I was updating the ssh port of an Oracle Cloud Infrastructure machine
I changed /etc/ssh/sshd_config
The port was
#Port 22
I changed it to
Port 40531
Then
restarted the sshd service systemctl restart sshd
open the port on the OCI Web
however, now I cannot connect.
ssh -vvv -p 40531 -i ~/.ssh/vm.key opc#129.xxx.xxx.xxx
OpenSSH_8.2p1, OpenSSL 1.1.1e 17 Mar 2020
debug1: Reading configuration data /etc/ssh/ssh_config
debug2: resolve_canonicalize: hostname 129.xxx.xxx.xxx is address
debug2: ssh_connect_direct
debug1: Connecting to 129.xxx.xxx.xxx [129.xxx.xxx.xxx] port 40531.
debug1: connect to address 129.xxx.xxx.xxx port 40531: Connection timed out
ssh: connect to host 129.xxx.xxx.xxx port 40531: Connection timed out
I saw a Cloud Shell but I'm not sure if it can be used to connect to the machine to perform maintenance tasks
Is there a way to connect to the VM from the web oci interface to fix the ssh issues?
I used to use a VPS service that has a web console from which you can enter to fix problems like this
is there something like this in OCI?
Note:
SELinux was disabled on the machine
if you are about to do this on your machine, remember to update the SELinux configuration prior restart the sshd service or you will be locked out, another option is to disable SELinux totally (this is what I did)
The changes above described worked well, the only thing that was causing issues on my side
(I don't really know why) is that I was connected from a VPN
After I disconnected the VPN and tried to connected again it worked
Update:
I figured out why the ssh using a different port was not working. The VPN I use is a corporate VPN which has very strict inbound and outbound rules, The VPN outbound rules were blocked by the TCP on port 40xxx.
Update:
if you are struggling with a VM you can connect using the below instruction
Creating the Instance Console Connection
Before you can connect to the serial console or VNC console, you need to create the instance console connection.
To create the console connection for an instance
Open the navigation menu. Under Core Infrastructure, go to Compute and click Instances.
Click the instance that you're interested in.
Under Resources, click Console Connection.
Click Create Console Connection.
Upload the public key (.pub) portion for the SSH key. You can browse to a public key file on your computer or paste your public key into the text box.
Click Create Console Connection.
When the console connection has been created and is available, the state changes to Active.
Thanks to #bmuthuv for the info
You can connect to Serial Console of the VM where you could get access to GRUB Menu during a Reboot operation. You can subsequently use typical Linux commands to get to Shell from Grub. You can subsequently undo anything you would like to.
Serial Console connection can be created on OCI Web Console in the Instance's page.
I am running Kali Linux on VMware. The host operating system is windows 7, and I'm using NAT for connectivity.
In my metasploit console, when I typed 'exploit' at the msf prompt,(where I am using windows/meterpreter/reverse_tcp as the payload) it showed me the error
Handler failed to bind to My IP:4444
(My IP is my external IP address.)
So in the VMware virtual network editor, I have port forwarded port 4444 of host PC to port 4444 of the virtual PC. Then I allowed inbound packets in the firewall of the host PC, for port 4444 of the host PC.
To ensure that everything is alright, I set up an apache server on the virtual PC, that serves a webpage when accessed via port 4444. The server served flawlessly when I accessed it with an external browser. Satisfied, I shut down the server.
But guess what? Metasploit console has thrown up the same error when I typed 'exploit' again in the msf prompt.
What to do now?
What did it say the reason for failing was.
I'm assuming the full error was failed to bind to port 4444 port is already in use.
You can not run a server on the same port you are trying to bind to.
The correct way to do this is to port forward through your router. Open your router settings and port forward port 4444 to your machines local ip.
I have a very strange problem with my Apache 2.4 working with Xampp 1.8.2 on Windows Server 2008 R2.
When I tried to start Apache server in XAMPP, an error message is shown:
[Apache] Problem detected!
[Apache] Port 443 in use by "Unable to open process" with PID 4!
[Apache] Apache WILL NOT start without the configured ports free!
[Apache] You need to uninstall/disable/reconfigure the blocking application
[Apache] or reconfigure Apache and the Control Panel to listen on a different port
However, the process with PID 4 is system! I've tried to restart my computer and it doesn't work.
I have installed Apache 2.4 via a tar.gz file sereral days ago, and uninstalled it. So, I don't think this behavior will cause the problem.
And here's the result using commond netstat -a -n -o | findstr 443
C:\Users\Administrator>netstat -a -n -o | findstr 443
TCP 0.0.0.0:443 0.0.0.0:0 LISTENING 4
TCP [::]:443 [::]:0 LISTENING 4
Can you tell me what to do?
Just change the sll port in httpd-ssl.conf file. It would be under C:\xampp\apache\conf\extra.
