Rafai,
I'm using:
#> cat /etc/xinetd.d/imap
service imaps
{
socket_type = stream
protocol = tcp
wait = no
user = root
server = /usr/bin/stunnel4
server_args = /etc/stunnel/imaps.conf
}
#> cat /etc/stunnel/imaps.conf
connect = localhost:143
setuid = dbmail
setgid = dbmail
sslVersion = SSLv3
cert = /etc/ssl/mail.nfg.nl.pem
session = 14400
TIMEOUTidle = 14400
On 03/18/2011 10:59 AM, "Rafał Radecki" <[email protected]>" wrote:
> Hi All.
> I am using stunnel version 4.15 on CentOS 5.5. I am trying to add SSL to
> DBMAIL imap/pop3 server. I am running stunnel through xinetd:
> *- /etc/xinetd.d/imaps:*
> service imaps
> {
> disable = no
> socket_type = stream
> user = root
> server = /usr/sbin/stunnel
> server_args = /etc/stunnel/imaps.conf
> wait = no
> protocol = tcp
> port = 993
> }
> *- /etc/xinetd.d/pop3s:*
> service pop3s
> {
> disable = no
> socket_type = stream
> user = root
> server = /usr/sbin/stunnel
> server_args = /etc/stunnel/pop3s.conf
> protocol = tcp
> port = 995
> wait = no
> }
> *- /etc/stunnel/imaps.conf:*
> connect = localhost:143
> cert = /etc/pki/tls/certs/x.local.crt
> key = /etc/pki/tls/private/x.local...key
> debug = local1.7
> protocol = imap
> *- /etc/stunnel/pop3s.conf:*
> connect = localhost:110
> cert = /etc/pki/tls/certs/x.local.crt
> key = /etc/pki/tls/private/x.local.key
> debug = local0.7
> protocol = pop3
>
> netstat -tlpn | awk -F: '$2 ~ /^993|995|110|143/ {print}':
> tcp 0 0 0.0.0.0:993 <http://0.0.0.0:993/>
> 0.0.0.0:* LISTEN 2319/xinetd
> tcp 0 0 0.0.0.0:995 <http://0.0.0.0:995/>
> 0.0.0.0:* LISTEN 2319/xinetd
> tcp 0 0 127.0.0.1:110 <http://127.0.0.1:110/>
> 0.0.0.0:* LISTEN 2484/dbmail-pop3d
> tcp 0 0 127.0.0.1:143 <http://127.0.0.1:143/>
> 0.0.0.0:* LISTEN 2453/dbmail-imapd
>
> So whenever there is a connection to port 993/995 xinetd invokes stunnel
> with proper config file.
> When I *connect to port 993* I get in log file:
>
> /Mar 18 08:29:43 cent5a stunnel: LOG5[3345:3086460624]: stunnel 4.15 on
> i686-redhat-linux-gnu with OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
> Mar 18 08:29:43 cent5a stunnel: LOG5[3345:3086460624]: Threading:PTHREAD
> SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP
> Mar 18 08:29:43 cent5a stunnel: LOG7[3345:3086460624]: stunnel started
> Mar 18 08:29:43 cent5a stunnel: LOG7[3345:3086460624]: FD 0 in
> non-blocking mode
> Mar 18 08:29:43 cent5a stunnel: LOG7[3345:3086460624]: FD 1 in
> non-blocking mode
> Mar 18 08:29:43 cent5a stunnel: LOG7[3345:3086460624]: FD 4 in
> non-blocking mode
> Mar 18 08:29:43 cent5a stunnel: LOG7[3345:3086460624]: FD 5 in
> non-blocking mode
> Mar 18 08:29:43 cent5a stunnel: LOG7[3345:3086460624]: Connection from
> 127.0.0.1:45634 <http://127.0.0.1:45634/> permitted by libwrap
> Mar 18 08:29:43 cent5a stunnel: LOG5[3345:3086460624]: stunnel connected
> from 127.0.0.1:45634 <http://127.0.0.1:45634/>
> Mar 18 08:29:43 cent5a stunnel: LOG7[3345:3086460624]: FD 4 in
> non-blocking mode
> Mar 18 08:29:43 cent5a stunnel: LOG7[3345:3086460624]: stunnel
> connecting 127.0.0.1:143 <http://127.0.0.1:143/>
> Mar 18 08:29:43 cent5a stunnel: LOG7[3345:3086460624]: connect_wait:
> waiting 10 seconds
> Mar 18 08:29:43 cent5a stunnel: LOG7[3345:3086460624]: connect_wait:
> connected
> Mar 18 08:29:43 cent5a stunnel: LOG7[3345:3086460624]: Remote FD=4
> initialized
> Mar 18 08:29:43 cent5a stunnel: LOG5[3345:3086460624]: Negotiations for
> imap (server side) started
> Mar 18 08:29:43 cent5a stunnel: LOG3[3345:3086460624]: *Protocol imap
> not supported in server mode*
> Mar 18 08:29:43 cent5a stunnel: LOG5[3345:3086460624]: Connection reset:
> 0 bytes sent to SSL, 0 bytes sent to socket
> Mar 18 08:29:43 cent5a stunnel: LOG7[3345:3086460624]: stunnel finished
> (0 left)/
>
> From which version of stunnel does option protocol = imap work? What
> exactly does it do?
>
> When I *connect to port 995* I get in log file:
>
> /Mar 18 08:31:48 cent5a stunnel: LOG5[3359:3086272208]: stunnel 4.15 on
> i686-redhat-linux-gnu with OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
> Mar 18 08:31:48 cent5a stunnel: LOG5[3359:3086272208]: Threading:PTHREAD
> SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: stunnel started
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: FD 0 in
> non-blocking mode
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: FD 1 in
> non-blocking mode
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: FD 4 in
> non-blocking mode
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: FD 5 in
> non-blocking mode
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: Connection from
> 127.0.0...1:33112 <http://127.0.0.1:33112/> permitted by libwrap
> Mar 18 08:31:48 cent5a stunnel: LOG5[3359:3086272208]: stunnel connected
> from 127.0.0.1:33112 <http://127.0.0.1:33112/>
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: FD 4 in
> non-blocking mode
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: stunnel
> connecting 127.0.0.1:110 <http://127.0.0.1:110/>
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: connect_wait:
> waiting 10 seconds
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: connect_wait:
> connected
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: Remote FD=4
> initialized
> Mar 18 08:31:48 cent5a stunnel: LOG5[3359:3086272208]: Negotiations for
> pop3 (server side) started
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: <- +OK DBMAIL
> pop3 server ready to rock
> <[email protected]>
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: -> +OK DBMAIL
> pop3 server ready to rock
> <[email protected]> + stunnel
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: <- ...
> Mar 18 08:31:48 cent5a stunnel: LOG3[3359:3086272208]: *Client does not
> want TLS*
> Mar 18 08:31:48 cent5a stunnel: LOG5[3359:3086272208]: Connection reset:
> 0 bytes sent to SSL, 0 bytes sent to socket
> Mar 18 08:31:48 cent5a stunnel: LOG7[3359:3086272208]: stunnel finished
> (0 left)/
>
> Can anyone help?
>
> Regards,
> Rafal.
>
>
>
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--
________________________________________________________________
Paul Stevens paul at nfg.nl
NET FACILITIES GROUP GPG/PGP: 1024D/11F8CD31
The Netherlands________________________________http://www.nfg.nl
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