Require only specific client certificates in IIS
I am implementing a solution that requires client certificates. I'm using IIS 7.5 and ASP.Net 4 WCF services.
I've set the SSL Settings to Require SSL and require client certificates. Looks good so far.
Because I'm new to the use of client certificates I've been doing a bit of research, and came across a Microsoft support article that attempts to explain a bit about the client certificate validation process. It states:
When the server prompts for a certificate, the request includes a list
of the certification authorities that the server trusts. The client
then compares this list to the list of certification authorities that
the client trusts and creates a list of the ones that match. Then, the
client compares that list to the client certificates it has and
determines which, if any, certificates have been issued by
certification authorities that both the client and the server trust.
Apparently the client will send certificates that both sides trust. What I'm interested in is can I configure IIS or my WCF service to only accept certain client certificates, such as ones we generate from our own certificate authority specifically for the purpose of this WCF service.
What is to stop someone using a client certificate from VeriSign or use from our certificate authority that were intended for some other purpose?
iis iis-7.5 client-certificate wcf
asked Jan 14 '14 at 18:09
JeremyJeremy
3231312
|
show 2 more comments
I am implementing a solution that requires client certificates. I'm using IIS 7.5 and ASP.Net 4 WCF services.
I've set the SSL Settings to Require SSL and require client certificates. Looks good so far.
Because I'm new to the use of client certificates I've been doing a bit of research, and came across a Microsoft support article that attempts to explain a bit about the client certificate validation process. It states:
When the server prompts for a certificate, the request includes a list
of the certification authorities that the server trusts. The client
then compares this list to the list of certification authorities that
the client trusts and creates a list of the ones that match. Then, the
client compares that list to the client certificates it has and
determines which, if any, certificates have been issued by
certification authorities that both the client and the server trust.
Apparently the client will send certificates that both sides trust. What I'm interested in is can I configure IIS or my WCF service to only accept certain client certificates, such as ones we generate from our own certificate authority specifically for the purpose of this WCF service.
What is to stop someone using a client certificate from VeriSign or use from our certificate authority that were intended for some other purpose?
iis iis-7.5 client-certificate wcf
asked Jan 14 '14 at 18:09
JeremyJeremy
3231312
The client does not send a certificate. It accepts one of the certificates offered by the server after validating against local certificates.
– Brian
Jan 14 '14 at 19:02
2
@Brian - I don't understand. we're talking about client certificates. The server side requires the client to prove their identity by supplying a client certificate to the server, does it not? How does the client not send a certificate?
– Jeremy
Jan 15 '14 at 20:55
@Jeremy did you ever find a solution to this problem?
– ahsteele
Jan 24 '17 at 20:31
@ahsteele I haven't. In our environment we are using a reverse proxy mechanism (F5 is the vendor) so we enforce the client certificate there. We are able to write a script that ensures the client certificate is one that we've issued. It doesn't allow us to validate that the certificate is the one for that specific user though. If you figure out how to do this in IIS I'd like to know too... :)
– Jeremy
Jan 24 '17 at 21:26
@Jeremy was hoping you had the silver bullet. I'm guessing in your scenario the user is also being presented with a list of certificates from all of the CAs that both the server and client trust.
– ahsteele
Jan 24 '17 at 22:13
|
show 2 more comments
I am implementing a solution that requires client certificates. I'm using IIS 7.5 and ASP.Net 4 WCF services.
I've set the SSL Settings to Require SSL and require client certificates. Looks good so far.
Because I'm new to the use of client certificates I've been doing a bit of research, and came across a Microsoft support article that attempts to explain a bit about the client certificate validation process. It states:
When the server prompts for a certificate, the request includes a list
of the certification authorities that the server trusts. The client
then compares this list to the list of certification authorities that
the client trusts and creates a list of the ones that match. Then, the
client compares that list to the client certificates it has and
determines which, if any, certificates have been issued by
certification authorities that both the client and the server trust.
Apparently the client will send certificates that both sides trust. What I'm interested in is can I configure IIS or my WCF service to only accept certain client certificates, such as ones we generate from our own certificate authority specifically for the purpose of this WCF service.
What is to stop someone using a client certificate from VeriSign or use from our certificate authority that were intended for some other purpose?
iis iis-7.5 client-certificate wcf
asked Jan 14 '14 at 18:09
JeremyJeremy
3231312
I am implementing a solution that requires client certificates. I'm using IIS 7.5 and ASP.Net 4 WCF services.
I've set the SSL Settings to Require SSL and require client certificates. Looks good so far.
