Netwox, the Network Toolbox

Packet Storm posted word of a new release of Laurent Constanin's Netwox. I had never tried it before, but was aware of the project from articles like Linux Security and elsewhere.

The Network Toolbox consists of three components: Netwib, a network library; Netwox, the collection of 150+ tools, and Netwag, a Tcl/Tk interface. Given that Sguil is also written in Tcl/Tk, I was interested in trying out this tool.

If you just run Netwox, you'll be presented by a series of menus which help you select the proper command line switches to use various tools. In the following example I use the menus to eventually see how Netwox recognizes the NICs in my workstation: 

 drury:/usr/local/src/netw-ib-ox-ag-5.19.0/src/netwag-src/src$ sudo netwox

 Netwox toolbox version 5.19.0. Netwib library version 5.19.0.

 

 ######################## MAIN MENU #########################

  0 - leave netwox

  3 - search tools' title

  4 - display help of one tool

  5 - run a tool selecting parameters on command line

  6 - run a tool selecting parameters from keyboard

  a + information

  b + network protocol

  c + application protocol

  d + sniff

  e + spoof

  f + record

  g + client

  h + server

  i + tools not related to network

  j + administrators' tools

  k + attack tools

 Select a node (key in 03456abcdefghijk): a

 

 

 ####################### information ########################

  0 - leave netwox

  1 - go to main menu

  2 - go to previous menu

  3 - search tools' title

  4 - display help of one tool

  5 - run a tool selecting parameters on command line

  6 - run a tool selecting parameters from keyboard

  a + information on local computer

  b + information on remote computer

  c + information on netw

 Select a node (key in 0123456abc): a

 

 ############## information on local computer ###############

  0 - leave netwox

  1 - go to main menu

  2 - go to previous menu

  3 - search tools' title

  4 - display help of one tool

  5 - run a tool selecting parameters on command line

  6 - run a tool selecting parameters from keyboard

  a - 1:Display network configuration

 Select a node (key in 0123456a): a

 

 ################## help for tool number 1 ##################

 Title: Display network configuration

 Note: If no option is set, they are all displayed

 Usage: netwox 1 [-d] [-i] [-a] [-r]

  name type                      description {example}

  -d|--devices|+d|--no-devices   display devices {0}

  -i|--ip|+i|--no-ip             display ip addresses {0}

  -a|--arpcache|+a|--no-arpcache display arp cache and neighbors {0}

  -r|--routes|+r|--no-routes     display routes {0}

 Example: netwox 1

 Press 'r' or 'k' to run this tool, or any other key to continue 

 

 ################## running tool number 1 ###################

 Enter optional tool parameters and press Return key.

 netwox 1 

 ################################### Devices ###################################

 nu dev   ethernet_hwtype   mtu   real_device_name

 1  Eth0  00:50:BA:AC:D7:43 1500  rl0

 2  Eth1  02:00:4C:00:00:00 1500  fwe0

 3  Eth2  00:30:48:41:F9:56 1500  fxp0

 4  Pli0  plip              1500  plip0

 5  Lo0   loopback          16384 lo0

 6  Eth3  00:BD:CA:09:00:01 1500  vmnet1

 7  Eth4  00:BD:DC:E3:57:00 1500  vmnet0

 ##################################### IP ######################################

 nu ip             /netmask                    ppp point_to_point_with

 3  10.200.211.99  /255.255.255.0              0

 5  127.0.0.1      /255.0.0.0                  0

 6  192.168.0.1    /255.255.255.0              0

 ############################## ArpCache/Neighbor #############################

 nu ethernet          ip

 3  00:0A:41:C7:BA:80 10.200.211.1

 3  00:30:48:41:F9:56 10.200.211.99

 3  00:C0:4F:61:3F:72 10.200.211.52

 6  00:BD:CA:09:00:01 192.168.0.1

 #################################### Routes ###################################

 nu destination    /netmask         source              gateway           metric

 3  10.200.211.99  /255.255.255.255 local                                      0

 5  127.0.0.1      /255.255.255.255 local                                      0

 6  192.168.0.1    /255.255.255.255 local                                      0

 3  10.200.211.0   /255.255.255.0   10.200.211.99                              0

 6  192.168.0.0    /255.255.255.0   192.168.0.1                                0

 5  127.0.0.0      /255.0.0.0       127.0.0.1                                  0

 Command returned 0 (OK)