Find "443" and replace it with other values(e.g 8181), then start your apache again
I had the same problem: port-443-in-use-by-unable-to-open-process-with-pid-4
First I disabled the weather tile in Win* that apparently phones home to Redmond for updates after this showed on netstat list.
This didn't solve the problem. I looked at the post already here which mentioned VPNs, so
I went to Control Panel\Network and Internet\Network and Sharing Center and clicked on Change adapter settings
I clicked on Incoming Connections and right clicked on properties
The VPN click box at the bottom of the General tab was on, so I unchecked it
Under Users, I also unchecked a previous user I had allowed to copy some data weeks before
Then I clicked okay
Closed the control panel and restarted the XAMPP control panel
It fired right up without a problem.
Similarly, I experienced this:
Port 443 in use by "Unable to open process" with PID 6012!
When starting XAMPP Control Panel v3.2.1 for the first time.
In Task Manager I found that PID 6012 was Apache web server.
A copy of it was running in the background without the GUI,
and when I invoked the GUI it was trying to start another copy.
Killed the phantom copy and then XAMPP started up fine.
I didn't have to change any port settings.
Modify this
LocalDisk **>>** xampp **>>** apache **>>** conf **>>** httpd.conf
Line 58: Listen **80**
for this
Line 58: Listen **8080**
Modify this:
Line 220: ServerName localhost: **80**
for this
Line 220: ServerName localhost: **8080**
Modify this:
LocalDisk **>>** xampp **>>** apache **>>** conf >> extra **>>** httpd-ssl.conf
Line 36: Listen **443**
for this
Line 36: Listen **444**
Modify this:
Line 121: <VirtualHost _default_:**443**>
Line 125: ServerName www.example.com:**443**
For this
Line 121: <VirtualHost _default_:**444**>
Line 125: ServerName www.example.com:**444**
Simply run as Administrtor "xampp-control.exe"
I had the same problem. Another way to solve this problem when running XAMPP on Windows:
Open a CMD prompt and type in command:
net stop was /y
Run Dialog Box (press keys Win+R)
.. then type: services.msc
I then scrolled down to:
World Wide Web Publishing Service
Double clicked on it and clicked STOP (if this service status is Started)
3.Start Apache again with XAMPP :)
Link Ref: http://www.sitepoint.com/unblock-port-80-on-windows-run-apache/
Some process is using this port, so you can change the port that is used by xampp, to be able to use it.
For this job you have to do this:
1- Open httpd-ssl.conf in xampp\apache\conf\extra
2- Look for the line containing Listen 443
3- Change port number to anything you want. I use 4430. ex. Listen 4430.
4- Replace every 443 strings in that file with 4430.
5- Save the file.
Probably some process is using that port, i would guess you have another webserver running with ssl/tls already. You must trac down what process is using the port and shut it down. The fact that it does not help to restart your computer makes me think that you may find what you are looking for in msconfig. Try to have a look there, open prompt and write msconfig
post 443 is normaly used by secure http, => https
I have never used windows server but there could be some built in webserver that autostarts, have you ever installed another webserver?
Try use the command Netstat -a -n -o to see what process that is blocking. you can the process pid from the output.
The
Routing and RAS - service is your problem i guess look at this post
it does this, thats why its blocking:
SSTP tunneling protocol
Secure Socket Tunneling Protocol (SSTP) is a new form of virtual private networking (VPN) tunnel with features that allow traffic to pass through firewalls that block PPTP and L2TP/IPsec traffic. SSTP provides a mechanism to encapsulate PPP traffic over the SSL channel of the HTTPS protocol. The use of PPP allows support for strong authentication methods, such as EAP-TLS. The use of HTTPS means traffic will flow through TCP port 443, a port commonly used for Web access. Secure Sockets Layer (SSL) provides transport-level security with enhanced key negotiation, encryption, and integrity checking.
from tecsupport.ms
Below steps by sztupy worked for me
I went to Control Panel\Network and Internet\Network and Sharing Center and clicked on Change adapter settings
I clicked on Incoming Connections and right clicked on properties
The VPN click box at the bottom of the General tab was on, so I unchecked it
Under Users, I also unchecked a previous user I had allowed to copy some data weeks before
Then I clicked okay
Closed the control panel and restarted the XAMPP control panel
I simply went to the XAMMP config button in the XAMPP control panel GUI and clicked on Server and Port settings and I changed the SSL port value.
I had the same problem when I installed xampp on Windows 7. I installed Windows server and Web Deployment Agent Service (MsDepSvc.exe) which uses port 80. So I had an error PID 4 listening to port 80 when I ran apache.
Solution
Open task manager: (Ctrl+Shift+Esc) then find "MsDepSvc.exe" and disable it. Finally restart xampp
ref: http://www.honk.com.au/index.php/2010/10/20/windows-7-pid-4-listening-port-80-apache-cannot-star/
Here it was the "Work Folders" feature having been added on a Server 2012 R2. By default it is listening for HTTPS client requests on port 443 via the "System" process.
