How are you?
I executed scheduled backup to B server in A server.
Ftp failed error occured.
error screen attached
https://www.virtualmin.com/system/files/vm_err01.gif
Uploading archive to FTP server pnuclimb.huso24.com .. .. upload failed! Failed to connect to 112.216.156.205:35082 : No route to host
I think the numbers attached to the following ftp address causing the error,
I do not know the reason why the number appears.
If execute backup to A server in B server, completed without error.
A server is an independent individual server, B independent individual server.
A server CentOS 5.8 webmin 1.600 virtualmin 3.94 gpl.
B server CentOS 6.3 webmin 1.600 virtualmin 3.94 gpl.
The random port number could be the port used for Data connection. I don't think Virtualmin would use random port numbers for FTP without being instructed as such. :)
Is Server B behind a firewall/NAT router?
Thank you at reply.
In B server, Do not give port number to ftp address in B server.
Also, they use ftp address without using ip address.
In B server backup log
[Backup destination] /public_html/seorabulfood_202_121105 on FTP server seorabulfood.humansoft.kr
Although I will format A server by CentOS 6.3, I should like to can know the cause.
- Old man novice
Ah, yes,
Again, this time on another server, schedule backup I tried, the results are as follows.
...upload failed! Failed to connect to 112.216.156.202:59327: No route to host
I do not know the reason why a random port number is added.
I now fell into a deep despair.
- Old man novice
About the random port number:
As I said, I have the suspicion that it is the DATA connection port number, which is randomly chosen according to how FTP works.
Connection to your IP and port 21 works, I just tried that.
I think you haven't answered my question stemming from the suspicion yet: Is/are your backup servers, i.e. those you're trying to connect via FTP, located behind a router/firewall? That would explain why the backup process cannot connect to the FTP DATA port.
Thank you for the answer.
There is nothing.
Each server is a stand-alone server with a fixed ip.
I do not have a router or firewall.
from my desktop pc, ftp connect without a port number, successfully connected well.
- Old man novice
Can you connect from one server to the other via others means, such as SSH?
-Eric
Thank you for your interest.
I am a little confused
In schedule backup well running server, ftp: "command not found"
In server "ftp failed" on schedule backup, ftp command is running well.
copy pasted
205 server (CentOS 6.3) connecting to CentOS 5.8 server
[root@huso24 ~]# ftp 210.127.253.70
bash: ftp: command not found
[root@huso24 ~]#
70 server (CentOS 5.8) connecting to CentOS 6.3 server
[root@mail ~]# ftp 110rotc.huso24.com
Connected to 110rotc.huso24.com.
220 FTP Server ready.
500 AUTH not understood
500 AUTH not understood
KERBEROS_V4 rejected as an authentication type
Name (110rotc.huso24.com:root): pnuclimb
331 Password required for pnuclimb
Password:
230 User pnuclimb logged in
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> quit
221 Goodbye.
[root@mail ~]# ftp 112.216.156.205
Connected to 112.216.156.205.
220 FTP Server ready.
500 AUTH not understood
500 AUTH not understood
KERBEROS_V4 rejected as an authentication type
Name (112.216.156.205:root): pnuclimb
331 Password required for pnuclimb
Password:
230 User pnuclimb logged in
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> quit
221 Goodbye.
[root@mail ~]#
Here are 205 server iptables
Firewall configuration written by system-config-firewall Manual customization of this file is not recommended.*filter
:FORWARD ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -p udp -m udp --dport ftp-data -j ACCEPT
-A INPUT -p udp -m udp --dport ftp -j ACCEPT
-A INPUT -p udp -m udp --dport domain -j ACCEPT
-A INPUT -p tcp -m tcp --dport 20000 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 10000 -j ACCEPT
-A INPUT -p tcp -m tcp --dport https -j ACCEPT
-A INPUT -p tcp -m tcp --dport http -j ACCEPT
-A INPUT -p tcp -m tcp --dport imaps -j ACCEPT
-A INPUT -p tcp -m tcp --dport imap -j ACCEPT
-A INPUT -p tcp -m tcp --dport pop3s -j ACCEPT
-A INPUT -p tcp -m tcp --dport pop3 -j ACCEPT
-A INPUT -p tcp -m tcp --dport ftp-data -j ACCEPT
-A INPUT -p tcp -m tcp --dport ftp -j ACCEPT
-A INPUT -p tcp -m tcp --dport domain -j ACCEPT
-A INPUT -p tcp -m tcp --dport submission -j ACCEPT
-A INPUT -p tcp -m tcp --dport smtp -j ACCEPT
-A INPUT -p tcp -m tcp --dport ssh -j ACCEPT
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp -m state -m tcp --dport 22 --state NEW -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT
Generated by webmin*mangle
:FORWARD ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:PREROUTING ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
COMMIT
Completed Generated by webmin*nat :OUTPUT ACCEPT [0:0] :PREROUTING ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] COMMIT
Completed- Old man novice
Thank you,
I tried a scheduled backup to a remote server, if select FTP, the upload failed!
If i select SSH, upload is successful.
I do not know why PORT number are attached in ftp connect.
Uploading archive to FTP server kua.huso.biz .. ...upload failed! Failed to connect to 112.216.156.206:32970: No route to host
- Old man novice
Well, SSH is a more secure way of transferring the backups, I'd highly recommend that, even if you weren't having problems.
However, if you're hoping to use FTP -- you might consider temporarily disabling the firewall on the remote host, just to see if the transfer is successful at that point.
-Eric
Thank you very much.
I decided to use ssh.
It works very well.
- Old man novice
I agree with Eric! FTP transmits passwords unencrypted, so if at all possible, SSH is preferable.