Loop 127.0.0.1 dpt=53

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  • #44100

    Vale
    Member

    [ITA]
    Ciao a tutti, ho Zeroshell su una virtuale e mi controlla il traffico di tutta la sottorete virtuale (Un ottimo firewall). Utilizzo il Qos senza il NetBalancer ed il firewall per gestire i virtual server.
    La configurazione è abbastanza semplice ed anche la rete.
    Ad intervalli regolari si crea un loop di pacchetti udp da 127.0.0.1 a 127.0.0.1 sulla porta 53 (bind), avviene con named avviato, o killato. L’evento crea dalle 500 alle 5000 connessioni.
    Ho provato ad usare il firewall per impedire all’ip 127.0.0.1 di aprire connessioni dirette a 53 con esito negativo.
    Sembra essere un problema di bandwidthd ma con QOS disabilitato il problema persiste.
    Non capisco se è un bug e non so come risolverlo.

    Grazie!

    [ENG]
    Hello everyone, I have a virtual ZeroShell and I control the traffic of all the virtual subnet (A good firewall). Use the QoS without NetBalancer and firewall to manage virtual servers.
    The configuration is quite simple and also the network.
    At regular intervals, creating a loop of UDP packets from 127.0.0.1 to 127.0.0.1 on port 53 (bind), is named started with, or killed. The event creates between 500 and 5000 connections.
    I tried to use the firewall to prevent IP 127.0.0.1 to open direct connections to 53 with negative results.
    It seems to be a problem of bandwidthd but with QoS disabled the problem persists.
    I do not know if it’s a bug and I do not know how to solve it.

    Thanks!

    > Named KILLED <
    udp 17 24 src=127.0.0.1 dst=127.0.0.1 sport=32830 dport=53 packets=1 bytes=73 [UNREPLIED] src=127.0.0.1 dst=127.0.0.1 sport=53 dport=32830 packets=0 bytes=0 mark=0 use=1
    udp 17 21 src=127.0.0.1 dst=127.0.0.1 sport=57044 dport=53 packets=1 bytes=73 [UNREPLIED] src=127.0.0.1 dst=127.0.0.1 sport=53 dport=57044 packets=0 bytes=0 mark=0 use=1
    udp 17 22 src=127.0.0.1 dst=127.0.0.1 sport=36864 dport=53 packets=1 bytes=72 [UNREPLIED] src=127.0.0.1 dst=127.0.0.1 sport=53 dport=36864 packets=0 bytes=0 mark=0 use=1
    udp 17 24 src=127.0.0.1 dst=127.0.0.1 sport=39821 dport=53 packets=1 bytes=70 [UNREPLIED] src=127.0.0.1 dst=127.0.0.1 sport=53 dport=39821 packets=0 bytes=0 mark=0 use=1
    udp 17 24 src=127.0.0.1 dst=127.0.0.1 sport=56382 dport=53 packets=1 bytes=71 [UNREPLIED] src=127.0.0.1 dst=127.0.0.1 sport=53 dport=56382 packets=0 bytes=0 mark=0 use=1

    > Named Started <
    udp 17 2 src=127.0.0.1 dst=127.0.0.1 sport=54499 dport=53 packets=1 bytes=71 src=127.0.0.1 dst=127.0.0.1 sport=53 dport=54499 packets=1 bytes=202 mark=0 use=1
    udp 17 11 src=127.0.0.1 dst=127.0.0.1 sport=38291 dport=53 packets=1 bytes=72 src=127.0.0.1 dst=127.0.0.1 sport=53 dport=38291 packets=1 bytes=192 mark=0 use=1
    udp 17 24 src=127.0.0.1 dst=127.0.0.1 sport=43971 dport=53 packets=1 bytes=71 src=127.0.0.1 dst=127.0.0.1 sport=53 dport=43971 packets=1 bytes=143 mark=0 use=1
    udp 17 26 src=127.0.0.1 dst=127.0.0.1 sport=56138 dport=53 packets=1 bytes=73 src=127.0.0.1 dst=127.0.0.1 sport=53 dport=56138 packets=1 bytes=136 mark=0 use=1
    udp 17 3 src=127.0.0.1 dst=127.0.0.1 sport=43354 dport=53 packets=1 bytes=73 src=127.0.0.1 dst=127.0.0.1 sport=53 dport=43354 packets=1 bytes=255 mark=0 use=1

    root@firewall ~> netstat -anp | grep :53 | grep ESTABLISHED
    tcp 0 0 10.1.2.2:22 10.1.2.1:53718 ESTABLISHED 27378/0
    udp 704 0 127.0.0.1:58945 127.0.0.1:53 ESTABLISHED 19026/bandwidthd
    udp 0 704 5.249.135.46:11860 199.7.91.13:53 ESTABLISHED 30489/named
    udp 0 704 5.249.135.46:11871 62.221.132.142:53 ESTABLISHED 30489/named
    udp 0 704 5.249.135.46:6791 83.222.161.131:53 ESTABLISHED 30489/named
    udp 0 704 5.249.135.46:30896 69.171.255.12:53 ESTABLISHED 30489/named
    udp 0 704 5.249.135.46:2744 62.221.132.142:53 ESTABLISHED 30489/named
    udp 0 704 5.249.135.46:33493 68.180.131.16:53 ESTABLISHED 30489/named
    udp 0 704 5.249.135.46:42282 69.171.255.12:53 ESTABLISHED 30489/named
    udp 0 704 5.249.135.46:53130 199.7.91.13:53 ESTABLISHED 30489/named
    udp 0 704 5.249.135.46:12222 213.192.59.34:53 ESTABLISHED 30489/named
    udp 0 0 127.0.0.1:43980 127.0.0.1:53 ESTABLISHED 7120/bandwidthd
    udp 704 0 127.0.0.1:54737 127.0.0.1:53 ESTABLISHED 773/bandwidthd

    VBox Assignement:
    CPU2.2ghz x 4
    Ram 2GB

    #53552

    Vale
    Member

    Risolto disabilitando il bandwidthd monitor.

    Solved, disable banwidthd monitor.

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