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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for August 14th, 2017

Mikrotik UDP port 5678 usage is for MikroTik Neighbor Discovery Protocol (MNDP)

Posted by jpluimers on 2017/08/14

Just in case you see UDP port 5678 in the firewall log of your MikroTik device: it’s usage of the MikroTik Neighbor Discovery Protocol (MNDP) [WayBack] protocol.

You can either block Neighbour Discovery [WayBack] in the firewall or turn it off on the MikroTik Services [WayBack] or inspect any of these protocols:

Proto/Port Description
20/tcp FTP data connection
21/tcp FTP control connection
22/tcp Secure Shell (SSH) remote Login protocol
23/tcp Telnet protocol
67/udp Bootstrap protocol or DHCP Server
68/udp Bootstrap protocol or DHCP Client
80/tcp World Wide Web HTTP
123/udp Network Time Protocol ( NTP)
161/udp Simple Network Management Protocol (SNMP)
179/tcp Border Gateway Protocol ( BGP)
443/tcp Secure Socket Layer (SSL) encrypted HTTP
500/udp Internet Key Exchange (IKE) protocol
RIP routing protocol
646/tcp LDP transport session
646/udp LDP hello protocol
1080/tcp SOCKS proxy protocol
1698/udp 1699/udp RSVP TE Tunnels
1701/udp Layer 2 Tunnel Protocol ( L2TP)
1723/tcp Point-To-Point Tunneling Protocol ( PPTP)
Universal Plug and Play ( uPnP)
1966/udp MME originator message traffic
1966/tcp MME gateway protocol
2000/tcp Bandwidth test server
5246,5247/udp CAPsMan
5678/udp Mikrotik Neighbor Discovery Protocol
6343/tcp Default OpenFlow port
8080/tcp HTTP Web Proxy
8291/tcp Winbox
8728/tcp API
8729/tcp API-SSL
20561/udp MAC winbox
/2 Multicast | IGMP
/4 IPIP encapsulation
/41 IPv6 (encapsulation)
/46 RSVP TE tunnels
/47 General Routing Encapsulation (GRE) – used for PPTP and EoIP tunnels
/50 Encapsulating Security Payload for IPv4 (ESP)
/51 Authentication Header for IPv4 (AH)
/89 OSPF routing protocol
/103 Multicast | PIM
/112 VRRP


Posted in Internet, MikroTik, Power User, routers | Leave a Comment »

Play to Chromecast from VLC 3.0 on Mac OS X (OS X, macOS, or whatever other names apple comes up with)

Posted by jpluimers on 2017/08/14

On my Mac OS X machine, I got this to work with the 20170731 nightly of VLC 3.0.

[WayBackHow to stream from VLC to Your Chromecast (3.0 Updated Version) – VLC Media Player only explains the steps for Windows and Android, probably because they were the first platforms supported by VLC to render on Chromecast: [WayBackHow to Stream Videos from VLC to Chromecast (Including on Windows, Mac & Android) / [WayBackHow to Stream From VLC to Your Chromecast

To make it easier for end-users, on other platforms the menu entries are different.

  • Windows: Menu Video -> Render
  • Mac: Menu Playback -> Renderer (not Render as shown in some posts)
  • Linux: No UI yet.

I found this via [WayBackLatest VLC 3 Nightly Streams to Chromecast Perfectly! : Chromecast and [WayBackHow do I stream to Chromecast using VLC? – Unix & Linux Stack Exchange

On Linux, there is the command-line for now (which works on OS X and Windows as well), or if you insist: use MKChromecast as described in [WayBackHow To Cast Video from Ubuntu to a Chromecast – OMG! Ubuntu!. [WayBack]Mkchromecast This is a program to cast your macOS X, or Linux audio to your Google Cast or Sonos devices with sources at

On Windows and Mac OS X, after choosing the Render, the steps are the same:

  1. Choose Render discovery on
  2. Choose a Chromecast device
  3. Accept the security certificate for it

Download: [WayBack via [WayBack

I didn’t need [WayBack] 


Posted in Chromecast, Google, Media, Media Streaming, Power User, Video | Leave a Comment »

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