There is a Technet blog post explaining how to change that port number. Don't forget to add a corresponding firewall rule for your custom port and disable the existing one for port 443 though.
I got this same error and managed to fix it by closing Skype and running XAMP as Administrator, works perfectly now. So right click THE XAMP icon and click run as admin.
The port is being used by another process,
PID 4 means it is Windows System, you can open a cmd window with "super user/administrator" priviledges and write "net stop http", it will stop all the web services. Then check if it freed the port.
I had the same problem and it happened to be the "Routing and Remote Access Service". You open Services in the windows search, and then look for the specific service name. Change the startup of it to manual or automatic (whatever you decide).
Use some app like TCPView to help what port each App PID is using.
The origin of the problem seems to be Microsoft not knowing what the word disable Microsoft VPN means...
I ran task manager and looked for httpd.exe in process. Their were two of them running. I stopped one of them gone back to xampp control pannel and started apache. It worked.
I had the same problem and solved by doing following.
Go to Task Manager, click on services tab, order by pid's than if you find the related process, kill it otherwise, right click and click on show details, the process should be shown now. order by pid's than kill the related process.
I had this same problem with port 443, process id 4 and everything. For me it was not the VPN using the port, it was IIS. To fix this I opened up IIS and right clicked on my instance and stopped it. Then IIS Express(Or apache if you're using that) was able to use port 443. Hope this helps someone else.
I had a similar issue where port 443 was blocked by PID 4. After breaking my head for several hours I found the command netsh show urlacl which gave me an idea of the system process blocking the port.
To run command run cmd or windows shell in administrator mode.
netsh
http
show urlacl
I got response a which showed 443 was blocked by NT Service SSTPSvc Reserved URL
Response
https://+:443/sra_{BA195980-CD49-458b-9E23-C84EE0ADCD75}/
User: NT SERVICE\SstpSvc
Listen: Yes
Delegate: Yes
User: BUILTIN\Administrators
Listen: No
Delegate: No
User: NT AUTHORITY\SYSTEM
Listen: Yes
Delegate: Yes
With this information I followed the microsoft link to change the listening port for SSTP based vpn. https://support.microsoft.com/en-in/kb/947032
This resolved my port issue.
A simple way to fix this is to change the XAMP port to a random number.
The solution by "Mark Seagoe" worked for me too.
I got a message that "Port 443 in use by Unable to open process with PID 14508".
So i opened task manager and killed this process 14508. This was used by my previous xampp version and it was orphaned.
so no need to change any ports or anything, this is a simple two step process and it worked .
STEPS
Un-install apache(xampp) software from your windows.
Delete the xampp folder from c folder.
Delete the folder from recycle-bin to permanently delete the xampp folder
Restart your computer.
Finally install a clean copy of apache(xampp) software.
(By Engineer Rafiq Ahmad Qureshi)
qureshi.rafiq111#gmail.com
I have Apache installed on Windows 7. It's running successfully - I can connect to it from the local host. The problem is that none of the other computers on the local wireless network don't connect.
I have configured the \apache\conf\httpd.conf to "Allow from all" and to "Listen 80"
I disabled the Firewall for Port 80
Also, the command netstat -abn shows:
TCP 0.0.0.0:80 0.0.0.0: LISTENING
Can anyone think of a reason that prevents me to connect from another machine?
Try using the repair option on the firewall - sometimes the wizard there will add additional rules which resolve the issue.
I have a WCF service running on "http://localhost:12345/ServiceName". I also have a VM running under hyper-v in Windows 8 public beta. Is there any way that I can connect to this service from the VM? I cant seem to set up a bridged network connection in the hyper-v manager. An alternative would be for the WCF service to bind to the Win8 machine name or IP, but I don't know how I would find out what that endpoint is from the VM side. The WCF service can be changed in any way needed...
Any help would be much appreciated!
Many thanks,
Jon
Not sure this will work with a Windows VM, but I managed to open host's URL from inside an Ubuntu VM:
On Host disable the Firewall or add a rule to allow connections to the respective port (12345 in your case).
On VM edit /etc/hosts, replace 127.0.0.1 localhost with IP_OF_HOST localhost.
Now http://localhost:12345/ServiceName should open from inside the VM.
you can create Virtual Switch in Hyper-V(Virtual Switch Manager) Then you can connect it to your VM(right click on VM ->setting -> create Legaci network adapter -> connect abouve virtual switch to it). after that you should install intigration to Hyper-V for your OS in VM. then you can connect to your virtual switch in your VM. after that you can access internet as well. you your host machine has it. type your host machine's IP address in web browser and you can access any service in host machine
You also need to run as admin on the host machine command shell netsh http add urlacl url=http://*:12345/ user=Everyone where 12345 is the port number of your service.