topic Cannot connect to DNS server over NBSS socket for port 139 in Network and Storage Protocols https://community.netapp.com/t5/Network-and-Storage-Protocols/Cannot-connect-to-DNS-server-over-NBSS-socket-for-port-139/m-p/39488#M3637 <HTML><HEAD></HEAD><BODY><P>hi All, </P><P></P><P>i see the below error message on the filer.</P><P></P><P>[NAS02:nbt.nbss.socketError:error]: NBT: Cannot connect to server 192.23.47.238 over NBSS socket for port 139. Error 0x41: No route to host.</P><P></P><P>i see the filer can ping both the DNS servers.</P><P>did any one had same type of issue wrt DNS server connection ?</P><P></P><P>thanks in advance</P></BODY></HTML> Thu, 05 Jun 2025 06:25:50 GMT VKALVEMULA 2025-06-05T06:25:50Z Cannot connect to DNS server over NBSS socket for port 139 https://community.netapp.com/t5/Network-and-Storage-Protocols/Cannot-connect-to-DNS-server-over-NBSS-socket-for-port-139/m-p/39488#M3637 <HTML><HEAD></HEAD><BODY><P>hi All, </P><P></P><P>i see the below error message on the filer.</P><P></P><P>[NAS02:nbt.nbss.socketError:error]: NBT: Cannot connect to server 192.23.47.238 over NBSS socket for port 139. Error 0x41: No route to host.</P><P></P><P>i see the filer can ping both the DNS servers.</P><P>did any one had same type of issue wrt DNS server connection ?</P><P></P><P>thanks in advance</P></BODY></HTML> Thu, 05 Jun 2025 06:25:50 GMT https://community.netapp.com/t5/Network-and-Storage-Protocols/Cannot-connect-to-DNS-server-over-NBSS-socket-for-port-139/m-p/39488#M3637 VKALVEMULA 2025-06-05T06:25:50Z Re: Cannot connect to DNS server over NBSS socket for port 139 https://community.netapp.com/t5/Network-and-Storage-Protocols/Cannot-connect-to-DNS-server-over-NBSS-socket-for-port-139/m-p/39493#M3639 <HTML><HEAD></HEAD><BODY><P>Any followup to this?</P></BODY></HTML> Thu, 16 Aug 2012 16:49:54 GMT https://community.netapp.com/t5/Network-and-Storage-Protocols/Cannot-connect-to-DNS-server-over-NBSS-socket-for-port-139/m-p/39493#M3639 WillFulmer 2012-08-16T16:49:54Z Re: Cannot connect to DNS server over NBSS socket for port 139 https://community.netapp.com/t5/Network-and-Storage-Protocols/Cannot-connect-to-DNS-server-over-NBSS-socket-for-port-139/m-p/39497#M3641 <HTML><HEAD></HEAD><BODY><P>139 is a CIFS port, DNS operates off TCP/UDP 53. Is 192.23.47.238 a windows server?</P></BODY></HTML> Fri, 17 Aug 2012 15:03:35 GMT https://community.netapp.com/t5/Network-and-Storage-Protocols/Cannot-connect-to-DNS-server-over-NBSS-socket-for-port-139/m-p/39497#M3641 darraghos 2012-08-17T15:03:35Z Re: Cannot connect to DNS server over NBSS socket for port 139 https://community.netapp.com/t5/Network-and-Storage-Protocols/Cannot-connect-to-DNS-server-over-NBSS-socket-for-port-139/m-p/39501#M3643 <HTML><HEAD></HEAD><BODY><P>That error indicates a NetBIOS over TCP/IP connection problem. The filer is trying to connect via CIFS so the 192.23.47.238 address should be running Windows/Samba or something similar.</P><P></P><P>Can you ping from the filer's console to 192.23.47.238? Is it running Windows file sharing? Is there a firewall blocking ports 135-139 or 445 (all used for Windows file sharing in various ways)?</P><P></P><P>This error has nothing to do with DNS.</P></BODY></HTML> Fri, 17 Aug 2012 16:51:19 GMT https://community.netapp.com/t5/Network-and-Storage-Protocols/Cannot-connect-to-DNS-server-over-NBSS-socket-for-port-139/m-p/39501#M3643 jeremypage 2012-08-17T16:51:19Z