Because I'm new to the use of client certificates I've been doing a bit of research, and came across a Microsoft support article that attempts to explain a bit about the client certificate validation process. It states:
When the server prompts for a certificate, the request includes a list
of the certification authorities that the server trusts. The client
then compares this list to the list of certification authorities that
the client trusts and creates a list of the ones that match. Then, the
client compares that list to the client certificates it has and
determines which, if any, certificates have been issued by
certification authorities that both the client and the server trust.
Apparently the client will send certificates that both sides trust. What I'm interested in is can I configure IIS or my WCF service to only accept certain client certificates, such as ones we generate from our own certificate authority specifically for the purpose of this WCF service.
What is to stop someone using a client certificate from VeriSign or use from our certificate authority that were intended for some other purpose?
iis iis-7.5 client-certificate wcf
iis iis-7.5 client-certificate wcf
asked Jan 14 '14 at 18:09
JeremyJeremy
3231312
asked Jan 14 '14 at 18:09
JeremyJeremy
3231312
asked Jan 14 '14 at 18:09
JeremyJeremy
3231312
asked Jan 14 '14 at 18:09
JeremyJeremy
3231312
asked Jan 14 '14 at 18:09
JeremyJeremy
3231312
3231312
The client does not send a certificate. It accepts one of the certificates offered by the server after validating against local certificates.
– Brian
Jan 14 '14 at 19:02
2
@Brian - I don't understand. we're talking about client certificates. The server side requires the client to prove their identity by supplying a client certificate to the server, does it not? How does the client not send a certificate?
– Jeremy
Jan 15 '14 at 20:55
@Jeremy did you ever find a solution to this problem?
– ahsteele
Jan 24 '17 at 20:31
@ahsteele I haven't. In our environment we are using a reverse proxy mechanism (F5 is the vendor) so we enforce the client certificate there. We are able to write a script that ensures the client certificate is one that we've issued. It doesn't allow us to validate that the certificate is the one for that specific user though. If you figure out how to do this in IIS I'd like to know too... :)
– Jeremy
Jan 24 '17 at 21:26
@Jeremy was hoping you had the silver bullet. I'm guessing in your scenario the user is also being presented with a list of certificates from all of the CAs that both the server and client trust.
– ahsteele
Jan 24 '17 at 22:13
|
show 2 more comments
The client does not send a certificate. It accepts one of the certificates offered by the server after validating against local certificates.
– Brian
Jan 14 '14 at 19:02
2
@Brian - I don't understand. we're talking about client certificates. The server side requires the client to prove their identity by supplying a client certificate to the server, does it not? How does the client not send a certificate?
– Jeremy
Jan 15 '14 at 20:55
@Jeremy did you ever find a solution to this problem?
– ahsteele
Jan 24 '17 at 20:31
@ahsteele I haven't. In our environment we are using a reverse proxy mechanism (F5 is the vendor) so we enforce the client certificate there. We are able to write a script that ensures the client certificate is one that we've issued. It doesn't allow us to validate that the certificate is the one for that specific user though. If you figure out how to do this in IIS I'd like to know too... :)
– Jeremy
Jan 24 '17 at 21:26
@Jeremy was hoping you had the silver bullet. I'm guessing in your scenario the user is also being presented with a list of certificates from all of the CAs that both the server and client trust.
– ahsteele
Jan 24 '17 at 22:13
The client does not send a certificate. It accepts one of the certificates offered by the server after validating against local certificates.
– Brian
Jan 14 '14 at 19:02
The client does not send a certificate. It accepts one of the certificates offered by the server after validating against local certificates.
– Brian
Jan 14 '14 at 19:02
2
2
@Brian - I don't understand. we're talking about client certificates. The server side requires the client to prove their identity by supplying a client certificate to the server, does it not? How does the client not send a certificate?
– Jeremy
Jan 15 '14 at 20:55
@Brian - I don't understand. we're talking about client certificates. The server side requires the client to prove their identity by supplying a client certificate to the server, does it not? How does the client not send a certificate?
– Jeremy
Jan 15 '14 at 20:55
@Jeremy did you ever find a solution to this problem?
– ahsteele
Jan 24 '17 at 20:31
@Jeremy did you ever find a solution to this problem?
– ahsteele
Jan 24 '17 at 20:31
@ahsteele I haven't. In our environment we are using a reverse proxy mechanism (F5 is the vendor) so we enforce the client certificate there. We are able to write a script that ensures the client certificate is one that we've issued. It doesn't allow us to validate that the certificate is the one for that specific user though. If you figure out how to do this in IIS I'd like to know too... :)
– Jeremy
Jan 24 '17 at 21:26
@ahsteele I haven't. In our environment we are using a reverse proxy mechanism (F5 is the vendor) so we enforce the client certificate there. We are able to write a script that ensures the client certificate is one that we've issued. It doesn't allow us to validate that the certificate is the one for that specific user though. If you figure out how to do this in IIS I'd like to know too... :)
– Jeremy
Jan 24 '17 at 21:26
@Jeremy was hoping you had the silver bullet. I'm guessing in your scenario the user is also being presented with a list of certificates from all of the CAs that both the server and client trust.
