CentOS - Jun 2018 - 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&essl_ciphers=HIGH

dual_log_enable=YES

allow_writeable_chroot=YES
user_sub_token=$USER

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--On Wednesday, June 06, 2018 3:08 PM +0000 "Frank M. Ramaekers" 
<FRamaekers at ailife.com> wrote:
> 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.
Can you say what was wrong? That might help others who encounter the same 
problems or help improve the documentation on the settings.

Do you use etckeeper? It puts /etc under git revision control, so you 
easily check your configuration changes over time. It's pretty easy to set 
up.

Well, it was a couple of parameters. 
chroot_username had an undefined user, and there was something else that I
can't seem to remember.

Best practice is to setup the Explicit FTPS first, get it working then add:

implicit_ssl=yes
listen_port=990

Frank M. Ramaekers Jr.


-----Original Message-----
From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of Kenneth Porter
Sent: Wednesday, June 6, 2018 9:36 AM
To: CentOS mailing list
Subject: Re: [CentOS] Definitive guide to setting up FTPIS on vsftpd

--On Wednesday, June 06, 2018 3:08 PM +0000 "Frank M. Ramaekers" 
<FRamaekers at ailife.com> wrote:
> 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.
Can you say what was wrong? That might help others who encounter the same
problems or help improve the documentation on the settings.

Do you use etckeeper? It puts /etc under git revision control, so you easily
check your configuration changes over time. It's pretty easy to set up.
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This message contains information which is privileged and confidential and is
solely for the use of the intended recipient. If you are not the intended
recipient, be aware that any review, disclosure, copying, distribution, or use
of the contents of this message is strictly prohibited. If you have received
this in error, please destroy it immediately and notify us at PrivacyAct at
torchmarkcorp.com.