Red Hat Bugzilla – Bug 16072
firewalld and ftp server incompatibility?
Last modified: 2008-05-01 11:37:57 EDT
I'm running RH6.2 and linuxconf 1.19r2. The machine has two ethernet
interfaces, eth0 on the local network and eth1 connected to the Internet.
I have installed wu-ftpd-2.6.0-14.6x and anonftp-3.0-3 to provide
anonymous ftp service to the Internet.
Everything seems to be configured correctly as the internal machines can
correctly access the Internet. Ftp from a machine on the internal network
to the firewall works correctly. Ftp from the firewall to the firewall
works correctly. However, whenever someone tried to connect from Internet,
their ftp connection hangs for 3-4 minutes before giving a "Can't build
data connection" error on the ftp client.
I have used the "internet firewall and masquerade" option under linuxconf
to setup a basic masquerading firewall on the machine, and have enabled
service 21/ftp under the TCP services section. I have confirmed that port
21 is open (/sbin/ipchains -L -v). I know my service provider is not
blocking port 21, since telneting to port 21 gives me the wu-ftp banner.
Closing because we don't ship linuxconf anymore
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.