Netbios Domain Name Confusion Disjointed Networking Spiceworks I just wanted to add that for versions of windows from windows 2000 and onward, all of the legacy netbios functionality from ports 137, 138 and 139 is by default handled by smb (server message block) over port 445. A domain is something you will experience on a work network rather than a home environment generally speaking. imagine: computer name john netbios name is usually also john (but has stricter naming restrictions) on a domain your full computer name may be john pany.local for example the company.local bit being the name of the domain itself. netbios is old way of resolving names and in many.
Netbios Name Network Encyclopedia I'm also trying to discover the relationship between netbios ssn typically running on port 139 and microsoft ds running on port 445. i understand that previously port 139 was more popular with ol. Netbios is legacy and you only need it if you are using old applications or old versions of windows that require it or use wins. if your running applications or os's that require it still, netbios is probably not the real problem here. Generally netbios is tied to smbv1 being enabled; if smbv1 is disabled at os level, then netbios features are not used at all. this is interesting, as i have smbv1 disabled in windows on both machines, (appwiz.cpl > turn windows features on or off), however wireshark is definitely showing udp traffic on port 137, marked as 'nbns'. In our local domain environment, we use sophos utm to protect our network. when i check the firewall logs, i can see that a huge number of packets dropped by the firewall are netbios ns (udp 137).
Steps To Find Your Netbios Domain Name Techyv Generally netbios is tied to smbv1 being enabled; if smbv1 is disabled at os level, then netbios features are not used at all. this is interesting, as i have smbv1 disabled in windows on both machines, (appwiz.cpl > turn windows features on or off), however wireshark is definitely showing udp traffic on port 137, marked as 'nbns'. In our local domain environment, we use sophos utm to protect our network. when i check the firewall logs, i can see that a huge number of packets dropped by the firewall are netbios ns (udp 137). Windows machines on a lan use netbios to do host name resolution, not dns. the netbios will not propagate over the vpn without some nasty configuration. You need to clear both the dns and netbios name caches. according to the microsoft support article microsoft tcp ip host name resolution order both are used in windows to cache hostnames.
Steps To Find Your Netbios Domain Name Techyv Windows machines on a lan use netbios to do host name resolution, not dns. the netbios will not propagate over the vpn without some nasty configuration. You need to clear both the dns and netbios name caches. according to the microsoft support article microsoft tcp ip host name resolution order both are used in windows to cache hostnames.
Domain Name Netbios Format Dmainname