Problems allowing outgoing multicast in ufw












1














I am having problems configuring the uncomplicated firewall (ufw) to allow outgoing multicast traffic. I am blocking all in and outgoing connections as the default policy. I have supplemented with the rules listed below. Yet, I get these error messages repeated twice after every time I boot the system:



Errors (repeated twice on boot-up):




[UFW BLOCK] IN= OUT=eth0 SRC=192.168.0.2 DST=224.0.0.22 LEN=40 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2



[UFW BLOCK] IN= OUT=eth0 SRC=fe80:0000:0000:0000:f66d:feee:feee:feee DST=ff02:0000:0000:0000:0000:0000:0000:0002 LEN=56 TC=0 HOPLIMIT=255 FLOWLBL=0 PROTO=ICMPv6 TYPE=133 CODE=0



[UFW BLOCK] IN= OUT=eth0 SRC=fe80:0000:0000:0000:f66d:04ff:feee:df54 DST=ff02:0000:0000:0000:0000:0000:0000:0016 LEN=96 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=ICMPv6 TYPE=143 CODE=0




Main rules:



ufw allow out proto udp to 224.0.0.0/3
ufw allow out proto udp to ff00::/8
ufw allow in proto udp to 224.0.0.0/3
ufw allow in proto udp to ff00::/8


in



/etc/ufw/user.rules:
-A ufw-before-input -p igmp -d 224.0.0.0/3 -j ACCEPT
-A ufw-before-output -p igmp -d 224.0.0.0/3 -j ACCEPT


and in



/etc/ufw/user6.rules:
-A ufw6-before-input -p icmpv6 -d ff00::/8 -j ACCEPT
-A ufw6-before-output -p icmpv6 -d ff00::/8 -j ACCEPT









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  • Please note that the multicast range is not 224.0.0.0/3. It is 224.0.0.0/4 because the addresses from 240.0.0.0 up are not multicast.
    – ssb
    Apr 1 '14 at 18:38
















1














I am having problems configuring the uncomplicated firewall (ufw) to allow outgoing multicast traffic. I am blocking all in and outgoing connections as the default policy. I have supplemented with the rules listed below. Yet, I get these error messages repeated twice after every time I boot the system:



Errors (repeated twice on boot-up):




[UFW BLOCK] IN= OUT=eth0 SRC=192.168.0.2 DST=224.0.0.22 LEN=40 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2



[UFW BLOCK] IN= OUT=eth0 SRC=fe80:0000:0000:0000:f66d:feee:feee:feee DST=ff02:0000:0000:0000:0000:0000:0000:0002 LEN=56 TC=0 HOPLIMIT=255 FLOWLBL=0 PROTO=ICMPv6 TYPE=133 CODE=0



[UFW BLOCK] IN= OUT=eth0 SRC=fe80:0000:0000:0000:f66d:04ff:feee:df54 DST=ff02:0000:0000:0000:0000:0000:0000:0016 LEN=96 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=ICMPv6 TYPE=143 CODE=0




Main rules:



ufw allow out proto udp to 224.0.0.0/3
ufw allow out proto udp to ff00::/8
ufw allow in proto udp to 224.0.0.0/3
ufw allow in proto udp to ff00::/8


in



/etc/ufw/user.rules:
-A ufw-before-input -p igmp -d 224.0.0.0/3 -j ACCEPT
-A ufw-before-output -p igmp -d 224.0.0.0/3 -j ACCEPT


and in



/etc/ufw/user6.rules:
-A ufw6-before-input -p icmpv6 -d ff00::/8 -j ACCEPT
-A ufw6-before-output -p icmpv6 -d ff00::/8 -j ACCEPT









share|improve this question
























  • Please note that the multicast range is not 224.0.0.0/3. It is 224.0.0.0/4 because the addresses from 240.0.0.0 up are not multicast.
    – ssb
    Apr 1 '14 at 18:38














1












1








1







I am having problems configuring the uncomplicated firewall (ufw) to allow outgoing multicast traffic. I am blocking all in and outgoing connections as the default policy. I have supplemented with the rules listed below. Yet, I get these error messages repeated twice after every time I boot the system:



Errors (repeated twice on boot-up):




[UFW BLOCK] IN= OUT=eth0 SRC=192.168.0.2 DST=224.0.0.22 LEN=40 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2



[UFW BLOCK] IN= OUT=eth0 SRC=fe80:0000:0000:0000:f66d:feee:feee:feee DST=ff02:0000:0000:0000:0000:0000:0000:0002 LEN=56 TC=0 HOPLIMIT=255 FLOWLBL=0 PROTO=ICMPv6 TYPE=133 CODE=0



