Hi all,
I have promised to Paul about a month ago to report the progress with
IKEv2 and Android.
The Android native clients from Samsung Galaxy Tab S6 and Samsung A22 5G
devices have successfully connected.
In fact, I've had the problem:
Jan 5 09:30:59.175518: "MYCONN-ikev2-cp"[6] 94.253.211.242 #63:
authentication failed: no acceptable EC
DSA/RSA-PSS ASN.1 signature hash proposal included for rsasig
which was remedied by the advice given here:
https://github.com/hwdsl2/setup-ipsec-vpn/issues/930
to add `authby=rsa-sha1` in the conn setup in /etc/ipsec.d/ikev2.conf.
I'm especially happy that it works with the native Android clients.
There is, however, a gotcha, that the native clients setup required root
CA, but providing the win7client.grf.hr.p12 once again worked for me. :)
This is my promised progress report. Now I have IKEv2 with RSA
connectivity on both Windows 10 (with `ms-dh-downgrade=yes`) and Android
devices.
Thanks for all of the help.
However, if the broader audience should be allowed to connect as well,
perhaps the manuals on libreswan.org site should be updated with the
development of libreswan.
It is awful that clients stick to the old ciphers and DH groups, but it
is just the commercial closed software :(
Kind regards,
Mirsad
On 1/4/2022 11:13 PM, Mirsad Goran Todorovac wrote:
Hi all,
I have succeeded connecting by adding the following line
esp=aes_gcm256,aes_gcm128,aes256-sha2_512,aes128-sha2_512,aes256-sha1,aes128-sha1
to config. The
esp=aes_gcm256-null,aes_gcm128-null,aes256-sha2_512,aes128-sha2_512,aes256-sha1,aes128-sha1,aes_gcm256-null;modp1024
line I've found in options doesn't work well with libreswan 4.5 I'm
using. Perhaps someone should update the cookbooks on the
libreswan.org site?
Thanks for the thought and all the help.
Kind regards,
Mirsad Todorovac
On 1/4/2022 10:38 PM, Mirsad Goran Todorovac wrote:
Hi all,
I have recreated the pub and priv certs according to instructions
again. This time I was lucky and the connection made in through the
initial message exchange and SA negotiation.
However, when libreswan tries to negotiate CHILD SA, something goes
wrong, and it can't choose right ESP proposal. I tried to set it
manually (the recommended commented esp), but then even the first
phase doesn't come through:
Jan 4 22:19:06.408740: "MYCONN-ikev2-cp"[1] 94.253.211.242 #3: no
local proposal matches remote proposals
1:ESP:ENCR=AES_CBC_256;INTEG=HMAC_SHA1_96;ESN=DISABLED
2:ESP:ENCR=AES_CBC_128;INTEG=HMAC_SHA1_96;ESN=DISABLED
3:ESP:ENCR=3DES;INTEG=HMAC_SHA1_96;ESN=DISABLED
4:ESP:ENCR=DES(UNUSED);INTEG=HMAC_SHA1_96;ESN=DISABLED
5:ESP:ENCR=NULL;INTEG=HMAC_SHA1_96;ESN=DISABLED
Jan 4 22:19:06.408749: "MYCONN-ikev2-cp"[1] 94.253.211.242 #3:
IKE_AUTH responder matching remote ESP/AH proposals failed, responder
SA processing returned STF_FAIL+v2N_NO_PROPOSAL_CHOSEN
Jan 4 22:19:06.408756: | process_v2_childs_sa_payload returned
STF_FAIL+v2N_NO_PROPOSAL_CHOSEN
Jan 4 22:19:06.408762: | should_send_delete: #3? no, IKEv2 SA in
state STATE_V2_IKE_AUTH_CHILD_R0 is not established
Jan 4 22:19:06.408769: | deleting state (STATE_V2_IKE_AUTH_CHILD_R0)
aged 0.001362s and NOT sending notification
Here is the session log:
https://domac.alu.hr/mtodorov/ikev2-20220104-06.log
/etc/ipsec.d/ikev2.conf:
conn MYCONN-ikev2-cp
# The server's actual IP goes here - not elastic IPs
left=161.53.235.3
leftcert=vpn.alu.hr
[email protected]
leftsendcert=always
leftsubnet=0.0.0.0/0
leftrsasigkey=%cert
# Clients
right=%any
# your addresspool to use - you might need NAT rules if
providing full internet to clients
rightaddresspool=192.168.100.10-192.168.100.253
# optional rightid with restrictions
rightid="O=ALU-UNIZG,CN=win7client.alu.hr"
rightca=%same
rightrsasigkey=%cert
#
# connection configuration
# DNS servers for clients to use
modecfgdns=8.8.8.8,192.168.100.1
# Versions up to 3.22 used modecfgdns1 and modecfgdns2
#modecfgdns1=8.8.8.8
#modecfgdns2=193.110.157.123
narrowing=yes
# recommended dpd/liveness to cleanup vanished clients
dpddelay=30
dpdtimeout=120
dpdaction=clear
auto=add
ikev2=insist
rekey=no
#
esp=aes_gcm256-null,aes_gcm128-null,aes256-sha2_512,aes128-sha2_512,aes256-sha1,aes128-sha1,aes_gcm256-null;modp1024
# ikev2 fragmentation support requires libreswan 3.14 or newer
fragmentation=yes
# optional PAM username verification (eg to implement
bandwidth quota
# pam-authorize=yes
--
Mirsad Goran Todorovac
CARNet sistem inženjer
Grafički fakultet | Akademija likovnih umjetnosti
Sveučilište u Zagrebu
--
Mirsad Goran Todorovac
CARNet sistem inženjer
Grafički fakultet | Akademija likovnih umjetnosti
Sveučilište u Zagrebu
--
Mirsad Goran Todorovac
CARNet sistem inženjer
Grafički fakultet | Akademija likovnih umjetnosti
Sveučilište u Zagrebu
--
CARNet system engineer
Faculty of Graphic Arts | Academy of Fine Arts
University of Zagreb, Republic of Croatia
tel. +385 (0)1 3711 451
mob. +385 91 57 88 355
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