[CentOS] Definitive guide to setting up FTPIS on vsftpd

Followup:

I gave up on the Implicit and configured vsftpd for Explicit, that revealed some configuration errors (displayed on the client, Filezilla in my case).   I then corrected these errors and switched back to Implicit and all is well.

Frank M. Ramaekers Jr.

-----Original Message-----
From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of Kenneth Porter
Sent: Thursday, May 31, 2018 12:18 PM
To: centos at centos.org
Subject: Re: [CentOS] Definitive guide to setting up FTPIS on vsftpd

On 5/31/2018 8:01 AM, Frank M. Ramaekers wrote:
> I have a new CentOS 7.4 (recently upgraded to 7.5) system that I have been struggling with in configuring vsftpd for FTPS Implicit (port 990).
> (The latest instructions I've used are 
> at:https://urldefense.proofpoint.com/v2/url?u=https-3A__www.unixmen.co
> m_configure-2Dvsftpd-2Dssltls-2Dcentos-2D7_&d=DwICAg&c=laxeQK7vPmHfouI
> IPNyCfbQd49eK3u00U8Jdo0RFvts&r=EOaM1MkMLG24_TOy4m7EdDoX0CP9-c0YJ2kTdea
> gcqQ&m=pOhXDNk2HbQgZLcLf-QR_SwfNLQr4nYWByJ7xBAEhzo&s=MIMN2O4U1bk8mfuZf
> mBjQkQ6zM-uOHJ2XrMyrqs_U3E&e=)

Here's what I'm using. The tutorial site I used is currently down with a bandwidth exceeded warning, so I guess it must be quite popular.

I'm using LetsEncrypt certificates. My site domain is replaced with example.com. Use your own domain name there as registered with LetsEncrypt.

# see
# https://urldefense.proofpoint.com/v2/url?u=http-3A__beginlinux.com_blog_2009_01_secure-2Dftp-2Dwith-2Dssl-2Don-2Dcentos_&d=DwICAg&c=laxeQK7vPmHfouIIPNyCfbQd49eK3u00U8Jdo0RFvts&r=EOaM1MkMLG24_TOy4m7EdDoX0CP9-c0YJ2kTdeagcqQ&m=pOhXDNk2HbQgZLcLf-QR_SwfNLQr4nYWByJ7xBAEhzo&s=BtdOGrSrWbyXnhcXRGrpjCnjzIHLoKYhtVyCn7OhEWQ&e=

rsa_cert_file=/etc/letsencrypt/live/example.com/fullchain.pem
rsa_private_key_file=/etc/letsencrypt/live/example.com/privkey.pem
ssl_enable=YES
force_local_logins_ssl=NO
force_local_data_ssl=NO
ssl_tlsv1=YES
ssl_sslv2=YES
ssl_sslv3=YES

# limit pasv ports to range that iptables can check
pasv_min_port=6900
pasv_max_port=6969

# added 20120213 to deal with FileZilla 3.5.3 stricter cipher list # see https://urldefense.proofpoint.com/v2/url?u=http-3A__forum.filezilla-2Dproject.org_viewtopic.php-3Ff-3D2-26t-3D23275&d=DwICAg&c=laxeQK7vPmHfouIIPNyCfbQd49eK3u00U8Jdo0RFvts&r=EOaM1MkMLG24_TOy4m7EdDoX0CP9-c0YJ2kTdeagcqQ&m=pOhXDNk2HbQgZLcLf-QR_SwfNLQr4nYWByJ7xBAEhzo&s=IKSWGNlSjgyMbNAv1TsKXFqj_bECF2hyTJWq54tUOhc&e=
ssl_ciphers=HIGH

dual_log_enable=YES

allow_writeable_chroot=YES
user_sub_token=$USER

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