How can I do this? Please, help me

[Leandro Sales - Estagiário GTI]

Hi folks...

    I'm configuring Firewall in the server running Conectiva Linux 6.0 (Brazil) 
and I already configured to accept connections in the ports:

netbios-ns      137/tcp                         # NETBIOS Name Service
netbios-ns      137/udp
netbios-dgm     138/tcp                         # NETBIOS Datagram Service
netbios-dgm     138/udp
netbios-ssn     139/tcp                         # NETBIOS session service
netbios-ssn     139/udp

    I'm using the IPCHAINS and I configured in this way:


ipchains -A input  -i $EXTERNAL_INTERFACE \
-s $ANYWHERE $NETBIOSPORTS -p tcp \
-d $IPADDR $NETBIOSPORTS -j ACCEPT

ipchains -A output -i $EXTERNAL_INTERFACE \
-s $IPADDR $NETBIOSPORTS -p tcp \
-d $ANYWHERE $NETBIOSPORTS -j ACCEPT

ipchains -A input  -i $EXTERNAL_INTERFACE \
-s $ANYWHERE $NETBIOSPORTS -p udp \
-d $IPADDR $NETBIOSPORTS -j ACCEPT

ipchains -A output -i $EXTERNAL_INTERFACE \
-s $IPADDR $NETBIOSPORTS -p udp \
-d $ANYWHERE $NETBIOSPORTS -j ACCEPT

Please, if someone knows what is happen, please, anwser me...

Thanks...


                   Leandro Melo de Sales.
CEFET/AL - Centro Federal de Educação Tecnológica de Alagoas
    Estagiário GTI - Gerência de Tecnologia da Informação



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