We're trying to add in some firewall rules to allow access to some microsoft servers from an extremely limited vlan. one of the URLs is crl.microsoft.com. When adding it in, everything looks fine until the url is completed then it gives an error that it must be valid input. changing it to crd.microsoft.com is fine, crl.microsoft.co shows fine, but crl.microsoft.com shows an error. Any ideas what would cause this?
it does :
;QUESTION crl.microsoft.co. IN A ;ANSWER crl.microsoft.co. 3600 IN A 104.215.95.187 crl.microsoft.co. 3600 IN A 52.164.206.56
I just tested it in my lab and it works.
No idea how you are getting this error, that's curious
That's odd since I already have 2 these in my firewall rules. I deleted them and re-added without problems.
When you get an invalid input error, it usually means there is an illegal character is in the input. I have been caught out before with either a leading or trailing space.
Copy and paste the text to something like notepad. Save it with an encoding of ANSI (or ASCII, depending on your editor) to strip out unicode charcaters.
Double-check there are no trailing spaces, and then copy and paste it back in again.
It seems to work for me.
Is this an ordinary outbound L3 firewall rule, or something else?
