PHP：ssh2_connect：无法远程连接到本地主机或计算机

Question

For the sake of my explanation, keep the following im mind.

Machine 1 Internal = 127.0.0.1
Machine 1 External = 192.0.0.1

Machine 2 Internal = 127.0.0.2
Machime 2 External = 192.0.0.2

Client External = 10.0.0.1

So, I will try to connect to the internal IP of Machine #1, while on Machine #1:

$server = "127.0.0.1";
$conn = ssh2_connect($server, 22);

Results in [/var/log/httpd/error_log]:

[:error] [client 10.0.0.1:0000] PHP Warning:  ssh2_connect(): Unable to connect to 127.0.0.1 on port 22 in /var/www/html/file.php on line 8
[:error] [client 10.0.0.1:0000] PHP Warning:  ssh2_connect(): Unable to connect to 127.0.0.1 in /var/www/html/file.php on line 8

Changing the IP from internal to external yielded the same error.

Now, I will try to connect to the external IP of machine #1 while the PHP file is ran off of Machine #2's webserver:

$server = "192.0.0.1"
$conn = ssh2_connect($server);

Results in [/var/log/httpd/error_log]:

[:error] [client 10.0.0.1:0000] PHP Warning:  ssh2_connect(): Unable to connect to 192.0.0.1 on port 22 in /var/www/html/file.php on line 8
[:error] [client 10.0.0.1:0000] PHP Warning:  ssh2_connect(): Unable to connect to 192.0.0.1 in /var/www/html/file.php on line 8

All of this is the case, but oddly enough, if I run the exact code through the php -a interpreter, and proceed to authenticate and run a command, all works flawlessly.

What is the issue??

Answer 1

I was able to resolve this by using setenforce 0 . Honestly the most puzzling issue I've had while programming. Thanks for the help!