Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

Troubleshooting
Research
Professional Opinions
Ask a Question
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

troubleshooting Question

netbios message

Avatar of gs_kanata
gs_kanataFlag for Canada asked on
Unix OSNetworking
9 Comments1 Solution654 ViewsLast Modified:
I have seen continually this message in IPFilter log file.

Jul  2 20:30:33 nas3a ipmon[1753]: [ID 702911 local0.warning] 20:30:32.565073 2x e1000g4 @0:11 b 10.20.30.40,138 -> 10.20.30.255,138 PR udp len 20 250 IN low-ttl

The port 138 belongs netbios according to /etc/services file:

# cat /etc/services | grep 138
netbios-dgm     138/tcp                         # NETBIOS Datagram Service
netbios-dgm     138/udp                         # NETBIOS Datagram Service

So I wondering what the message is trying to do. Is it a broadcast one? Blocking it will have any impact?