I have been trying to connect 54.255.140.142:3000 using Socket.IO.
I tried to open port using iptables -A INPUT -p tcp --dport 3000 -j ACCEPT command.
It's giving error as "Site cannot be reached"
Check if the port 3000 is open or closed.
Related
I'm having issues connecting to my AWS EC2 Server holding a MySQL Server.
Here's my Response from mysqli_connect
p#xxx.com [~/app]# php checkmysqlremote.php
Error: Unable to connect to MySQL.
Debugging errno: 2002
Debugging error: Connection refused
Here's my netstat -tuplen on the EC2 Server containing the MySQL Server
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 999 20299 1378/mysqld
As you can see its binding to the 0.0.0.0 address correctly.
I enabled the 3306 port in inbound rules for EC2.
on the server making the request handshake, I ran:
curl -s example.com:3306 >/dev/null && echo Success. || echo Fail.
which resulted in Fail.
I also ran it on the local server instance and it responded with Success.
I also ran nmap on the server making the handshake,
nmap -p 3306 example.com
Nmap scan report for example.com (1.1.1.1)
Host is up (0.048s latency).
PORT STATE SERVICE
3306/tcp filtered mysql
Nmap done: 1 IP address (1 host up) scanned in 2.03 seconds
Lastly, I tried adding the following rules in iptables:
iptables -A INPUT -i eth0 -s "example.com" -p tcp --destination-port 3306 -j ACCEPT
and
sudo iptables -I INPUT -i eth0 -p tcp -m tcp --dport 3306 -j ACCEPT
I don't know what to do at this point.
UPDATE
I tried pinging the EC2 server from the remote server and it did not return anything. At this point i think the issue is with EC2.
Try adding the follwing GRANT to your user:
GRANT ALL PRIVILEGES ON *.* TO 'user'#'ipadress'
Sounds like the port might not be getting forwarded correctly? One thing to try might be to put an Amazon Elastic Load Balancer in front of the instance. Then you can forward port 3306 for the MySQL connection.
I am running a little daft here as i have a problem with accessing database over the network.
I have deployed webapp on server A and i want to access database on server B. I have added necessary rules into iptables
iptables -A INPUT -p tcp -s 0/0 --sport 1024:65535 -d 'client ip' --dport 5432 -m state --state NEW,ESTABLISHED -j ACCEPT
iptables -A OUTPUT -p tcp -s 'client ip' --sport 5432 -d 0/0 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
I have added necessary permissions into pg_hba.conf
host all all 'client ip'/32 trust
hostssl all all 'client ip'/32 trust
I am also able to connect to the database from server A via CLI
serverA:/etc/postgresql/9.4/main# psql -h 'server B Ip' -U postgres -d test
psql (9.4.5)
SSL connection (protocol: TLSv1.2, cipher: ECDHE-RSA-AES256-GCM-SHA384, bits: 256, compression: off)
Type "help" for help.
test=#
Yet my webapp when trying to access the database from Server A throws me this error:
Message: pg_connect(): Unable to connect to PostgreSQL server:
FATAL: no pg_hba.conf entry for host "ServerA ip", user "postgres", database "test", SSL on
FATAL: no pg_hba.conf entry for host "ServerA ip", user "postgres", database "test", SSL off
Today I've been trying to access MySQL running on my remote work machine (Ubuntu), from my home machine (OSX), and I've had no success.
On my work machine, I've checked the following:
sudo netstat -ntlup | grep mysql
gives
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 23692/mysqld
and nmap tells me
PORT STATE SERVICE
3306/tcp open mysql
and in /etc/mysql/my.cnf I've set bind-address = 0.0.0.0
I've also run the following iptables rules:
iptables -A INPUT -i lo -p tcp --dport 3306 -j ACCEPT
iptables -A OUTPUT -o lo -p tcp --sport 3306 -j ACCEPT
What else can I check?
If there is some corporate network rule blocking my MySQL access, what could I check to find this?
The only way I can make this work is ssh tunnelling:
ssh -L 8080:localhost:3306 my_user_name#my_dev_machine_IP
and then if I do
mysql -h 127.0.0.1 --port=8080 -u root -p
I can get in. If I close the ssh tunnel, then I can't log in via mysql, nor even via telnet remote_IP 3306.
But this is no good for what I want, because I need the PHP code running on my local machine to be able to access the remote database.
I've also (hopefully temporarily) opened up the access to the MySQL databases to all hosts/IP:
GRANT ALL PRIVILEGES ON *.* TO 'application_username'#'%'
FLUSH PRIVILEGES
Any advice gratefully received!
Ubuntu has uwf - in some vps installations it is enabled by default. So, if it is, do sudo ufw allow 3306. I am writing this jsut in case you run nmap from your work machine. If nmap shows that result run from your mac, then this does not apply.
I've got a root server (Ubuntu 14.04) with a MYSQL (5.5.41) running and trying to access the database from two diffrent homepages on two diffrent server. The homepage servers use static ips.
I set up iptables on the root.
iptables -A INPUT -p tcp --dport 3306 -s 127.0.0.1 -j ACCEPT
iptables -A INPUT -p tcp --dport 3306 -s 'my_homepage_ip' -j ACCEPT
iptables -A INPUT -p tcp --dport 3306 -j REJECT --reject-with icmp-port-unreachable
If I try to access the server from the two homepages I get:
Can't connect to MySQL server on 'server_ip' (111)2003.
The homepages are running on webspaces from some german provider called 1und1.
If I open the iptables and delete the reject line, everything works fine. Also I tried to access the SQL Server from my local computer which is running an XAMPP server with the same script as I use at the homepage server. This works fine.
Server('my_server') and Port (3306) are defined in my php script.
$db = new mysqli(DB_SERVER, DB_USER, DB_PASS, DB_NAME, DB_PORT);
I assume that I got wrong IPs of the homepage server or that the homepage server use an other port than 3306.
Try changing your 3rd line to iptables -A INPUT -p tcp --dport 3306 -j LOG. This will log all attempts to the MySQL port to your /var/log/messages file, including the source IP address. This will allow you to verify that the source IP is the same as the IP being used for your website proper. If it is different, just change line 2 with the correct IP address.
My xampp is not working. I am getting the following error
Apache started [Port 80] Busy...` error is shown in xampp-control.
While Im typing in browsers url localhost/phpmyadmin, it shows Not Found HTTP Error 404. The requested resource is not found.
Maybe port 80 is used by another program.
On Windows you can see if there is any other program using port 80 with the command
netstat -a -b
You can also try using a different port than port 80 and see if that works. See:
https://stackoverflow.com/a/15029626/2802916
Use this command to find a port which is using:
netstat -an | find "80"
If the result like this, some programm is using 80 port
TCP 127.0.0.1:80 0.0.0.0:0 LISTENING
Use netstat -o -n -a | findstr 0.0:80 to find the process which use port 80 and stop it.
Otherwise, you can change the port in httpd.conf to something else, after change, save it and restart apache.
Start->Accessories right click on "Command prompt", in menu click "Run as Administrator" (on Windows XP you can just run it as usual), run netstat -anb then look through output for your program.
BTW, Skype by default tries to use ports 80 and 443 for incoming connections.
You can also run netstat -anb >C:/ports.txt It will print info to .txt file related to all ports and you can search easily.