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2
votes
0answers
578 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 ...
34
votes
3answers
76k 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 ...
18
votes
5answers
5k views

Is there any difference between front and back USB ports?

I bought a flash recently, In the warranty card there was a caution saying "Always use USB ports on the back of the case" . Is there any difference between front and back ports? They are all connected ...
1
vote
1answer
136 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 ...
3
votes
1answer
98 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 ...
1
vote
4answers
5k 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 ...
3
votes
1answer
1k views

FreeBSD 9 ports: How to make quiet installations?

Just wondering how do I make ports installation - without config options (blue) window popup? Assuming that I accept default options of the installation. make install clean
0
votes
1answer
292 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.
2
votes
3answers
5k 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 ...
0
votes
2answers
2k 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
votes
1answer
112 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 ...
2
votes
0answers
180 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 ...
2
votes
1answer
1k views

What does COM Stand for in terms of Serial Ports

In terms of Serial Ports what does COM actually stand for. I can't find any reference to it. (To be clear I am not talking about Component Object Model but the Hardware Interface used in Windows ...
0
votes
2answers
5k 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 ...
0
votes
1answer
239 views

Missing hardware after reinstall

I have a Lenovo Thinkpad T61 laptop. I downloaded a security suite from my bank that caused conflicts with my previous installation of Windows XP. So, I wiped out my hard drive and re-loaded window ...
2
votes
1answer
824 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 ...
1
vote
1answer
1k 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 ...
0
votes
2answers
5k 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 ...
0
votes
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 ...
0
votes
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
2
votes
1answer
9k 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 ...
0
votes
0answers
198 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 ...
0
votes
2answers
332 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 ...
0
votes
2answers
1k 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 ...
2
votes
5answers
20k 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 ...
0
votes
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 ...
0
votes
2answers
93 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. ...
0
votes
1answer
645 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), ...
1
vote
1answer
241 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 ...
2
votes
1answer
3k 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 ...
1
vote
1answer
2k 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 ...
0
votes
1answer
356 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 ...
5
votes
1answer
12k 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 ...
1
vote
3answers
7k 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 ...
0
votes
0answers
722 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 ...
4
votes
3answers
1k 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 ...
2
votes
2answers
668 views

Keyboard partially stops working while playing games

I've recently got back into playing some PC games, however yesterday I started experiencing some weird problems. Whenever I'm inside a game, the keyboard either chooses not to work at all, or it ...
0
votes
2answers
332 views

Broken and missing prongs from usb ports

can i get replacement slots that fit in usb ports the prongs are bent and unworking on 1 port and the other came out when charging a device in port.When trying to retrieve it. the pronged plastic ...
6
votes
3answers
19k views

What is USB root hub?

What is a USB root hub? My computer shows three USB Root Hubs in Device Manager. The first USB root hubs show four ports, the second shows three ports and the third shows eight ports are available. ...
3
votes
2answers
233 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 ...
1
vote
2answers
197 views

Cross-platform implementation of GNU tools? (Preferably Java)

I'd like to have GNU tools available on multiple platforms, behaving the same. I know there are ports, like http://gnuwin32.sourceforge.net/, but they are different from what's supported by the linux ...
1
vote
3answers
11k 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 ...
4
votes
1answer
7k 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 ...
0
votes
1answer
194 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 ...
0
votes
2answers
2k 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 ...
0
votes
2answers
4k views

Use serial port (COM) as LPT1

I have a device that needs to be plugged in to LPT1 to run a legacy software. I am trying to find a workaround to get it running in a latptop (without parallel port, obviously). I have HL-340 ...
1
vote
3answers
2k views

closing open TCP ports under WinXP SP3

I must confess I have not been very security-conscious over the last few years, and I just did an NMAP scan of my computer to see how it was doing. The results amazed me. There were literally ...
0
votes
2answers
1k views

How do I change my SSH *outgoing* port on OSX?

Trying ssh -p 51685 seems to change the port that I'm trying to connect to, not my outgoing port. As does editing ssh_config. I want to change my outgoing port from 22 (which is blocked) to 51685. ...
8
votes
3answers
8k views

How to find exe listening on port?

I try with netstat -ab -p tcp -n and among the results get: TCP 0.0.0.0:47001 0.0.0.0:0 LISTENING Can not obtain ownership information I am running as administrator and ...
1
vote
1answer
7k views

How to change mysql port

I'm using wampserver. And suddenly mysql wouldn't work. I checked curports from nirsoft and it has red highlight on it. What does it mean?How do I solve this so that I could use mysql again. I'm ...