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I'm having a hard time viewing Wildfly welcome page on port 8080 + tried apache on port 80 too, and they timeout. I can ssh to the server and using (curl localhost:8080) and (curl localhost:80) show Wildfly and apache welcome pages respectively. I have checked the Security List and Security groups and even opened ALL traffic just to see if they are causing this problem, but unfortunately the problem still there.
I'm using ubuntu 20.04 image and the UFW (firewall) is inactive so the problem isn't from there.
By default every oracle instances come with 2 firewall.
Hardware Firewall (Known as VCN)
Software Firewall (They use a very hard iptables rules and regular ufw doesn't work with that.)
The 2nd option is very annoying and also took me about 3 days to solve my problem. You can follow my following instructions and hopefully it will also fix your problem.
1st you have to open the port on the Hardware Firewall (VCN) and when you believe you have opened the port then by login to the server using ssh use this command to clear the default oracle iptables rule.
sudo iptables -F
But remember whenever you will reboot the server you will need to again run the flash command. So if you don't want to run this command every time after server reboot. Then after running the flash command run this command to save your flashed iptables rules.
sudo netfilter-persistent save
So, you will not need to run the iptables falsh command every time on the startup of the server.
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Closed 8 years ago.
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I have a unix class in school and we need to log into the server which is an address like:
something.something.ac.il
in this connection the other students had to download putty , and they use telnet too...
From what I know I can use mac terminal to connect to the school server with ssh, i'v seen some posts say to do something like: ssh username#something.something.ac.il but this docent work for me...I get an error:
ssh: connect to host something.something.ac.il port 22: Operation timed out
I know my port is 23, and we use telnet..
Please help me to log in through terminal...tnx!
I use an app called DOC that works fine that its configurations looks like this:
but i want to use terminal
According to your figure - you are connecting to a telnet server as tripleee suggested. From your mac terminal you should be able to connect using:
telnet something.something.ac.il 23
and you should get prompted for a username and password. Or you could do:
telnet -l username something.something.ac.il 23
In the odd chance that your university is using ssh from a different port (it's not that uncommon, but it would be uncommon to use a port designated to another service). You can specify the port number with ssh on the command-line:
ssh user#something.something.ac.il -p 23
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Please forgive the embarrassingly dumb newb question.
Here's the scenario:
As part of a task I have to SSH into a server and create some files. I was given the servers name (some.server.com) and an SSH key (id_rsa.username) to use. I am told to use the username and the provided key to login. Since I am relatively new to the workings of SSH this is what I have done:
I have downloaded id_rsa.username to my Downloads directory.
I have tried loggin in with
ssh -i downloads/id_rsa.username username#some.server.com
But I get ssh: connect to host some.server.com port 22: Operation timed out
I have tried using port 2222 and also 11234 ( I used that port once on a different server).
Is there anything I am doing wrong on my end? I don't have access the server admin to ask any questions so I have to try to figure this out myself.
in my case, I change the rule of ufw, and that rule ban the ssh connect
so run sudo ufw allow sshsolve the problem
"Operation timed out" means that you're not making a TCP connection to the remote server. The remote computer may be down, or there may be a firewall blocking access to the the remote server, or your local computer may not have suitable network access. It's not really possible to say what the exact problem is, based on the information here.
If you're in a corporate network, you should contact your local computer support staff for assistance. It's not unheard of for companies to block outgoing SSH from their corporate network.
Otherwise, if you need help troubleshooting network connectivity, you'd probably get better results on Superuser.
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Closed 8 years ago.
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I have a web side hosted on IIS, windows 8 os. I can access from my browser to this page via these urls:
localhost/mysamplesite
192.168.21.10/mysamplesite
I can ping my ip address like this: ping 192.168.21.10
But I can not ping to 192.168.21.10/mysamplesite this command gives error: ping request could not find host 192.168.21.10/mysamplesite
Actually have another machine (192.168.21.45) that installed apache banchmark on. I want to test request from apache banchmark to my site. So I can not send request.
ab -n 1 -c -1 192.168.21.10/mysamplesite
This does not work.
