Cryptofree Configuration

signalz · Aug 24, 2018, 5:14 PM

I am trying to setup an OpenVPN client to connect to Cryptostorm's cryptofree service based on their config file, but I keep getting errors related to TLS. How do I translate their ovpn file to a working configuration in pfSense?

Their config:

client
dev tun
# "If hostname resolve fails for --remote, retry resolve for 16 seconds
#  before failing."
resolv-retry 16
# "send server an exit notification if tunnel is restarted or OpenVPN
# process is exited". This informs our server that the session has 
# ended, which is necessary to decrease the session counter.
explicit-exit-notify 3
# "Require that peer certificate was signed with an explicit key usage
# and extended key usage based on RFC3280 TLS rules. This is a useful
# security option for clients, to ensure that the host they connect to
# is a designated server. This is an important security precaution to
# protect against a man-in-the-middle attack where an authorized client
# attempts to connect to another client by impersonating the server.
# The attack is easily prevented by having clients verify the server
# certificate using any one of --remote-cert-tls, --verify-x509-name,
# or --tls-verify."
remote-cert-tls server
# Even though the hostname below says "windows", the configuration for
# these ECC instances are actually cross-platform. It was just easier
# to reuse the DNS used by the Windows instances since the ECC instances 
# are on port 5060 of all of the Windows instance IPs.
remote windows-cryptofree.cryptostorm.nu 5060 udp
# "LZ4 generally offers the best performance with least CPU usage"
compress lz4
# "Call --down cmd/script before, rather than after, TUN/TAP close."
# No down cmd/script is used in this configuration, but most Debian
# users will be adding the /etc/openvpn/update-resolv-conf up/down
# script so OpenVPN can properly update the DNS.
down-pre
# Increase --verb for more verbosity, 0 to disable.
verb 4
# "Log at most 3 consecutive messages in the same category"
# Helps prevent the logs or STDOUT from getting flooded with the same
# messages.
mute 3
# Not doing "auth SHA512" for ECC instances, because:
# "If an AEAD cipher mode (e.g. GCM) is chosen, the specified --auth 
# algorithm is ignored for the data channel, and the authentication 
# method of the AEAD cipher is used instead."
# These instances use --cipher AES-256-GCM, so even if --auth is 
# specified, it would be ignored.
#
# Uncomment the below line to enable --auth-nocache
#auth-nocache
# "If specified, this directive will cause OpenVPN to immediately 
# forget username/password inputs after they are used".
# We're not enabling it by default because, for users that are inputting
# their token using standard input, it can be annoying because OpenVPN
# will constantly ask them for their token on every TLS renegotiation.
# For those providing a file to --auth-user-pass (to skip the user/pass 
# prompt), --auth-nocache doesn't prompt the user since the user/pass
# is loaded from a file.
auth-user-pass
