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iis security : IIS to IIS using kerberos and non-standard web port
web services on a separate IIS server. I have properly setup all my SPNs, service account etc.. and it work fine. My problem is I have a requirement to run my webservices server on 8080 web port. I try every combination and I can't make it success full. It work if I ran my front-end on 8080 but not the back-end. I found the following article: http://support.microsoft.com/kb/908209/ mentionning that IE: "the Wininet.dll file does not pass the port number of the target Web site when it calls the InitializeSecurityContext function to build the Kerberos ticket. This prevents Internet Explorer 6 from using the Kerberos protocol to connect to multiple Web sites that run on different ports under different identities. " Is IIS doing the same thing as IE when an IIS server contact another IIS
IIS itself doesn't use any particular library - that is dependant on your
calling code (e.g. whether it uses WinInet or some other library) When you created the SPN for the backend server, did you specift http/servername:8080 for your SPN? Cheers Ken [quoted text, click to view] "Pom" <Pom@discussions.microsoft.com> wrote in message
news:CA1D3836-C881-4896-8560-221EC269A28B@microsoft.com... >I have implemented kerberos in 3 tiers environnmnet where IIS 6.0 access a > web services on a separate IIS server. I have properly setup all my SPNs, > service account etc.. and it work fine. My problem is I have a requirement > to > run my webservices server on 8080 web port. I try every combination and I > can't make it success full. It work if I ran my front-end on 8080 but not > the > back-end. I found the following article: > http://support.microsoft.com/kb/908209/ mentionning that IE: > > "the Wininet.dll file does not pass the port number of the target Web site > when it calls the InitializeSecurityContext function to build the Kerberos > ticket. This prevents Internet Explorer 6 from using the Kerberos protocol > to > connect to multiple Web sites that run on different ports under different > identities. " > > Is IIS doing the same thing as IE when an IIS server contact another IIS > server on a non-standard port?
Yes I tried 8080.
I Have an aspx program on machine a calling a web method on machine b [quoted text, click to view] "Ken Schaefer" wrote:
> IIS itself doesn't use any particular library - that is dependant on your > calling code (e.g. whether it uses WinInet or some other library) > > When you created the SPN for the backend server, did you specift > http/servername:8080 for your SPN? > > Cheers > Ken > > > "Pom" <Pom@discussions.microsoft.com> wrote in message > news:CA1D3836-C881-4896-8560-221EC269A28B@microsoft.com... > >I have implemented kerberos in 3 tiers environnmnet where IIS 6.0 access a > > web services on a separate IIS server. I have properly setup all my SPNs, > > service account etc.. and it work fine. My problem is I have a requirement > > to > > run my webservices server on 8080 web port. I try every combination and I > > can't make it success full. It work if I ran my front-end on 8080 but not > > the > > back-end. I found the following article: > > http://support.microsoft.com/kb/908209/ mentionning that IE: > > > > "the Wininet.dll file does not pass the port number of the target Web site > > when it calls the InitializeSecurityContext function to build the Kerberos > > ticket. This prevents Internet Explorer 6 from using the Kerberos protocol > > to > > connect to multiple Web sites that run on different ports under different > > identities. " > > > > Is IIS doing the same thing as IE when an IIS server contact another IIS > > server on a non-standard port? >
can you provide a complete list of all SPNs that were originally registered,
and that you have now added? Your can use ldifde.exe to query AD If you have created duplicate SPNs, it won't work. Cheers Ken [quoted text, click to view] "Pom" <Pom@discussions.microsoft.com> wrote in message
news:962ACC05-2278-4401-88E2-F7EFD3DE81EC@microsoft.com... > Yes I tried 8080. > > I Have an aspx program on machine a calling a web method on machine b > > "Ken Schaefer" wrote: > >> IIS itself doesn't use any particular library - that is dependant on your >> calling code (e.g. whether it uses WinInet or some other library) >> >> When you created the SPN for the backend server, did you specift >> http/servername:8080 for your SPN? >> >> Cheers >> Ken >> >> >> "Pom" <Pom@discussions.microsoft.com> wrote in message >> news:CA1D3836-C881-4896-8560-221EC269A28B@microsoft.com... >> >I have implemented kerberos in 3 tiers environnmnet where IIS 6.0 access >> >a >> > web services on a separate IIS server. I have properly setup all my >> > SPNs, >> > service account etc.. and it work fine. My problem is I have a >> > requirement >> > to >> > run my webservices server on 8080 web port. I try every combination and >> > I >> > can't make it success full. It work if I ran my front-end on 8080 but >> > not >> > the >> > back-end. I found the following article: >> > http://support.microsoft.com/kb/908209/ mentionning that IE: >> > >> > "the Wininet.dll file does not pass the port number of the target Web >> > site >> > when it calls the InitializeSecurityContext function to build the >> > Kerberos >> > ticket. This prevents Internet Explorer 6 from using the Kerberos >> > protocol >> > to >> > connect to multiple Web sites that run on different ports under >> > different >> > identities. " >> > >> > Is IIS doing the same thing as IE when an IIS server contact another >> > IIS >> > server on a non-standard port? >> >>