[UFW BLOCK] IN= OUT=eth0 SRC=fe80:0000:0000:0000:f66d:04ff:feee:df54 DST=ff02:0000:0000:0000:0000:0000:0000:0016 LEN=96 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=ICMPv6 TYPE=143 CODE=0




Main rules:



ufw allow out proto udp to 224.0.0.0/3
ufw allow out proto udp to ff00::/8
ufw allow in proto udp to 224.0.0.0/3
ufw allow in proto udp to ff00::/8


in



/etc/ufw/user.rules:
-A ufw-before-input -p igmp -d 224.0.0.0/3 -j ACCEPT
-A ufw-before-output -p igmp -d 224.0.0.0/3 -j ACCEPT


and in



/etc/ufw/user6.rules:
-A ufw6-before-input -p icmpv6 -d ff00::/8 -j ACCEPT
-A ufw6-before-output -p icmpv6 -d ff00::/8 -j ACCEPT









share|improve this question















I am having problems configuring the uncomplicated firewall (ufw) to allow outgoing multicast traffic. I am blocking all in and outgoing connections as the default policy. I have supplemented with the rules listed below. Yet, I get these error messages repeated twice after every time I boot the system:



Errors (repeated twice on boot-up):




[UFW BLOCK] IN= OUT=eth0 SRC=192.168.0.2 DST=224.0.0.22 LEN=40 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2



[UFW BLOCK] IN= OUT=eth0 SRC=fe80:0000:0000:0000:f66d:feee:feee:feee DST=ff02:0000:0000:0000:0000:0000:0000:0002 LEN=56 TC=0 HOPLIMIT=255 FLOWLBL=0 PROTO=ICMPv6 TYPE=133 CODE=0



[UFW BLOCK] IN= OUT=eth0 SRC=fe80:0000:0000:0000:f66d:04ff:feee:df54 DST=ff02:0000:0000:0000:0000:0000:0000:0016 LEN=96 TC=0 HOPLIMIT=1 FLOWLBL=0 PROTO=ICMPv6 TYPE=143 CODE=0




Main rules:



ufw allow out proto udp to 224.0.0.0/3
ufw allow out proto udp to ff00::/8
ufw allow in proto udp to 224.0.0.0/3
ufw allow in proto udp to ff00::/8


in



/etc/ufw/user.rules:
-A ufw-before-input -p igmp -d 224.0.0.0/3 -j ACCEPT
-A ufw-before-output -p igmp -d 224.0.0.0/3 -j ACCEPT


and in



/etc/ufw/user6.rules:
-A ufw6-before-input -p icmpv6 -d ff00::/8 -j ACCEPT
-A ufw6-before-output -p icmpv6 -d ff00::/8 -j ACCEPT






networking firewall iptables ufw






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edited Sep 13 '14 at 12:22









guntbert

9,078133069




9,078133069










asked Feb 6 '13 at 18:58









Aeyoun

493835




493835












  • Please note that the multicast range is not 224.0.0.0/3. It is 224.0.0.0/4 because the addresses from 240.0.0.0 up are not multicast.
    – ssb
    Apr 1 '14 at 18:38


















  • Please note that the multicast range is not 224.0.0.0/3. It is 224.0.0.0/4 because the addresses from 240.0.0.0 up are not multicast.
    – ssb
    Apr 1 '14 at 18:38
















Please note that the multicast range is not 224.0.0.0/3. It is 224.0.0.0/4 because the addresses from 240.0.0.0 up are not multicast.
– ssb
Apr 1 '14 at 18:38




Please note that the multicast range is not 224.0.0.0/3. It is 224.0.0.0/4 because the addresses from 240.0.0.0 up are not multicast.
– ssb
Apr 1 '14 at 18:38










2 Answers
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SRC=fe80:0000:0000:0000:f66d:04ff:feee:df54

DST=ff02:0000:0000:0000:0000:0000:0000:0016



I think that this numbers must be within of the number ff00::/8. I don't know if them are.