# "256 bit key, 128 bit block". The best available at the moment.
# GCM chosen instead of CBC because in our tests it shows better 
# performance.
cipher AES-256-GCM
# TLS version 1.2 is the only version allowed, to prevent downgrade 
# attacks.
tls-version-min 1.2
tls-version-max 1.2
# Elliptic curve Diffie-Hellman + Elliptic Curve Digital Signature Algorithm
# with AES-256-GCM-SHA384, used to encrypt the control channel.
# The most secure available at the moment. Again, GCM chosen instead of
# CBC because in our tests it outperformed CBC.
tls-cipher TLS-ECDHE-ECDSA-WITH-AES-256-GCM-SHA384
tls-client
# CA certificate, using the signature algorithm ecdsa-with-SHA512,
# and prime256v1 to provide a 256 bit EC public key.
# "a 256-bit elliptic curve public key should provide comparable 
# security to a 3072-bit RSA public key".
<ca>
-----BEGIN CERTIFICATE-----
MIIBszCCAVigAwIBAgIJALumkoBwGuApMAoGCCqGSM49BAMEMBkxFzAVBgNVBAMM
DmNyeXB0b3N0b3JtIENBMB4XDTE4MDIyMjE5Mjc1NloXDTM4MDIyMjE5Mjc1Nlow
GTEXMBUGA1UEAwwOY3J5cHRvc3Rvcm0gQ0EwWTATBgcqhkjOPQIBBggqhkjOPQMB
BwNCAATAkRZNfbXjbs6LE1zkFlmnvamGgFNuuTUMidN1qrB1Uho39qxuRzzWYKAC
7flSU9vdIF9Wu0SoXxbx68ZStl/Uo4GIMIGFMB0GA1UdDgQWBBQ+CMOnCKZq7SzJ
qpc1o2atGx9RUjBJBgNVHSMEQjBAgBQ+CMOnCKZq7SzJqpc1o2atGx9RUqEdpBsw
GTEXMBUGA1UEAwwOY3J5cHRvc3Rvcm0gQ0GCCQC7ppKAcBrgKTAMBgNVHRMEBTAD
AQH/MAsGA1UdDwQEAwIBBjAKBggqhkjOPQQDBANJADBGAiEApPF2CAqMD4bHdOkG
vg3HMUwmcAfWoEnMMT8lm6n8JeoCIQCv9GORxdibasrHSZnSjlbOtLOWhbOlmz46
dVugiAfKSA==
-----END CERTIFICATE-----
</ca>
# "Encrypt and authenticate all control channel packets with the key".
# "Encrypting (and authenticating) control channel packets:
#   provides more privacy by hiding the certificate used for the TLS connection,
#   makes it harder to identify OpenVPN traffic as such,
#   provides "poor-man's" post-quantum security"
<tls-crypt>
-----BEGIN OpenVPN Static key V1-----
4875d729589689955012a2ee77f180ec
b815c4a336c719c11241a058dafaae00
806bbc21d5f1abad085341a3fca4b4f9
3949151c2979b4ee4390e8d9443acb00
61d537f1e9157e45f542c3648f563305
05f3eaff97ef82ee063b9d88bb9d5aa0
060428455b51a2a4fd929d9af4b94adc
b0a4acaa14ff62a9b0f4f9f0b3f01e71
fc98a6c60e8584f4deb3de793a5a7bc2
7014c9369f9724bc810ef0d191b30204
78eead725b3ae6aaef2e1030a197e417
421f159ed54eb2629afcfb337cf9a002
5bf1d5c0d820fffb219d0b4214043d2d
f27ed367b522945a5dadc748e2ca379e
3971789dbdf609b3d9bfe866361b28e3
c90589baa925157ad833093a5a7bede5
-----END OpenVPN Static key V1-----
</tls-crypt>
# uncomment the line below to enable TrackerSmacker,
# our DNS-based intrusive ad/tracker blocking service
#dhcp-option DNS 10.31.33.7