It is not an issue because I test the situation in 2 different environment:
one at home and one at work. Thers is no way I would have made the same errors [quoted text, click to view] "Ken Schaefer" wrote:
> can you provide a complete list of all SPNs that were originally registered, > and that you have now added? Your can use ldifde.exe to query AD > > If you have created duplicate SPNs, it won't work. > > Cheers > Ken > > "Pom" <Pom@discussions.microsoft.com> wrote in message > news:962ACC05-2278-4401-88E2-F7EFD3DE81EC@microsoft.com... > > Yes I tried 8080. > > > > I Have an aspx program on machine a calling a web method on machine b > > > > "Ken Schaefer" wrote: > > > >> IIS itself doesn't use any particular library - that is dependant on your > >> calling code (e.g. whether it uses WinInet or some other library) > >> > >> When you created the SPN for the backend server, did you specift > >> http/servername:8080 for your SPN? > >> > >> Cheers > >> Ken > >> > >> > >> "Pom" <Pom@discussions.microsoft.com> wrote in message > >> news:CA1D3836-C881-4896-8560-221EC269A28B@microsoft.com... > >> >I have implemented kerberos in 3 tiers environnmnet where IIS 6.0 access > >> >a > >> > web services on a separate IIS server. I have properly setup all my > >> > SPNs, > >> > service account etc.. and it work fine. My problem is I have a > >> > requirement > >> > to > >> > run my webservices server on 8080 web port. I try every combination and > >> > I > >> > can't make it success full. It work if I ran my front-end on 8080 but > >> > not > >> > the > >> > back-end. I found the following article: > >> > http://support.microsoft.com/kb/908209/ mentionning that IE: > >> > > >> > "the Wininet.dll file does not pass the port number of the target Web > >> > site > >> > when it calls the InitializeSecurityContext function to build the > >> > Kerberos > >> > ticket. This prevents Internet Explorer 6 from using the Kerberos > >> > protocol > >> > to > >> > connect to multiple Web sites that run on different ports under > >> > different > >> > identities. " > >> > > >> > Is IIS doing the same thing as IE when an IIS server contact another > >> > IIS > >> > server on a non-standard port? > >> > >> >
OK - then please give us a list of everything that you are 100% sure about.
Then we can test what you are not 100% sure about. As mentioned if you create a new SPN, but don't remove an old SPN that overlaps or is the same, then you get duplicate SPN issue and Kerberos fails. That is why I asked for a list of all SPNs (you can query via LDIDFE). But if you are 100% sure that you do not have a duplicate SPN issue, then I suggest that you tell us what other things ou are 100% sure about, so we don't waste anymore time. Cheers Ken [quoted text, click to view] "Pom" <Pom@discussions.microsoft.com> wrote in message
news:94C752F7-4A90-4CA9-8DBA-AD630554604F@microsoft.com... > It is not an issue because I test the situation in 2 different > environment: > one at home and one at work. Thers is no way I would have made the same > errors > > "Ken Schaefer" wrote: > >> can you provide a complete list of all SPNs that were originally >> registered, >> and that you have now added? Your can use ldifde.exe to query AD >> >> If you have created duplicate SPNs, it won't work. >> >> Cheers >> Ken >> >> "Pom" <Pom@discussions.microsoft.com> wrote in message >> news:962ACC05-2278-4401-88E2-F7EFD3DE81EC@microsoft.com... >> > Yes I tried 8080. >> > >> > I Have an aspx program on machine a calling a web method on machine b >> > >> > "Ken Schaefer" wrote: >> > >> >> IIS itself doesn't use any particular library - that is dependant on >> >> your >> >> calling code (e.g. whether it uses WinInet or some other library) >> >> >> >> When you created the SPN for the backend server, did you specift >> >> http/servername:8080 for your SPN? >> >> >> >> Cheers >> >> Ken >> >> >> >> >> >> "Pom" <Pom@discussions.microsoft.com> wrote in message >> >> news:CA1D3836-C881-4896-8560-221EC269A28B@microsoft.com... >> >> >I have implemented kerberos in 3 tiers environnmnet where IIS 6.0 >> >> >access >> >> >a >> >> > web services on a separate IIS server. I have properly setup all my >> >> > SPNs, >> >> > service account etc.. and it work fine. My problem is I have a >> >> > requirement >> >> > to >> >> > run my webservices server on 8080 web port. I try every combination >> >> > and >> >> > I >> >> > can't make it success full. It work if I ran my front-end on 8080 >> >> > but >> >> > not >> >> > the >> >> > back-end. I found the following article: >> >> > http://support.microsoft.com/kb/908209/ mentionning that IE: >> >> > >> >> > "the Wininet.dll file does not pass the port number of the target >> >> > Web >> >> > site >> >> > when it calls the InitializeSecurityContext function to build the >> >> > Kerberos >> >> > ticket. This prevents Internet Explorer 6 from using the Kerberos >> >> > protocol >> >> > to >> >> > connect to multiple Web sites that run on different ports under >> >> > different >> >> > identities. " >> >> > >> >> > Is IIS doing the same thing as IE when an IIS server contact another >> >> > IIS >> >> > server on a non-standard port? >> >> >> >> >> >>
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