Juniper Pulse doesn't connect properly

[Pavel Kogan]

No, it makes no difference.

Pavel

On 14 December 2015 at 12:57, Krzysztof Kwiatkowski <kris at amongbytes.com> wrote:
> Hmmm...
>
> Does it change anything if you add "--no-cert-check" to openconnect
> options (just temporarily for testing).
>
> Kris
>
> On 14/12/15 12:14, Pavel Kogan wrote:
>> I'm not hard-coding the DSID anywhere, so I assume the wrapper script
>> gets a new one each time.
>>
>> It kicks me off after a few seconds. Actually, I can't really be
>> certain it connects properly in the first place since I haven't been
>> able to access anything behind the VPN in the interim.
>>
>> Yes, the host I'm connecting to does require host checking. I was
>> using `juniper-vpn.py` because I wanted to avoid having to download
>> and use a jar.
>>
>> Anyway, with the tncc-wrapper.py from the openconnect repo:
>> ```
>> $ sudo openconnect --juniper --useragent 'Mozilla/5.0 (Linux) Firefox'
>> --csd-wrapper=tncc-wrapper.py pulse.example.com
>> [sudo] password for pavel:
>> WARNING: Juniper Network Connect support is experimental.
>> It will probably be superseded by Junos Pulse support.
>> GET https://pulse.example.com/
>> Attempting to connect to server 19X.XXX.XXX.XXX:443
>> SSL negotiation with pulse.example.com
>> Connected to HTTPS on pulse.example.com
>> Got HTTP response: HTTP/1.1 302 Found
>> GET https://pulse.example.com/dana-na/auth/url_5/welcome.cgi
>> SSL negotiation with pulse.example.com
>> Connected to HTTPS on pulse.example.com
>> frmLogin
>> username:pavel.kogan
>> password:
>> POST https://pulse.example.com/dana-na/auth/url_5/login.cgi
>> SSL negotiation with pulse.example.com
>> Connected to HTTPS on pulse.example.com
>> Got HTTP response: HTTP/1.1 302 Moved
>> GET https://pulse.example.com/dana-na/auth/url_5/welcome.cgi?p=preauth&id=state_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx&signinRealmId=3
>> SSL negotiation with pulse.example.com
>> Connected to HTTPS on pulse.example.com
>> socket opened
>> GET https://pulse.example.com/dana-na/auth/url_5/welcome.cgi?p=preauth&id=state_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx&signinRealmId=3
>> SSL negotiation with pulse.example.com
>> Connected to HTTPS on pulse.example.com
>> Got HTTP response: HTTP/1.1 302 Moved
>> GET https://pulse.example.com/dana-na/auth/url_5/login.cgi?loginmode=mode_postAuth&postauth=state_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> SSL negotiation with pulse.example.com
>> Connected to HTTPS on pulse.example.com
>> Got HTTP response: HTTP/1.1 302 Moved
>> GET https://pulse.example.com/dana-na/auth/remediate.cgi?step=rolecheck&stateId=state_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx&realmId=3&rolesremaining=0&realmsremaining=1
>> SSL negotiation with pulse.example.com
>> Connected to HTTPS on pulse.example.com
>> Unknown form ID 'frm'
>> Dumping unknown HTML form:
>> <form id="frm_142" name="frm" action="remediate.cgi">
>>
>>     <input id="action_31" type="hidden" name="action" value="">
>>
>>     <input id="signinId_2" type="hidden" name="signinId" value="">
>>     <input id="realmId_10" type="hidden" name="realmId" value="3">
>>     <input id="executedStep_2" type="hidden" name="executedStep"
>> value="rolecheck">
>>     <input id="stateId_8" type="hidden" name="stateId"
>> value="state_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx">
>>     <input id="p_16" type="hidden" name="p" value="">
>>
>>     <input id="showContinue_2" type="hidden" name="showContinue" value="0">
>>     <input id="showRemedOption_2" type="hidden" name="showRemedOption"
>> value="0">
>>
>>     <input id="hostcheckTS_2" type="hidden" name="hostcheckTS" value="">
>>     <input id="totalseconds_2" type="hidden" name="totalseconds" value="">
>>
>>     <input id="executedAction_2" type="hidden" name="executedAction" value="">
>> </form>Failed to obtain WebVPN cookie
>> java.lang.NullPointerException
>>         at net.juniper.tnc.HttpNAR.HttpNAR.processCommands(HttpNAR.java:381)
>>         at net.juniper.tnc.HttpNAR.HttpNAR.run(HttpNAR.java:261)
>>         at net.juniper.tnc.NARPlatform.linux.LinuxHttpNAR.main(LinuxHttpNAR.java:52)
>> ```
>>
>> Handling this unrecognised form was actually the change I had to make
>> to `juniper-vpn.py`. It seems purely informational so I just had the
>> script ignore it and carry on to tncc. All the fields are read-only
>> (according to the dump I did from the python script) but maybe
>> something does need to be done with it?
>>
>> On 14 December 2015 at 10:01, David Woodhouse <dwmw2 at infradead.org> wrote:
>>> On Fri, 2015-12-11 at 16:53 +0000, Pavel Kogan wrote:
>>>>
>>>> ```
>>>> $ sudo ./juniper-vpn.py --host pulse.example.com --user pavel.kogan
>>>> --stdin DSID=%DSID% openconnect --juniper %HOST% --cookie-on-stdin
>>>> --interface=tun0
>>>> Password:
>>>> WARNING: Juniper Network Connect support is experimental.
>>>> It will probably be superseded by Junos Pulse support.
>>>> Attempting to connect to server 19X.XXX.XXX.XXX:443
>>>> SSL negotiation with pulse.example.com
>>>> Connected to HTTPS on pulse.example.com
>>>> SSL negotiation with pulse.example.com
>>>> Connected to HTTPS on pulse.example.com
>>>> Connected tun0 as 10.XXX.XXX.XXX, using SSL
>>>> ESP session established with server
>>>> Server terminated connection (session expired)
>>>> Unknown error; exiting.
>>>> WARNING: Juniper Network Connect support is experimental.
>>>> It will probably be superseded by Junos Pulse support.
>>>> Attempting to connect to server 19X.XXX.XXX.XXX:443
>>>> SSL negotiation with pulse.example.com
>>>> Connected to HTTPS on pulse.example.com
>>>> Got HTTP response: HTTP/1.1 302 Found
>>>> Unexpected 302 result from server
>>>> Creating SSL connection failed
>>>> Waiting 10...
>>>> ```
>>>> The error then repeats until I Ctrl-C.
>>>
>>> That's odd. I assume you're using a fresh DSID cookie each time you
>>> connect? And it then kicks you off almost immediately, telling you
>>> 'session expired'? How long does it remain connected for?
>>>
>>> I wonder if this is a problem with tncc.py from the scripts you're
>>> using to authenticate. In some modes the host checker script is
>>> expected to keep running all the time you're connected to the VPN, but
>>> ISTR that isn't implemented in Russ's tncc.py.
>>>
>>> Can you try running the *real* one? OpenConnect has support for
>>> spawning it... do you actually need external scripts at all for
>>> authentication, in fact? Anything we can do in an external python
>>> script parsing the forms, we *should* be able to add to OpenConnect's
>>> own parsing hacks.
>>>
>>> --
>>> dwmw2
>>>
>>
>