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2
votes
1answer
21 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 ...
0
votes
0answers
83 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 ...
0
votes
3answers
51 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 ...
0
votes
1answer
37 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. ...
-1
votes
1answer
25 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 ...
0
votes
0answers
16 views

Block all outgoing ports from iptables.

I have a windows xp machine running specific application which can be access by single port (27500). there is nothing else i want to access on this machine. If i block all outgoing ports from this ...
0
votes
3answers
2k 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?
0
votes
3answers
80 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:
2
votes
1answer
47 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 ...
0
votes
1answer
48 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 ...
1
vote
1answer
126 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: ...
0
votes
2answers
97 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 ...
1
vote
1answer
41 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.
1
vote
1answer
567 views

OSX Mavericks: How can I make a webserver launch at boot and listen to port 80 without running the webserver as root?

According to Apple's launchd documentation: [launchd] Eliminates the primary reason for running daemons as root. Because launchd runs as root, it can create low-numbered TCP/IP listen sockets ...
0
votes
2answers
203 views

Unblock Utorrents ports

Recently our company has blocked all incoming ports by default. Since then I am unable to download from torrent sites. Our network engineers allowed to open the ports for me in which uTorrent is using ...
1
vote
0answers
94 views

How to block an incoming port to a router?

Recently there have been a lot of people cheating on Xbox Live using a modded Xbox and a networking service called Xbox Live Stealth which allows them to bypass the Microsoft servers so their Xbox's ...
1
vote
0answers
150 views

How to configure Jenkins to run on port 80

How can I configure Jenkins to run on the HTTP port 80, only accessible to a certain Apache virtual server only on a specific subdomain? I have one virtual server: business.com running on the server. ...
1
vote
1answer
1k views

What's up with port 8080 on my OSX box?

I thought a web server process I brought up was listening on localhost:8080, and tried to connect to it, but kept getting connection reset errors. As it turns out, I was mistaken and my process was ...
0
votes
1answer
2k views

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 ...
0
votes
0answers
524 views

Bypass blocked ports w/ proxycap or Hamachi on 80\\433

Hey guys I am behind the worst school network on the world, set up by the worst IT people on the world. The administrator already excused for all that what's going on, but he told me, he can't change ...
0
votes
0answers
109 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 ...
0
votes
2answers
594 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 ...
0
votes
2answers
117 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 ...
0
votes
0answers
184 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 ...
1
vote
2answers
476 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 ...
2
votes
0answers
113 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 ...
1
vote
1answer
754 views

FreeBSD portsnap fetch fails

This seems like a really straightforward problem, but I haven't had much luck looking around the internet so far. (A couple message boards are talking about it, but they don't offer any solutions.) ...
0
votes
3answers
584 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 ...
0
votes
1answer
1k 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 ...
0
votes
1answer
85 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
votes
1answer
114 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 ...
3
votes
1answer
598 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 ...
2
votes
1answer
280 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 ...
2
votes
0answers
451 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 ...
16
votes
2answers
42k 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
3k 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
118 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
89 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
4k 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 ...
2
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
278 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
4k 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
1k 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
108 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
163 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
223 views

Do people use dbus, pipes or ports usually for interprocess communication? [closed]

It's hard to find dbus libraries for the programming languages I've been using though the idea looks neat. Sockets are the most supported way but it also eats one of my computers ports and then I also ...
2
votes
1answer
697 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
4k 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
226 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
700 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 ...