My config:

My errors:

Derelict · Aug 27, 2018, 12:27 AM

first, it's port 5060 not 560.

Second, I could not get that server to respond. It came right up using this:

# Cryptostorm.is config optimized for Tunnelblick/Viscosity OSX and OpenVPN iOS
client
dev tun
resolv-retry 16
nobind
float
#txqueuelen 686
remote-random
remote linux-cryptofree.cryptostorm.net 443 udp
remote linux-cryptofree.cryptostorm.org 443 udp
remote linux-cryptofree.cryptokens.ca 443 udp
remote linux-cryptofree.cstorm.pw 443 udp
remote linux-cryptofree.cryptostorm.nu 443 udp
comp-lzo
down-pre
allow-pull-fqdn
explicit-exit-notify 3
hand-window 37
mssfix 1400
auth-user-pass
<ca>
-----BEGIN CERTIFICATE-----
MIIFIDCCBAigAwIBAgIJAKekpGXxXvhbMA0GCSqGSIb3DQEBCwUAMIG6MQswCQYD
VQQGEwJDQTELMAkGA1UECBMCUUMxETAPBgNVBAcTCE1vbnRyZWFsMTYwNAYDVQQK
FC1LYXRhbmEgSG9sZGluZ3MgTGltaXRlIC8gIGNyeXB0b3N0b3JtX2RhcmtuZXQx
ETAPBgNVBAsTCFRlY2ggT3BzMRcwFQYDVQQDFA5jcnlwdG9zdG9ybV9pczEnMCUG
CSqGSIb3DQEJARYYY2VydGFkbWluQGNyeXB0b3N0b3JtLmlzMCAXDTE3MTIxNjA3
NTk0MloYDzIwNjcxMjE2MDc1OTQyWjCBujELMAkGA1UEBhMCQ0ExCzAJBgNVBAgT
AlFDMREwDwYDVQQHEwhNb250cmVhbDE2MDQGA1UEChQtS2F0YW5hIEhvbGRpbmdz
IExpbWl0ZSAvICBjcnlwdG9zdG9ybV9kYXJrbmV0MREwDwYDVQQLEwhUZWNoIE9w
czEXMBUGA1UEAxQOY3J5cHRvc3Rvcm1faXMxJzAlBgkqhkiG9w0BCQEWGGNlcnRh
ZG1pbkBjcnlwdG9zdG9ybS5pczCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoC
ggEBAMlo5Jghf+yb7j86QKDIA9gH9U+MOj1gFz7POcobF3UXx8CR6py4+kY0LEwE
s66YuwF3Et1Haymkrxy72RjHqD58FRC1KGg6PzhDr6foXgOpuOweUvBTLS6WR5Ba
TW+8oqSkFWIZUWxnk4N1npxonZRjYLjU4AJNB1uUKpp5uwtC+n9UYpNZ2H1SwZDc
tpJNzG3Q+ySqkaJYRR44YbeYoTQpbK/G3o7H2Kz1BsNck5h2SVBo9f3JS4gjTcaP
fGb6+Lqra/MPlXKY55MzKTLsZ5q1t3ZTjn0vDO7+D7xXoRCXyq9atcRJf9ldm80b
xABw5dTiS00E6hm3CzpPOSelAXcCAwEAAaOCASMwggEfMAwGA1UdEwQFMAMBAf8w
HQYDVR0OBBYEFDhY4fdfMy+L0fMdat75Kep6cFElMIHvBgNVHSMEgecwgeSAFDhY
4fdfMy+L0fMdat75Kep6cFEloYHApIG9MIG6MQswCQYDVQQGEwJDQTELMAkGA1UE
CBMCUUMxETAPBgNVBAcTCE1vbnRyZWFsMTYwNAYDVQQKFC1LYXRhbmEgSG9sZGlu
Z3MgTGltaXRlIC8gIGNyeXB0b3N0b3JtX2RhcmtuZXQxETAPBgNVBAsTCFRlY2gg
T3BzMRcwFQYDVQQDFA5jcnlwdG9zdG9ybV9pczEnMCUGCSqGSIb3DQEJARYYY2Vy
dGFkbWluQGNyeXB0b3N0b3JtLmlzggkAp6SkZfFe+FswDQYJKoZIhvcNAQELBQAD
ggEBABrPLmFpugICgUKyJ+6q5h8ZKfoV3S0RtTfrwtobNSFf7H4ZQvCXF2bOuhyc
g00ffreEGZN2uwtiLh38ncB/BFhHfgkITfTe88m08pJ45PkrpeBfrFbZ+ckXVhV/
aCnUKkIZgmCNKnn1RIbUt4mzTzggwtN3GamoTzSWqSwCEO9Ig1AJKi5Ms/5Awtdz
nr95qaqI0ih0NGnfC/yIGYvt1Yay0hCil3jIUT9Ogdw6DW6RqUdJaPrwm58fTwIR
U33KzBqGs8r3UEIMWXuIGc6eXOm2Br08iFgOsUPGqp1ulvD52pFH1o1vT21v3aXl
D9Ier/83JLMnBGctT1Kzs9OP/U0=
-----END CERTIFICATE-----
</ca>
ns-cert-type server
auth SHA512
cipher AES-256-CBC
replay-window 128 30
tls-cipher TLS-DHE-RSA-WITH-AES-256-CBC-SHA
tls-client
key-method 2
# uncomment the line below to enable TrackerSmacker,
# our DNS-based intrusive ad/tracker blocking service
#dhcp-option DNS 10.31.33.7