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OSPF multicast traffic gets droped

DanielKrueger

Hello,


I'm playing with OSPF on a UTM 105, config has been done but the firewall seems to block all multicast conversation traffic.


What's missing?

10:39:39 Default DROP OSPFIGP  
192.168.10.1    
→
224.0.0.5    
 
len=68 ttl=1 tos=0x00 srcmac=00:1a:8c:40:5e:d5
10:39:41 Default DROP OSPFIGP  
192.168.10.1    
→
224.0.0.5    
 
len=64 ttl=1 tos=0x00 srcmac=00:1a:8c:40:5e:d5

10:39:41 Default DROP OSPFIGP  
100.1.3.1    
→
224.0.0.5    
 
len=64 ttl=1 tos



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  • Hi Daniel,

     

    I've being able to replicate this problem as well. I flushed iptables and set all tables to allow and stopped dropping packets. In my case I was using a tunnel interface. I'm found a post on there that talks about
    needing the right object on the allow rule for OSPF ( you added a rule right? from interface object to neighour IP and 224.0.0.5 service proto 89 ) This object needs to be an interface object rather than network or any other type of object. I would check your rules and confirm. I'll 
    be doing write up on my setup later today to help everyone else.

    Regards,

    Peter Tiggerdine

Reply

  • Hi Daniel,

     

    I've being able to replicate this problem as well. I flushed iptables and set all tables to allow and stopped dropping packets. In my case I was using a tunnel interface. I'm found a post on there that talks about
    needing the right object on the allow rule for OSPF ( you added a rule right? from interface object to neighour IP and 224.0.0.5 service proto 89 ) This object needs to be an interface object rather than network or any other type of object. I would check your rules and confirm. I'll 
    be doing write up on my setup later today to help everyone else.

    Regards,

    Peter Tiggerdine

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