As arco444 mentioned, you can't ping a website, just a computer itself.
ping is the first thing to try when troubleshooting network connectivity problems
ping 192.168.21.10
from the remove machine.
You can also try PsPing to test for connectivity to a certain port:
psping 192.168.21.10:80
however you can not use this to check for a particular resource on your web site.
Instead you have to use a tool to test for http traffic, Apache Benchmark is one of them, depending on the OS on the remote machine, there are many other tools.
If ping works, check the firewall settings on your Windows 8 machine.
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I'm a newbie in working with remote servers and in working with FreeBSD. I want to connect to the FreeBSD running on a virtual machine on my Windows 7 in order to be able to see the files with an explorer interface and be able to copy/paste files to and from it.
I have done this before a while ago using WinSCP but that time it took me 3 days to figure out the configurations I need to make the connection and unfortunately I can't remember them now and do not have another 3 days to waste!!
In my active networks I see to VMware Network adaptors (VMware is the virtual machine I am using) which have the IPv4s: 192.168.134.1 and 192.168.80.1 and when I run "ifconfig" on my virtual FreeBSD there is no IP address (except inet 127.0.0.1). The hostname of FreeBSD is "FreeBSD1" .
WinSCP requires me to fill in a file protocol which I think should be FTP **(correct me if I'm wrong; the other options are SFTP and SCP), a port number (which it sets to 21 by default for FTP) a hostname which I have tried "FreeBSD1", "192.168.134.1" and "192.168.80.1" with my username(root) and password.
When I use the hostname "FreeBSD1" I get the error:
"The requested name is valid, but no data of the requested type was found.
Connection failed."
and for the other two I get:
"No connection could be made because the target machine actively refused it.
Connection failed."
The only thing is, as far as I remember, last time I tried (and succeeded after 3 days) "ifconfig" would show an IP which I think I used as hostname.
** For FTP it also requires an encryption which I set to no encryption. The other options are "SSL/TLS Implicit", "SSL Explicit" and "TLS Explicit".
Any help would be appreciated!
Your Windows machine does not recognize the FreeBSD1 hostname ("The requested name is valid, but no data of the requested type was found" error). So there's no point trying that further.
But it seems that the IPs work, just the FTP port 21 is not open ("No connection could be made because the target machine actively refused it" error).
I would actually not expect that FreeBSD has unencrypted FTP port opened by default. I guess you will have more luck with SFTP (SSH).
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I am able to ping the IP-address of a machine but I am unable to establish a remote desktop connection . When I try to do so it says:
Remote Desktop can't connect to the remote computer for one of these
reasons:
1) Remote access to the server is not enabled
2) The remote computer is turned off
3) The remote computer is not available on the network
Make sure the remote computer is turned on and connected to the network, and that remote access is enabled."
...any help?
If you can ping it, it means it's turned on. If you can ping it, it means the computer is available on the network... which one of the possibility remains? Only one.
Check your firewall rules. Check that VNC Server (or whatever service are you trying to use is running properly). Without other details, our answer can't be more precise.
However, this question is likely to be migrated to http://serverfault.com.
I am assuming you haven't turned off the remote computer, so let's look on the other parts of the error message, i.e. 1) and 3).
As part 1) of the message suggests: Most likely you haven't enabled remote access on the remote computer yet.
How you can enable it, is described here on the SuperUser forum.
Regarding the other reason mentioned by the error message ("2) The remote computer is not available on the network"):
The link above also describes how you can change the default listening port 3389 for RDP (remote desktop protocol) in case it is blocked by the firewall.
Please check as well, if you need a VPN tunnel to establish a remote connection. This is the case in most corporate networks (especially if you're working from home).
Last, but not least, check that your network is running as it should (VDSL or cable modem/router) - keep in mind your modem/router usually also has a firewall: check it and find out if it is blocking.
Finally, one reason could be that the hostname you entered cannot be resolved by DNS (domain name service). Check if you configured DNS correctly on both PCs - and as workaround you can use the remote PCs IP address to connect.