We have a DSL client who occasionally(2 Days a month) has 4G worth of
downloads.

Looking at the traffic for the affected days, I am seeing the
following...

Port is always random:

./flow-cat -a /netflow/oar/krc3.v5/2004/2004-08/2004-08-02/ |
./flow-filter -f netflow_acls/minter_palm_beach.acl -D subnet |
./flow-stat -f6 -S2|more #  --- ---- ---- Report Information --- --- ---
#
# Fields:    Total
# Symbols:   Disabled
# Sorting:   Descending Field 2
# Name:      UDP/TCP source port
#
# Args:      ./flow-stat -f6 -S2 
#
#
# port      flows                 octets                packets
#
3233        2                     4294967446            3

80          180                   784671                1364         

Flows + Packets are always very minimal, but Octets large:

# ./flow-cat -a /netflow/oar/krc3.v5/2004/2004-08/2004-08-02/ |
./flow-filter -f netflow_acls/minter_palm_beach.acl -D subnet|
./flow-stat -f6 -S2|more #  --- ---- ---- Report Information --- --- ---
#
# Fields:    Total
# Symbols:   Disabled
# Sorting:   Descending Field 2
# Name:      UDP/TCP source port
#
# Args:      ./flow-stat -f6 -S2 
#
#
# port      flows                 octets                packets
#
3233        2                     4294967446            3

80          180                   784671                1364 

Always protocol 6:

./flow-cat -a /netflow/oar/krc3.v5/2004/2004-08/2004-08-02/ |
./flow-filter -f netflow_acls/minter_palm_beach.acl -D subnet|
./flow-stat -f12|more #  --- ---- ---- Report Information --- --- --- #
# Fields:    Total
# Symbols:   Disabled
# Sorting:   None
# Name:      IP protocol
#
# Args:      ./flow-stat -f12 
#
#
# protocol  flows                 octets                packets
#
50          1                     1152                  8

17          282                   101586                325

6           1746                  4296584503            6246

1           75                    4514                  83     

Always from single IP: (This IP is different evertime): 

# ./flow-cat -a /netflow/oar/krc3.v5/2004/2004-08/2004-08-02/ |
./flow-stat -f10 -S3 |grep 203.149.69.54|more
66.183.10.168    203.149.69.54    2                     4294967446
3  

Anyone have any idea what could cause this type of traffic?

Regards,
MB
 
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