwards and just need some random test data. I'd ...
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2answers
7k views

How can I tell what outbound ports are blocked (Windows 2003)?

I'm trying to troubleshoot a custom application that lives inside of a firewall on an enterprise network running Windows 2003 server. Our application uses PHP/cURL to send XML data to a publicly ...
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1answer
1k views

port 3389 for RDP is listened to by vchost.exe

how do I get port 3389 for RDP to not be listened to by vchost.exe on win7-64 bit? I used a port checker and it says that that port is locked by another program. so I did "cmd\netstat -ano" and the ...
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1answer
2k views

Difference between port types

What is the difference between the three port types; Well-known, Registered and Dynamic? Namely, the difference in usage and port numbers associated with each category. Currently I understand the ...
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2answers
9k views

Which alternative port can I use for RDP?

The default port for Remote Desktop is 3389. I would like to change the port to another port in order to thwart a brute force attack that is occuring on my machine. What port number could I use? I ...
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1answer
1k views

Simple way to set up port knocking on Linux?

There are well known benefits of Port Knocking utilities when utilized in combination with firewall IP table modification. Port Knocking is best used to provide an additional layer of security over ...
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0answers
1k views

How to close all unused ports

Whenever i do nmap on my system it shows most of the ports open.How to make only default ports open.I am using Windows Vista with Service Pack 2
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1answer
15k views

How can I disable any TCP/IP port on a Windows 7 machine?

I need help on finding out how to disable any particular TCP/IP port on a Windows box whenever a need arises. I googled before posting the question and I got links to articles mentioning only ...
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0answers
203 views

No access to FTP sites

I am having a weird issue that I can only explain as a possible "port 21 hijack". For some reason, I cannot connect to any ftp sites. The original one I tried was ftp.maltedmedia.com. Filezilla couldn'...
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2answers
348 views

Get all public files with wget

There's a host and a port(with TCP support) on which http service is running. Simple wget host:port doesn't return anything. Is it possible to get a list of all accessible files(html or txt) on ...
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2answers
2k views

Dell XPS randomly freezes – Mouse, keyboard and USB ports lose power until reboot

I have a Dell XPS 4435MT desktop. It randomly freezes – and it happens shortly after startup, mostly less than 10 minutes. When it freezes, mouse and keyboard have no power anymore. The USB ports on ...
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5answers
26k views

How do I limit packet capturing in Wireshark to only a specific protocol?

I would like to listen to HTTP traffic on port 8080. When I start capturing packets in Wireshark, it's flooded by packets using the SSDP protocol on port 1900. I would like to limit the packet ...
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3answers
3k views

How can I put the Windows XP firewall into an “allow all” port configuration and only block certain ports?

Without going into too much detail on why I need to do this, I'm trying to put the Windows XP Firewall into an allow all ports configuration, and only deny certain ports I have in a list. I've ...
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2answers
105 views

http ftp imap smtp and some additional ports not working

I'm writing this using a 3G connection on my phone. At lunch time yesterday, the ports above and a few additional other ports like 40001 and 4089 stopped working on my internet connection at work. ...
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1answer
833 views

OSX: how to check what is taking ports or sockets

I am having trouble with L2TP/IPSec on my OS X 10.7.2 machine and I was wondering what is the best way to figure out which process is taking particular sockets or ports; My related posts (below), ...
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1answer
260 views

OS X: how to figure out what prevents L2TP/IPSec from running correctly

It seems that an old installation of Cisco Anyconnect prevents the OS X built-in L2TP/IPSec client from running (I posted a question here: OS X 10.7, can't log into any L2TP VPN server, but didn't ...
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1answer
5k views

Stopping Apache from listening in port 443?

Pretty self-explanatory. Is there any way I can make Apache stop listening in port 443 (Https). So that it only listens on port 80 (http)? I'm working on a Windows 7 PC. Edit 1: I installed Apache ...
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1answer
3k views

Can't free up port 80, no matter what I try

Trying to get WAMP working again, and testing to see that the Apache server is working. It keep saying port 80 is being used by Server: Microsoft-HTTPAPI/2.0 - I've removed IIS, I've removed SQL ...
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1answer
508 views

Does a webserver need to have outgoing port 80 blocked for security reasons?

At work, we've got Windows Server 2008 running. I've set up XAMPP, and a few websites - everything works perfectly. However, outgoing port 80 is blocked in the firewall for 'security' reasons. I was ...
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1answer
15k views

How can I open listen ports on an Amazon EC2 instance?

I'm using Amazon EC2 micro instance with Ubuntu 11.04 on it (official AMI by Canonical). I have created a new security group for this instance: Inbound: 22 (SSH) 0.0.0.0/0 80 (HTTP) 0.0.0.0/0 ...
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3answers
16k views

What is the range of ports that is usually used in the traceroute command?

I wanted to know if there is a range which is usually used for destination port that is used in traceroute command. Like the starting address for destination port is 33434. but is there some standard ...
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0answers
1k views

lighttpd cant bind port permission denied

I installed lighttpd, tried to run it service lighttpd start and got error like the one i post below. Please dont give me that crap about needing root (because I am root) or about ports higher than ...
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3answers
2k views

Why don't p2p connections need open ports?

I mean, if someone is downloading a file from me, doesn't that means that I'm the host and he is connecting to me? Or am I connecting to him? Either way one of us need an open port, no? I don't ...
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2answers
238 views

Blocking ports with iptables

I have a server with multiple interfaces (IPs). I'd like to block all ports on one of the IPs (I don't want to change anything for other IPs/interfaces), but allow outgoing connections from it. For ...
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3answers
17k views

Ports for NAT'ed Windows share

Simple question: I have a NATed Linux at home that hosts a couple of samba shares. What Ports should I forward from the router to the Linux box so as to be able to access those shares from the ...
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1answer
9k views

How can I disable these Windows-specific ports?

Let's see what ports are opened by which processes, taking those that are specific to Windows itself: C:\Windows\system32>netstat -anb Active Connections Proto Local Address Foreign ...
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1answer
207 views

VPN Incoming Ports

For the past few years, I have been stuck with mobile broadband connections, which block all incoming traffic for all ports. This has made it impossible for me to do things like play multiplayer games ...
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2answers
3k views

How do I open a port in Ubuntu when

My wireless is listening on 192.168.1.4 SSH is listening on 192.168.1.4:22 No firewall is running TCP wrappers are not configured, I can connect wirelessly to the Internet My kernel logs show that I'm ...