How do I enable iptables on FTP?
Allowing FTP ports 20/21 in iptables
- Edit file /etc/sysconfig/iptables-config and add “ip_conntrack_ftp“” module to the section “IPTABLES_MODULES=“.
- Edit file /etc/sysconfig/iptables and make sure iptables rules are added for port 20/21.
- Restart iptables service.
How do I configure Windows firewall for FTP server for passive mode?
Step 1: Open Start > Settings > Control Panel > Firewall. Step 2: Add the TCP ports 5001-5008 to the firewall exception list. Now you should be able to connect to ftp server with passive transfer mode.
How do I enable FTP in Linux firewall?
FTP Server : Firewall The “Firewall Configuration” dialog from the menu (System > Administration > Firewall) or initiated from the command line by running the system-config-firewall command. On the “Trusted Services” section, scroll down the list and check the “FTP” option, then click the “Apply” button.
How to setup a passive FTP server with iptables?
There’s lots of advice on the net about how to setup a server with iptables to allow passive mode FTP. Below is the approach that we’ve found to be most effective. Start by configuring your FTP daemon to use a fixed range of ports. We use 41361 to 65534 which is the IANA registered ephemeral port range.
What happens if I disable iptables on FTP?
If I disable iptables, I am able to transfer my backup from another machine to FTP. If iptables is enforcing, then transfer failed. Your ftp server needs a channel to transfer data. Port 21 is used to establish the connection. So to make data transfer possible you’d need to enable port 20 as well.
What’s the difference between active and passive mode FTP?
Active and passive mode sessions FTP uses a data port and a command port to transfer information between a client and a server. During a typical active mode session, the command port uses port 21 and the data port uses port 20. When you use a passive mode session, however, the data port does not always use port 20.
Do you need to enable port 21 on FTP server?
Your ftp server needs a channel to transfer data. Port 21 is used to establish the connection. So to make data transfer possible you’d need to enable port 20 as well. See the following configuraton