INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Would appreciate a pointer to learning material

Would appreciate a pointer to learning material

(OP)
I've gone through some self teaching on networking and have
a basic grasp of addressing, ports and basic firewall rule setting but frequently when I allow the firewall to query whether certain communication should be allowed, I come across communication which I am not sure where it originates (directly from the internal port eg router or somewhere else nor whether the communication should be allowed eg:

'Generic Host Process for Win32 Services' from your computer wants to send UDP datagram to 255.255.255.255, port 67
application:  c:\windows\system32\svchost.exe

Application: 'Tcpip Kernel Driver'; protocol: [2]; Remote address 239.255.255.250: Unknown event
application: tcpip kernel driver

'Generic Host Process for Win32 Services' from your computer wants to send UDP datagram to 239.255.255.250, port 1900
application: c:\windows\system32\svchost.exe

Application: 'Tcpip Kernel Driver'; protocol: [2]; Remote address 224.0.0.2: Unknown event
application: tcpip kernel driver

Could someone point me in the right direction as to where/which material I should dig into and what tools can be used to understand this better ?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Resources

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close