– ahsteele
Jan 24 '17 at 22:13
@Jeremy was hoping you had the silver bullet. I'm guessing in your scenario the user is also being presented with a list of certificates from all of the CAs that both the server and client trust.
– ahsteele
Jan 24 '17 at 22:13
|
show 2 more comments
1 Answer
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I believe this link provides the solution you are looking for. And it appears to be quite detailed. I am going to try it in the next couple of days and will get back my findings.
https://blogs.msdn.microsoft.com/asiatech/2014/02/12/how-to-configure-iis-client-certificate-mapping-authentication-for-iis7/
answered Jan 5 at 15:05
Carlos GuevaraCarlos Guevara
1
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Welcome to Super User! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference.
– bertieb
Jan 5 at 15:53
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I believe this link provides the solution you are looking for. And it appears to be quite detailed. I am going to try it in the next couple of days and will get back my findings.
https://blogs.msdn.microsoft.com/asiatech/2014/02/12/how-to-configure-iis-client-certificate-mapping-authentication-for-iis7/
answered Jan 5 at 15:05
Carlos GuevaraCarlos Guevara
1
New contributor
Carlos Guevara is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Welcome to Super User! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference.
– bertieb
Jan 5 at 15:53
add a comment |
I believe this link provides the solution you are looking for. And it appears to be quite detailed. I am going to try it in the next couple of days and will get back my findings.
https://blogs.msdn.microsoft.com/asiatech/2014/02/12/how-to-configure-iis-client-certificate-mapping-authentication-for-iis7/
answered Jan 5 at 15:05
Carlos GuevaraCarlos Guevara
1
New contributor
Carlos Guevara is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Welcome to Super User! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference.
– bertieb
Jan 5 at 15:53
add a comment |
I believe this link provides the solution you are looking for. And it appears to be quite detailed. I am going to try it in the next couple of days and will get back my findings.
https://blogs.msdn.microsoft.com/asiatech/2014/02/12/how-to-configure-iis-client-certificate-mapping-authentication-for-iis7/
answered Jan 5 at 15:05
Carlos GuevaraCarlos Guevara
1
New contributor
Carlos Guevara is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I believe this link provides the solution you are looking for. And it appears to be quite detailed. I am going to try it in the next couple of days and will get back my findings.
https://blogs.msdn.microsoft.com/asiatech/2014/02/12/how-to-configure-iis-client-certificate-mapping-authentication-for-iis7/
answered Jan 5 at 15:05
Carlos GuevaraCarlos Guevara
1
New contributor
Carlos Guevara is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Jan 5 at 15:05
Carlos GuevaraCarlos Guevara
1
New contributor
Carlos Guevara is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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answered Jan 5 at 15:05
Carlos GuevaraCarlos Guevara
1
answered Jan 5 at 15:05
Carlos GuevaraCarlos Guevara
1
1
New contributor
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New contributor
Carlos Guevara is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Carlos Guevara is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Welcome to Super User! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference.
– bertieb
Jan 5 at 15:53
add a comment |
Welcome to Super User! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference.
– bertieb
Jan 5 at 15:53
Welcome to Super User! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference.
– bertieb
Jan 5 at 15:53
Welcome to Super User! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference.
– bertieb
Jan 5 at 15:53
add a comment |
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The client does not send a certificate. It accepts one of the certificates offered by the server after validating against local certificates.
– Brian
Jan 14 '14 at 19:02
2
@Brian - I don't understand. we're talking about client certificates. The server side requires the client to prove their identity by supplying a client certificate to the server, does it not? How does the client not send a certificate?
– Jeremy
Jan 15 '14 at 20:55
@Jeremy did you ever find a solution to this problem?
– ahsteele
Jan 24 '17 at 20:31
@ahsteele I haven't. In our environment we are using a reverse proxy mechanism (F5 is the vendor) so we enforce the client certificate there. We are able to write a script that ensures the client certificate is one that we've issued. It doesn't allow us to validate that the certificate is the one for that specific user though. If you figure out how to do this in IIS I'd like to know too... :)
– Jeremy
Jan 24 '17 at 21:26
@Jeremy was hoping you had the silver bullet. I'm guessing in your scenario the user is also being presented with a list of certificates from all of the CAs that both the server and client trust.
– ahsteele
Jan 24 '17 at 22:13