AlmaLinux cannot ssh login to the VPS.

I can use putty or other software to login to my VPS, but if I remotely login from one of my other VPSes, it goes wrong.

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Code:

ssh -p 1023 root@1*.13*.7*.8*
ssh: connect to host *.*.*.* port 1023: Connection refused

Passwordauthentication is on. I use the same method via software and it is ok, but not from SSH command line. I am very confused. Please help and thank you in advance.

 

I whitelisted my VPS' ip via the command csf -a xxx.xxx.xxx.xxx.

But I still get the same error while trying to login from that VPS:ssh: connect to host xx.xx.xx.xx port 1023: Connection refused.

 

I am afraid I may not put it clearly.

I have an VPS A, with an IP(say 1.1.1.1), newly installed using the 131.00stable. SSH port 1023.
I have an VPS B, with an IP(say 2.2.2.2), installed six or seven years ago, and updated the centminmod to 131.00stable. SSH port 22.

I login to VPS A, and can easily ssh to VPS B, without tweaking any settings. But I cannot ssh from VPS B to VPS A.
On VPS A, I have whitelisted 2.2.2.2 using csf -a 2.2.2.2. And when I ssh from B to A, I did use: "ssh -p 1023 root@1.1.1.1".

I have checked /etc/csf/csf.allow file and confirmed 2.2.2.2 is added in the end of the file.

Now, I really don't know where the problem is. Thank you for your time.

 

Please help!

 

Thanks for the reply. I just did csf-r, and I checked /etc/csf/csf.deny and VPS B 's IP is not blacklisted.

And I still cannot ssh from VPS B to A. It drives me crazy!!!

 

Yes. After doing so, now the problem is solved. Thank you eva2000, your help is hightly appreciated.

Thank you too. It is a good way to diagnose the problem.