Hi Morgan,

Setting *cas.ticket.st.numberOfUses* property a value bigger than 1 makes 
it possible to reuse the service ticket. If it is defined in the protocol 
that it can be used only once, then why is this property ?

Thank you.

5 Ocak 2017 Perşembe 20:21:17 UTC+3 tarihinde morgan yazdı:
>
> As defined by the CAS protocol, Service Tickets can only be validated 
> once.  They cannot be reused. 
>
>          Andy 
>
> On Thu, 5 Jan 2017, Gokhan Mansuroglu wrote: 
>
> > I am asking how to prevent someone reusing a ST from a different client 
> IP. 
> > 
> > 5 Ocak 2017 Perşembe 19:50:03 UTC+3 tarihinde Ray Bon yazdı: 
> >> 
> >> Gokhan, 
> >> 
> >> Are you ask how to reuse a ST or are you asking how to prevent someone 
> >> reusing a ST? 
> >> 
> >> I will answer the second. ST lifetime is short (10 seconds by default, 
> I 
> >> think). Once a ST has been submitted to CAS for validation (step 4 
> below) 
> >> or ticket lifetime has passed, CAS will mark the ST as expired and it 
> can 
> >> no longer be used. 
> >> 
> >> Ray 
> >> 
> >> On 2017-01-05 04:14, Gokhan Mansuroglu wrote: 
> >> 
> >> Hi, 
> >> 
> >> I have an additional requirement for Cas protocol. I will simplify the 
> >> protocol just to explain my case; 
> >> 
> >> 1. Client tries to access *https://app.example.com 
> >> <http://app.example.com>* 
> >> 2. Browser redirected to *
> https://cas.example.com/cas/login?service=https://app.example.com 
> >> <https://cas.example.com/cas/login?service=https://app.example.com>* 
> >> 3. User authenticates with username and password and redirected to *
> https://app.examle.com 
> >> <https://app.examle.com>?ticket=ST-xxx* 
> >> 4. The app send a validation request and gets the authentication 
> >> information. 
> >> 
> >> Lets say you want to be able to use the service ticket multiple times. 
> >> Then whoever has the link *https://app.examle.com?ticket=ST-xxx 
> >> <https://app.examle.com?ticket=ST-xxx>* can successfully log in the 
> >> application which results in very risky situation. 
> >> 
> >> What is your solution to this problem ? 
> >> 
> >> Thank you very much. 
> >> 
> >> -- 
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> >> <
> https://groups.google.com/a/apereo.org/d/msgid/cas-user/d127cbd1-49cb-4f4c-bb81-72899fd1af16%40apereo.org?utm_medium=email&utm_source=footer>
>  
>
> >> . 
> >> 
> >> 
> >> -- 
> >> Ray Bon 
> >> Programmer Analyst 
> >> Development Services, University Systems 
> >> 2507218831 | CLE C023 | rb...@uvic.ca <javascript:> 
> >> 
> >> 
> > 
> > -- 
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> >

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