0
votes
1answer
28 views

Public IP works but with DynDNS I get an ERR_CONNECTION_REFUSED

Recently I ran into a strange problem...I'm using a Raspberry with Raspbian as a public server behind a private router.I wanted to renew the expiring sslforfree.com certificate manually via HTTP. ...
0
votes
0answers
46 views

hostname -i command keeps pointing at loopback address

I recently created a new user account on my Raspberry-Pi, gave it root privileges, and deleted the default account in the OS environment. Before this I had no problem making ssh connections, now I ...
0
votes
1answer
56 views

Why I can not connect to my local server from windows?

I have the following setup at homeA machine running CentOS7 IP 192.168.15.12A laptop running Windows10 IP 192.168.15.4I have both computers running also with OpenVPN with a tunnel CentOS7 has ...
0
votes
0answers
17 views

Unbinding application layer through telnet and ssh

So I am trying to unbind an application layer from a certain port in my router, the easiest method I found to do this would be doing it by telnet with the following commands:connection bindlist...
1
vote
1answer
51 views

how to run a tunnel in the background as part of a shell script

I run these two commands all the time to connect to my rds instance on aws that's protected behind a firewall (so i tunnel through the ec2 instance) like so:command 1: open the tunnel (run on ...
0
votes
0answers
33 views

Can't ping VirtualBox (Debian) VM from (macOS) host when a static IP is set

I am using a pre-configured VirtualBox virtual machine as a base for other VMs, as per instructions from my college professor; I practise in our uni lab and everything works fine.Here are some ...
1
vote
0answers
10 views

Block outgoing traffic of cluster user

Recently I received an account in a computer cluster. It doesn't have a firewall so any kind communication can happen. However, I would like to set up a firewall for any outgoing traffic except for ...
2
votes
1answer
30 views

VirtualBox: figure out host IP from NAT mode Linux guest

I need to SSH from guest VM (Linux/Debian 9) to its host running VirtualBox on a Windows 10 machine. Network configuration: NAT. Which Linux command can I use to figure out the IP of the host from ...
0
votes
0answers
41 views

configure bitvise ssh server for port forwarding (ssh tunnel)

I remember to setup an ssh tunnel, it requires to enable the "GatewayPorts" and "AllowTcpForwarding" of sshd_config file on the linux host where ssh server is installed.I wonder do I need to do the ...
0
votes
0answers
37 views

Minimizing SSH overhead for remote command

My question is relatively simple. I'm thinking of using the developer SIM card from Hologram.io to remotely run commands on a server using SSH with ssh myserver.mydomain.tld somecommand. Since the ...
0
votes
1answer
44 views

ssh to remote server hangs, but works locally (putty / cygwin / windows 10 to linux)

I've got a linux server running openssh. I can connect to it both from the local LAN and remotely. However, there is one client (a Windows 10 laptop) that can only connect to it locally. When I try ...
0
votes
0answers
25 views

Accessing private networks RTSP stream from internet when ISP blocks inbound connections?

I have a security camera on my private network and I want to be able to view the RTSP stream over the internet. I have 4G internet so I can't initiate any connections to my private network from the ...
0
votes
2answers
52 views

raspbian SSH access refused from windows

I have Raspbian installed on Raspberry 3, I am trying to access it with SSH keys.I have generated Public and Private key, the Public_Key is inside Raspbian's file ~/.ssh/authorize_keysThe file ...
1
vote
1answer
42 views

How can I block all ports except 22,80,443 to all incoming traffic except localhost?

I want this behaviour:All outside computers can only bind to my server's ports 22(ssh), 80(http) and 443(https).However all localhost apps can bind to any port they want.I have search and this ...
0
votes
1answer
46 views

Unable to SSH to my local computer from a remote EC2 instance

I'm able to connect to my EC2 instance from my local computer, but would like to access files on my computer from EC2. I have already generated a key pair on EC2 and added the public key to my ...

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