Ftp: connect: Noroutetohost

Ftp: connect: Noroutetohost -- Linux general technology-Linux technology and application information. For more information, see the following section. Ftp: connect: No route to host
After vsftpd is installed today, the basic configuration is OK.
Access from other servers, prompt
If this problem occurs, it is not related to the configuration of the vsftpd service, because you can access the service normally locally. First, check whether the Firewall adds port 21,
Run the command iptables-L -- line-num.
It is found that it has been added. In addition, it can only be considered that the firewall has fewer ftp modules, resulting in an error.
Edit vi/etc/sysconfig/iptables-config
Add a row: IPTABLES_MODULES = "ip_nat_ftp ip_conntrack_ftp"
Then restart iptables.
[Root @ In-Server3 ~] # Service iptables restart
Flushing firewall rules: [OK]
Setting chains to policy ACCEPT: filter [OK]
Unloading iptables modules: [OK]
Applying iptables firewall rules: [OK]
Loading additional iptables modules: ip_nat_ftp ip_conntrack_ftp [OK]
OK. The module has been loaded.
Access the ftp service again
That's OK .....