[CentOS] VSFTPD passive mode is not working

Wed Oct 26 11:48:33 UTC 2011
Tru Huynh <tru at centos.org>

On Wed, Oct 26, 2011 at 04:37:37AM -0700, Fawzy Ibrhim wrote:
> I have Centos 5.7 64bit; I have installed vsftpd as standalone service and using it for two years now with no problem. Suddenly; only it works with active mode. The passive mode stops working and gives time out. Firewall is disabled and SELinux is set to permissive.
> I ran tcpdump and I noticed that only first three packets reached the FTP for passive mode and no more packets on other ports
> # lsmod | grep conntrack
> ip_conntrack_ftp       41361  1 ip_nat_ftp
> ip_conntrack_netbios_ns    36033  0
> ip_conntrack           91621  5 ip_nat_ftp,ip_nat,ip_conntrack_ftp,ip_conntrack_netbios_ns,xt_state
> nfnetlink              40457  2 ip_nat,ip_conntrack
> Any suggestion? 

Tru Huynh (mirrors, CentOS i386/x86_64 Package Maintenance)
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