Or maybe you want to try "My UPnP player can not see MediaTomb, what is wrong?"'s rules. Though them be for a necessity that seems the inverse...






share|improve this answer































    0














    I have seen similar messages in the log an did the following:



    to



    /etc/ufw/before.rules


    I added



    # allow igmp codes from my local sub-net
    -A ufw-before-input -p igmp -m ttl --ttl-eq 1 -j ACCEPT


    and to



    /etc/ufw/before6.rules

    # allow multicast group membership maintenance
    -A ufw6-before-output -p icmpv6 --icmpv6-type 130 -m hl --hl-eq 1 -j ACCEPT
    -A ufw6-before-output -p icmpv6 --icmpv6-type 131 -m hl --hl-eq 1 -j ACCEPT
    -A ufw6-before-output -p icmpv6 --icmpv6-type 132 -m hl --hl-eq 1 -j ACCEPT
    -A ufw6-before-output -p icmpv6 --icmpv6-type 143 -m hl --hl-eq 1 -j ACCEPT


    and



    # allow multicast group membership maintenance go in as well
    -A ufw6-before-input -p icmpv6 --icmpv6-type 130 -j ACCEPT
    -A ufw6-before-input -p icmpv6 --icmpv6-type 131 -j ACCEPT
    -A ufw6-before-input -p icmpv6 --icmpv6-type 132 -j ACCEPT
    -A ufw6-before-input -p icmpv6 --icmpv6-type 143 -j ACCEPT


    Note however that the messages blocked where group membership queries from the local router, i have no actual programm running that use IP multicast at all.
    But the log entries are gone after all.






    share|improve this answer























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      2 Answers
      2






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      2 Answers
      2






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      active

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      0














      SRC=fe80:0000:0000:0000:f66d:04ff:feee:df54

      DST=ff02:0000:0000:0000:0000:0000:0000:0016



      I think that this numbers must be within of the number ff00::/8. I don't know if them are.



      Or maybe you want to try "My UPnP player can not see MediaTomb, what is wrong?"'s rules. Though them be for a necessity that seems the inverse...






      share|improve this answer




























        0














        SRC=fe80:0000:0000:0000:f66d:04ff:feee:df54

        DST=ff02:0000:0000:0000:0000:0000:0000:0016



        I think that this numbers must be within of the number ff00::/8. I don't know if them are.



        Or maybe you want to try "My UPnP player can not see MediaTomb, what is wrong?"'s rules. Though them be for a necessity that seems the inverse...






        share|improve this answer


























          0












          0








          0






          SRC=fe80:0000:0000:0000:f66d:04ff:feee:df54

          DST=ff02:0000:0000:0000:0000:0000:0000:0016



          I think that this numbers must be within of the number ff00::/8. I don't know if them are.



          Or maybe you want to try "My UPnP player can not see MediaTomb, what is wrong?"'s rules. Though them be for a necessity that seems the inverse...






          share|improve this answer














          SRC=fe80:0000:0000:0000:f66d:04ff:feee:df54

          DST=ff02:0000:0000:0000:0000:0000:0000:0016



          I think that this numbers must be within of the number ff00::/8. I don't know if them are.



          Or maybe you want to try "My UPnP player can not see MediaTomb, what is wrong?"'s rules. Though them be for a necessity that seems the inverse...







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited May 11 '14 at 0:59

























          answered May 11 '14 at 0:48









          Alexandre

          8114




          8114

























              0














              I have seen similar messages in the log an did the following:



              to



              /etc/ufw/before.rules


              I added



              # allow igmp codes from my local sub-net
              -A ufw-before-input -p igmp -m ttl --ttl-eq 1 -j ACCEPT


              and to



              /etc/ufw/before6.rules

              # allow multicast group membership maintenance
              -A ufw6-before-output -p icmpv6 --icmpv6-type 130 -m hl --hl-eq 1 -j ACCEPT
              -A ufw6-before-output -p icmpv6 --icmpv6-type 131 -m hl --hl-eq 1 -j ACCEPT
              -A ufw6-before-output -p icmpv6 --icmpv6-type 132 -m hl --hl-eq 1 -j ACCEPT
              -A ufw6-before-output -p icmpv6 --icmpv6-type 143 -m hl --hl-eq 1 -j ACCEPT


              and



              # allow multicast group membership maintenance go in as well
              -A ufw6-before-input -p icmpv6 --icmpv6-type 130 -j ACCEPT
              -A ufw6-before-input -p icmpv6 --icmpv6-type 131 -j ACCEPT
              -A ufw6-before-input -p icmpv6 --icmpv6-type 132 -j ACCEPT
              -A ufw6-before-input -p icmpv6 --icmpv6-type 143 -j ACCEPT


              Note however that the messages blocked where group membership queries from the local router, i have no actual programm running that use IP multicast at all.
              But the log entries are gone after all.






