Linux Network Security Course by Michel Bisson

By Michel Bisson

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Example text

These values are: Normal­Service (decimal value 0, hex value 0x00) Minimize­Cost (decimal value 2, hex 0x02) Maximize­Reliability (decimal value 4, hex value 0x04) Maximize­Throughput (decimal value 8, hex value 0x08) Minimize­Delay (decimal value 16, hex value 0x10) The default value on most packets are Normal­Service, or 0. Note that you can, of course, use the actual names instead of the actual hex values to set up the TOS value, and it should generally be recommended since the values behind the names may be changed if you are unlucky.

For example, if you want some_big_clients in delay # pool 1 and lotsa_little_clients in delay pool 2: # #Example: # delay_access 1 allow some_big_clients # delay_access 1 deny all # delay_access 2 allow lotsa_little_clients # delay_access 2 deny all # #Default: # none # TAG: delay_parameters # This defines the parameters for a delay pool. Each delay pool has # a number of "buckets" associated with it, as explained in the # description of delay_class. 2007 Michel Bisson #delay_parameters pool aggregate # # For a class 2 delay pool: # #delay_parameters pool aggregate individual # # For a class 3 delay pool: # #delay_parameters pool aggregate network individual # # The variables here are: # # pool a pool number.

2007 Michel Bisson Full implementation of TOS modifications I have left a few sections commented out, as im not sure if I need them. ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 23 ­j TOS ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­sport 23 ­j TOS ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 22 ­j TOS ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­sport 22 ­j TOS ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 20 ­j TOS ­­set­tos \ Maximize­Throughput ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­sport 20 ­j TOS ­­set­tos \ Maximize­Throughput ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 21 ­j TOS ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p udp ­­dport 53 ­j TOS ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 53 ­j TOS ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 25 ­j TOS ­­set­tos Minimize­Cost ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 110 ­j TOS ­­set­tos Normal­Service ${IPTABLES} ­t mangle ­A PREROUTING ­p icmp ­j TOS ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 5190 ­j TOS ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 4000 ­j TOS ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p udp ­­dport 4000 ­j TOS ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 6666:6667 ­j TOS \ ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 1214 ­j TOS ­­set­tos Minimize­Cost ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 6699 ­j TOS ­­set­tos Minimize­Cost ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 6700 ­j TOS ­­set­tos Minimize­Cost ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­dport 1412 ­j TOS \ ­­set­tos Maximize­Throughput ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­sport 1412 ­j TOS \ ­­set­tos Maximize­Throughput ${IPTABLES} ­t mangle ­A PREROUTING ­p udp ­­dport 4000:7000 ­j TOS \ ­­set­tos Minimize­Delay ${IPTABLES} ­t mangle ­A PREROUTING ­p tcp ­­sport 80 ­j TOS ­­set­tos Minimize­Cost ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ I have also put together a simple but quite effective QOS script which you may want to put into your /etc/ppp/ip-up script This script was put together from a number of other scripts I found on the internet.

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