I installed Grafana in an AWS linux machine. Post that i started Grafana server also which is there in bin folder. But still i am unable to access Grafana UI from a web browser. I am using below URL to access Grafana UI
http://52.209.135.66:8000/
I tried to check connectivity from terminal by using below command
wget http://52.209.135.66:8000/
the output of the command is
--2020-07-22 17:40:12-- http://52.209.135.66:8000/
Connecting to 52.209.135.66:8000... failed: Connection timed out.
Retrying.
--2020-07-22 17:42:22-- (try: 2) http://52.209.135.66:8000/
Connecting to 52.209.135.66:8000...
As suggested in few online articles i executed below command to remove the firewall settings, still it is not accessible
sudo iptables -F
Can someone please help me in resolving this issue?
Check the following areas:
Inbound Rule for the Security Groups attached to your instance: they must allow for port 8000 coming from 0.0.0.0/0
Custom Network ACLs associated with the VPC subnet where your instance is provisioned (Default ACL should allow all traffic). Ensure either all traffic is allowed or there are rules that allow inbound traffic on port 8000 from 0.0.0.0/0 AND outbound traffic to anywhere on the peripheral ports.
The instance is in a public subnet: that is, there's route from the subnet to the Internet Gateway.
The IP address is associated with your instance
Related
How we should open port 22 on aks loopback IP.
We are trying to do telnet on loopback IP using port 22 which is working fine on any Linux VM but on AKS we are getting the error Connection closed.
• Note that AKS clusters have unrestricted outbound (egress) internet access. This level of network access allows nodes and services you run to access external resources as needed. If you wish to restrict egress traffic, a limited number of ports and addresses must be accessible to maintain healthy cluster maintenance tasks. The simplest solution to securing outbound addresses lies in the use of a firewall device that can control outbound traffic based on domain names. Azure Firewall, for example, can restrict outbound HTTP and HTTPS traffic based on the FQDN of the destination. You can also configure your preferred firewall and security rules to allow these required ports and addresses.
Thus, you can configure an inbound rule and an outbound rule to allow traffic on port 22, i.e., SSH for destination IP address as 127.0.0.1 (Loopback IP address). To do so, kindly refer to the documentation link below: -
https://learn.microsoft.com/en-us/azure/aks/limit-egress-traffic#adding-firewall-rules
According to the above link, you must deploy a firewall and create a UDR hop to Azure firewall and associate it to AKS. Thus, in this way, if you configure the Azure firewall with the AKS cluster, you will be able to control the ingress and egress port traffic.
when I ran $ git clone https://github.com/aliscie/autodox it took too long to respond to this command and then it shows fatal: unable to access 'https://github.com/<whatever>': Failed to connect to github.com port 443: Connection timed out. Also, when I tried sudo yum install docker I got the same issue but different error message
https://amazonlinux-2-repos-eu-west-1.s3.eu-west-1.amazonaws.com/2/extras/docker/stable/x86_64/9273ea3ff10ea479755a952f9b7816de5808a0
9ab6d2cf7c7f56ea422962d7ac/repodata/repomd.xml?instance_id=i-0baa228b430689a3b®ion=eu-west-1: [Errno 12] Timeout on https://amazon
linux-2-repos-eu-west-1.s3.eu-west-1.amazonaws.com/2/extras/docker/stable/x86_64/9273ea3ff10ea479755a952f9b7816de5808a09ab6d2cf7c7f56
ea422962d7ac/repodata/repomd.xml?instance_id=i-0baa228b430689a3b®ion=eu-west-1: (28, 'Connection timed out after 5000 milliseconds
')
Trying other mirror.
I tried
aws configure but I did not provide AWS Access Key ID because I don't
I tried to flow the article Troubleshoot EC2 instance internet gateway but it was useless for me
in security groups I setted Inbound and Outbound rules to allow all trafices anywhere.