              share|improve this answer




























                0














                I have seen similar messages in the log an did the following:



                to



                /etc/ufw/before.rules


                I added



                # allow igmp codes from my local sub-net
                -A ufw-before-input -p igmp -m ttl --ttl-eq 1 -j ACCEPT


                and to



                /etc/ufw/before6.rules

                # allow multicast group membership maintenance
                -A ufw6-before-output -p icmpv6 --icmpv6-type 130 -m hl --hl-eq 1 -j ACCEPT
                -A ufw6-before-output -p icmpv6 --icmpv6-type 131 -m hl --hl-eq 1 -j ACCEPT
                -A ufw6-before-output -p icmpv6 --icmpv6-type 132 -m hl --hl-eq 1 -j ACCEPT
                -A ufw6-before-output -p icmpv6 --icmpv6-type 143 -m hl --hl-eq 1 -j ACCEPT


                and



                # allow multicast group membership maintenance go in as well
                -A ufw6-before-input -p icmpv6 --icmpv6-type 130 -j ACCEPT
                -A ufw6-before-input -p icmpv6 --icmpv6-type 131 -j ACCEPT
                -A ufw6-before-input -p icmpv6 --icmpv6-type 132 -j ACCEPT
                -A ufw6-before-input -p icmpv6 --icmpv6-type 143 -j ACCEPT


                Note however that the messages blocked where group membership queries from the local router, i have no actual programm running that use IP multicast at all.
                But the log entries are gone after all.






                share|improve this answer


























                  0












                  0








                  0






                  I have seen similar messages in the log an did the following:



                  to



                  /etc/ufw/before.rules


                  I added



                  # allow igmp codes from my local sub-net
                  -A ufw-before-input -p igmp -m ttl --ttl-eq 1 -j ACCEPT


                  and to



                  /etc/ufw/before6.rules

                  # allow multicast group membership maintenance
                  -A ufw6-before-output -p icmpv6 --icmpv6-type 130 -m hl --hl-eq 1 -j ACCEPT
                  -A ufw6-before-output -p icmpv6 --icmpv6-type 131 -m hl --hl-eq 1 -j ACCEPT
                  -A ufw6-before-output -p icmpv6 --icmpv6-type 132 -m hl --hl-eq 1 -j ACCEPT
                  -A ufw6-before-output -p icmpv6 --icmpv6-type 143 -m hl --hl-eq 1 -j ACCEPT


                  and



                  # allow multicast group membership maintenance go in as well
                  -A ufw6-before-input -p icmpv6 --icmpv6-type 130 -j ACCEPT
                  -A ufw6-before-input -p icmpv6 --icmpv6-type 131 -j ACCEPT
                  -A ufw6-before-input -p icmpv6 --icmpv6-type 132 -j ACCEPT
                  -A ufw6-before-input -p icmpv6 --icmpv6-type 143 -j ACCEPT


                  Note however that the messages blocked where group membership queries from the local router, i have no actual programm running that use IP multicast at all.
                  But the log entries are gone after all.






                  share|improve this answer














                  I have seen similar messages in the log an did the following:



                  to



                  /etc/ufw/before.rules


                  I added



                  # allow igmp codes from my local sub-net
                  -A ufw-before-input -p igmp -m ttl --ttl-eq 1 -j ACCEPT


                  and to



                  /etc/ufw/before6.rules

                  # allow multicast group membership maintenance
                  -A ufw6-before-output -p icmpv6 --icmpv6-type 130 -m hl --hl-eq 1 -j ACCEPT
                  -A ufw6-before-output -p icmpv6 --icmpv6-type 131 -m hl --hl-eq 1 -j ACCEPT
                  -A ufw6-before-output -p icmpv6 --icmpv6-type 132 -m hl --hl-eq 1 -j ACCEPT
                  -A ufw6-before-output -p icmpv6 --icmpv6-type 143 -m hl --hl-eq 1 -j ACCEPT


                  and



                  # allow multicast group membership maintenance go in as well
                  -A ufw6-before-input -p icmpv6 --icmpv6-type 130 -j ACCEPT
                  -A ufw6-before-input -p icmpv6 --icmpv6-type 131 -j ACCEPT
                  -A ufw6-before-input -p icmpv6 --icmpv6-type 132 -j ACCEPT
                  -A ufw6-before-input -p icmpv6 --icmpv6-type 143 -j ACCEPT


                  Note however that the messages blocked where group membership queries from the local router, i have no actual programm running that use IP multicast at all.
                  But the log entries are gone after all.







                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited Sep 13 '14 at 12:19









                  guntbert

                  9,078133069




                  9,078133069










                  answered Sep 13 '14 at 8:53









                  Lutz

                  1




                  1






























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