OPS345 Lab 7

From Littlesvr Wiki
Revision as of 06:48, 8 March 2022 by Andrew (talk | contribs)
Jump to navigation Jump to search

THIS PAGE IS A DRAFT, NOT READY FOR USE YET

  • webmail
  • set up thunderbird for myseneca
  • can't use the same keys generated in www lab, they're for the wrong FQDN
andrew@p51:~/prog/seneca/ops345/new$ sudo su -
root@p51:~# certonly --manual --preferred-challenges dns
certonly: command not found
root@p51:~# certbot certonly --manual --preferred-challenges dns
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator manual, Installer None
Please enter in your domain name(s) (comma and/or space separated)  (Enter 'c'
to cancel): email.asmith15.ops345.ca
Obtaining a new certificate
Performing the following challenges:
dns-01 challenge for email.asmith15.ops345.ca

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
NOTE: The IP of this machine will be publicly logged as having requested this
certificate. If you're running certbot in manual mode on a machine that is not
your server, please ensure you're okay with that.

Are you OK with your IP being logged?
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(Y)es/(N)o: y

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Please deploy a DNS TXT record under the name
_acme-challenge.email.asmith15.ops345.ca with the following value:

PdK1vlZnYMdBO7untofSCkfXH2ejk3EE019R7A90x7Q

Before continuing, verify the record is deployed.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Press Enter to Continue
Waiting for verification...
Cleaning up challenges

IMPORTANT NOTES:
 - Congratulations! Your certificate and chain have been saved at:
   /etc/letsencrypt/live/email.asmith15.ops345.ca/fullchain.pem
   Your key file has been saved at:
   /etc/letsencrypt/live/email.asmith15.ops345.ca/privkey.pem
   Your cert will expire on 2022-02-28. To obtain a new or tweaked
   version of this certificate in the future, simply run certbot
   again. To non-interactively renew *all* of your certificates, run
   "certbot renew"
 - If you like Certbot, please consider supporting our work by:

   Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donate
   Donating to EFF:                    https://eff.org/donate-le

root@p51:~# cp /etc/letsencrypt/live/email.asmith15.ops345.ca/cert.pem ~andrew/prog/seneca/ops345/new/keys/email.asmith15.ops345.ca.cert.pem
root@p51:~# cp /etc/letsencrypt/live/email.asmith15.ops345.ca/privkey.pem ~andrew/prog/seneca/ops345/new/keys/email.asmith15.ops345.ca.key.pem
root@p51:~# chown andrew ~andrew/prog/seneca/ops345/new/keys/email.asmith15.ops345.ca.*
  • Put keys on the email server:
scp -P 2212 -i keys/ssh/ops345-all-aws-machines.pem keys/email.asmith15.ops345.ca.* andrew@34.202.103.43:~
[root@email andrew]# cp email.asmith15.ops345.ca.cert.pem /etc/pki/tls/certs/
[root@email andrew]# cp email.asmith15.ops345.ca.key.pem /etc/pki/tls/private/
  • configure postfix to enable encrypted connections from client software. add this to the bottom of main.cf:
# Settings to enable secure SMTP using my self-signed certificate:
smtpd_tls_auth_only = no
smtpd_use_tls = yes
smtp_use_tls = yes
smtpd_tls_key_file = /etc/pki/tls/private/email.asmith15.ops345.ca.key.pem
smtpd_tls_cert_file = /etc/pki/tls/certs/email.asmith15.ops345.ca.cert.pem
tls_random_source = dev:/dev/urandom
smtpd_tls_loglevel = 1
  • test with telnet/EHLO: should say 250-STARTTLS
  • complete test will be done with thunderbird later
  • dovecot installed in previous lab, it needs very little configuration for our simple setup
  • /etc/dovecot/dovecot.conf:
  • Modify the protocols option so that Dovecot will work with IMAP connections, no POP3 or LMTP.
  • 10-ssl.conf:
ssl_cert = </etc/pki/tls/certs/email.asmith15.ops345.ca.cert.pem
ssl_key = </etc/pki/tls/private/email.asmith15.ops345.ca.key.pem
Retrieved from "http://wiki.littlesvr.ca/w/index.php?title=OPS345_Lab_7&oldid=112"