Im trying to create an environment with raspberry pi and informix db.
So when i connect with ssh, i can start up a server, connect in db and everything else, but when a try do connect from a remote client, in this case my laptop in the same network, the connection is refused.
I trying remote connect with DBeaver on linux mint to informixdb on raspbian.
Is my first experience with this configurations
I found the answer on compgroups. It seems the default port 9088 is mapped for tcp6. Adding a new port in onconfig, sqlhosts and services, it can get the right protocol and starts work.netstat -an | grep tcp
Thanks
Related
I would like to connect to an Oracle database hosted on a remote box using Oracle SQL Developer. I am able to create a standard connection BUT I have to be connected to a VPN for security reasons. I want to bypass this vpn.
I do this all the time with normal ssh connections. There is one machine (gateway) on my company network than can be accessed outside the network (no vpn). From gateway, I can connect to any machine on our network. I would like to connect to the database hosted on machine (dbmachine) on the network (which cannot be accessed without being on the vpn unless I am first connected to the gateway).
This seems to be a common issue because I was easily able to bake this functionality seamlessly into my ssh config. Example:
Host gateway
HostName gateway.company.org
User marc
Host dbmachine
HostName dbmachine.company.org
User marc
ProxyJump gateway
Host exampleMachine
HostName exampleMachine.company.org
User marc
ProxyJump gateway
By using ProxyJump, I am able to type ssh dbmachine to seamlessly connect to dbmachine or ssh exampleMachine to seamlessly connect to exampleMachine. I want to do a similar jumping technique with Oracle SQL Developer. How can I connect to the database on dbmachine from Oracle SQL Developer?
I'm not sure what port the db is running on dbmachine, but I can access it though sqlplus when I'm logged into the box.
The answer is to create an SSH Tunnle:
ssh -L 1521:localhost:1521 -N -f dbmachine
This will forward all traffic on localhost:1521 to dbmachine:1521 (where the database is running). It will respect the user's configuration so you do not have to setup two tunnles.
-N Will not switch to remote shell
-f Requests ssh to go to background just before command execution
I'm not sure if there's a better solution that is configurable directly in a database client, but this works for me on Arch Linux.
I used sudo raspi-config, went into the advanced options, enabled ssh and tried with and without rebooting after this step, I am still getting Network Error: Connection refused
when trying to establish a connection via PuTTY
EDIT: It seems like the device isn't even connected to the network, even though I use DLAN to get it connected directly to the broadband router, the same DLAN I use to connect my primary desktop.
Have you checked your firewall?
I know that this is an old question, but I run into this same problem today when connecting to raspberry with Putty. In my case, the problem was that I used wlan instead of ethernet cable, and hostname -i gave the wrong Ip address.
I then run ifconfig, and realized that there was different Ip address for wlan. With that Ip address, Putty and Filezilla connected right away to my raspberry.
Hope that this will help someone.
I want to use R Server constructed on a Ubuntu system on the Alibaba Cloud to do some elastic computing. The data is on the office computer, which has a firewall to prevent information leaking. I want to update the data to the cloud server for analysis.
I tried WINscp. It won't connect to the server (Connection timeout). I also tried PuTTY, which didn't work, either.
Could this be because of the Firewall?
Since you mentioned that your office has firewall rules in place to prevent data leaking, it is possible that your office firewall has blocked outbound traffic to port 22 (SSH), which is required to connect to your Ubuntu ECS instance running on Alibaba Cloud.
You should try to connect to your Ubuntu ECS instance from other locations without your office's firewall and see if it works.
Alibaba Cloud's ECS instance allows in-bound traffic access to port 22 by default based on their product page as below.
Source: Default security group rules
The security group created by
the system has only rules for access over all ICMP ports, TCP Port 22,
and TCP Port 3389, of which,
All ICMP ports are used by network devices, including routers, to send
error messages and operational information.
TCP Port 22 is used to connect to a Linux instance using SSH.
TCP Port 3389 is used to remotely connect to a Windows instance using Windows Remote Desktop.
Has anybody tried out virtual machines in the UK area of bluemix?
I am able to start a vm but get an timeout when i try so connect to the vm via ssh.
I used the std Debian image that can be choosen on setup time and injected an ssh key for connecting. The security group I used was allow_all.
When trying to ping or to connect via ssh directly or the openstack cli the connection times out.
regards
Johannes
There was a bug in the setup of the vm, so I actually had no chance to access it.
I have got a VM in Google Compute Engine. And I want to use this VM using RDP. I have enabled the firewall settings to accept RDP(TCP:3389). This works fine when I connect to it using a LAN connection. But when I try to connect to this VM using an ICMP connection(ICMP tunneling software), it shows an error that couldn't connect to the remote computer for one of these reasons:
1. Remote access to server is not enabled.
2. The remote computer is turned on.
3. The remote computer is not available on the network.
But my current configuration works fine when I connect over a LAN. I want to use RDP using an ICMP tunnel. Is there a way to use RDP using ICMP?
Ping also works when trying to connect through ICMP.