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TechnitiumSoftware / DnsServer

Technitium DNS Server
https://technitium.com/dns/
GNU General Public License v3.0
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Errors in Logs #239

Closed Hemsby closed 3 years ago

Hemsby commented 3 years ago

Im seeing this error in the logs

System.IO.EndOfStreamException: Attempted to read past the end of the stream. at TechnitiumLibrary.IO.StreamExtension.ReadBytes(Stream s, Byte[] buffer, Int32 offset, Int32 count) in Z:\Technitium\Projects\TechnitiumLibrary\TechnitiumLibrary.IO\StreamExtension.cs:line 37 at TechnitiumLibrary.Net.Dns.DnsResourceRecord..ctor(Stream s) in Z:\Technitium\Projects\TechnitiumLibrary\TechnitiumLibrary.Net\Dns\DnsResourceRecord.cs:line 228 at TechnitiumLibrary.Net.Dns.DnsDatagram.ReadFromUdp(Stream s) in Z:\Technitium\Projects\TechnitiumLibrary\TechnitiumLibrary.Net\Dns\DnsDatagram.cs:line 188

Hemsby commented 3 years ago

And the other error in the logs is

DnsServerCore.DnsWebServiceException: Invalid username or password: admin at DnsServerCore.DnsWebService.LoginAsync(HttpListenerRequest request, JsonTextWriter jsonWriter) in Z:\Technitium\Projects\DnsServer\DnsServerCore\DnsWebService.cs:line 927 at DnsServerCore.DnsWebService.ProcessRequestAsync(HttpListenerRequest request, HttpListenerResponse response) in Z:\Technitium\Projects\DnsServer\DnsServerCore\DnsWebService.cs:line 686

Allways then followed by a Success

ShreyasZare commented 3 years ago

Im seeing this error in the logs

System.IO.EndOfStreamException: Attempted to read past the end of the stream. at TechnitiumLibrary.IO.StreamExtension.ReadBytes(Stream s, Byte[] buffer, Int32 offset, Int32 count) in Z:\Technitium\Projects\TechnitiumLibrary\TechnitiumLibrary.IO\StreamExtension.cs:line 37 at TechnitiumLibrary.Net.Dns.DnsResourceRecord..ctor(Stream s) in Z:\Technitium\Projects\TechnitiumLibrary\TechnitiumLibrary.Net\Dns\DnsResourceRecord.cs:line 228 at TechnitiumLibrary.Net.Dns.DnsDatagram.ReadFromUdp(Stream s) in Z:\Technitium\Projects\TechnitiumLibrary\TechnitiumLibrary.Net\Dns\DnsDatagram.cs:line 188

Thanks for the feedback. This error is due to the DNS server receiving incomplete or probably corrupt DNS request. The DNS server will respond to such request with Format Error response. These errors are logged just to allow debugging.

ShreyasZare commented 3 years ago

And the other error in the logs is

DnsServerCore.DnsWebServiceException: Invalid username or password: admin at DnsServerCore.DnsWebService.LoginAsync(HttpListenerRequest request, JsonTextWriter jsonWriter) in Z:\Technitium\Projects\DnsServer\DnsServerCore\DnsWebService.cs:line 927 at DnsServerCore.DnsWebService.ProcessRequestAsync(HttpListenerRequest request, HttpListenerResponse response) in Z:\Technitium\Projects\DnsServer\DnsServerCore\DnsWebService.cs:line 686

Allways then followed by a Success

When you open the web console on your web browser, the web console tries to login automatically with default password and if the login succeeds then you see the dashboard immediately with a prompt to change password.

So, when you have the password changed, the first attempt made by the web console javascript code fails to login which generates this error log. This is as expected and also gives you the IP address of the person who just tried to visit your DNS web console as a bonus.

Hemsby commented 3 years ago

Thanks for clarifying! Thanks.