In general, Security groups should be configured with:
Inbound rules that permit access to the desired ports (eg port 80 for HTTP, port 443 for HTTPS, port 22 for SSH) from as few IP addresses as possible. For example, HTTP would be open to the Internet (0.0.0.0/0) but while SSH should be open only to your IP address
Outbound rules that "Allow All" outbound access because you can typically trust what is running on your own instance
In general, Network Access Control Lists (NACLS) should never be changed from their default "Allow All" state unless you have a very specific networking requirement (eg creating a DMZ). Security Groups are sufficient for controlling access.
I created a web application and mounted it on an EC2 Windows instance.
Since it is created with Node.js Express and I didn't touch anything about localhost or port stuffs,
it is being listened on the port 3000 on npm start.
After I did npm start on the EC2 instance, then I can access it by "localhost:3000" within the EC2.
But when I try to access it from outside the EC2 with its public IP, like ip_address:3000, it keeps returning connection timed out error.
As I wrote in the title, I added a custom TCP security group that makes the instance opened for any IP addresses and with port 3000 but it still doesn't work.
What can I do? What am I possibly missing?
Thanks in advance.
Couple of things could be going wrong here.
Firstly - confirm your web application is actually running from within the instance.To do this on any recent windows in powershell: Invoke-WebRequest http://localhost:3000.
Secondly - confirm the security group on the instance allows incoming traffic for your designated port - HTTP(80) or HTTPS(443).
Thirdly - since you mentioned your instance has a Public IPv4 address, it must be located within a VPC and a Subnet. Navigate to the VPC service within the AWS Console and have a look at the Network ACL for that subnet. It's possibly denying all incoming traffic - rendering your security group settings unused.
If you're unsure on whether the subnet is blocking incoming traffic or not, have a look at these docs.
I have a Linux VM on azure, which I can access using SSH without any issues. I needed access to another port(lets say 7077) from outside, and here is what i have done so far, but unable to establish connectivity
Created an inbound rule from the networking settings, it created the rule on the Network security Group attached to the network interface.
Added a new Network Security Group, attached it to the Subnet
If I do a netcat request on port 22, i get a successful connectivity, but for the port 7077 I get connection refused.
Also with IP flow verification passes for the port
Any pointer would be helpful.
You need to allow that same port in the firewall settings of the VM. The OS itself is what is refusing the connection suggesting you have not setup any firewall rules to allow that port.
Try adding a allow rule in the firewall settings and see if you can reach that port.
https://www.digitalocean.com/community/tutorials/how-to-list-and-delete-iptables-firewall-rules
http://www.thegeekstuff.com/2011/02/iptables-add-rule/
Ubuntu 17.04
https://help.ubuntu.com/lts/serverguide/firewall.html
I am new to this Aws security to deploy in amazon webservice.
When i restrict security groups with some IP address, my application runs dead slow or it may not run also, thats the reason i am getting connection time out when i try to call webservice which is deployed in aws. When i open the IP address restriction in Security groups it works fine.
How to configure my AWS using security groups. so that my application is accessible to only to some restricted networks.
Please help me put on this.
Below are the my security group details
INBOUND
Type Protocol Port range Source
MYSQL TCP 3306 X.X.X.X/X
SSH TCP 22 X.X.X.X/X
HTTP TCP 80 X.X.X.X/X
OUBOUND
Type Protocol Port range Source
MYSQL TCP 3306 0.0.0.0/0
SSH TCP 22 0.0.0.0/0
HTTP TCP 80 0.0.0.0/0
i am using hibernate for DB connection from my web application. But everytime i am getting connection timeout with the above security group. but if i remove the IP address restrictions it works fine.
Note: DB connection works fine from mysql workbench
<property name="hibernate.connection.url">jdbc:mysql://schemaname.amazonDBInsatnce:3306/test</property>
Security Groups will not "slow down" access to an Amazon EC2 instance. They are used to determine which ports are open to a given range of IP addresses. Either the traffic is allowed through, or it is not.
Security Groups can be defined for Inbound and Outbound traffic. By default, all Inbound traffic is denied and all Outbound traffic is permitted.
It is possible that your application is trying to access some external service and is timing-out, hence causing delays. Permitted all Outbound traffic is usually acceptable, so try that first and see if your application performs better.
Also, check the log files that your application is producing to see if any errors are being generated, which will give you a hint as to what might be happening.