 Press 'r' or 'k' to run again this tool, or any other key to continue

I know fxp0 is my main interface, and see Netwox calls it "Eth2". I can use this information to sniff with Netwox once I return to the main menu: 

 Select a node (key in 03456abcdefghijk): d

 

 ########################## sniff ###########################

  0 - leave netwox

  1 - go to main menu

  2 - go to previous menu

  3 - search tools' title

  4 - display help of one tool

  5 - run a tool selecting parameters on command line

  6 - run a tool selecting parameters from keyboard

  a - 7:Sniff

  b - 10:Sniff and display network statistics

  c - 11:Sniff and verify checksums

  d - 13:Obtain DLT type for sniff and spoof for each device

  e - 110:Ethernet bridge limiting flow

 Select a node (key in 0123456abcde): a

 

 ################## help for tool number 7 ##################

 Title: Sniff

 Usage: netwox 7 [-d device] [-f filter] [-p] [-H encode] [-D encode] [-r] [-x]

 [-i] [-t] [-s] [-o file] [-R recordencode] [-c uint32] [-C uint32]

  name type                      description {example}

  -d|--device device             device name {Eth0}

  -f|--filter filter             pcap filter

  -p|--pause|+p|--no-pause       can pause {0}

  -H|--hdrencode encode          header encoding type for screen {array}

  -D|--dataencode encode         data encoding type for screen {dump}

  -r|--rawip|+r|--no-rawip       sniff at IP level {0}

  -x|--extended|+x|--no-extended display other protocols (dns) {1}

  -i|--ipreas|+i|--no-ipreas     reassemble IP packets {0}

  -t|--tcpreord|+t|--no-tcpreord reorder TCP packets {0}

  -s|--screen|+s|--no-screen     display to screen {1}

  -o|--outfile file              save in record file {dstfile.txt}

  -R|--recordencode recordencode encoding type for record file {bin}

  -c|--split-size uint32         maximum size of record in kb {0}

  -C|--split-age uint32          maximum age of record in seconds {0}

 Example: netwox 7

 Press 'r' or 'k' to run this tool, or any other key to continue 

 ################## running tool number 7 ###################

 Enter optional tool parameters and press Return key.

 netwox 7 -d Eth2 -f icmp

I just told network to sniff for ICMP on interface "Eth2". In the future I could simply run "netwox 7 -d Eth2 -f icmp" and dispense with the menus. Here are the results when I generate ICMP by pinging Google: 

 netwox 7 -d Eth2 -f icmp

 Ethernet________________________________________________________.

 | 00:30:48:41:F9:56->00:0A:41:C7:BA:80 type:0x0800              |

 |_______________________________________________________________|

 IP______________________________________________________________.

 |version|  ihl  |      tos      |            totlen             |

 |___4___|___5___|____0x00=0_____|___________0x0054=84___________|

 |              id               |r|D|M|       offsetfrag        |

 |_________0x3290=12944__________|0|0|0|________0x0000=0_________|

 |      ttl      |   protocol    |           checksum            |

 |____0x40=64____|____0x01=1_____|____________0x6796_____________|

 |                            source                             |

 |_________________________10.200.211.99_________________________|

 |                          destination                          |

 |________________________216.239.41.104_________________________|

 ICMP4_echo request______________________________________________.

 |     type      |     code      |           checksum            |

 |____0x08=8_____|____0x00=0_____|_________0xA3C9=41929__________|

 |              id               |            seqnum             |

 |_________0xC849=51273__________|___________0x0000=0____________|

 | data: 1322f8408e86070008090a0b0c0d0e0f101112131415161718191a1 |

 |       b1c1d1e1f202122232425262728292a2b2c2d2e2f30313233343536 |

 |       37                                                      |

 |_______________________________________________________________|

 

 Ethernet________________________________________________________.

 | 00:0A:41:C7:BA:80->00:30:48:41:F9:56 type:0x0800              |

 |_______________________________________________________________|

 IP______________________________________________________________.

 |version|  ihl  |      tos      |            totlen             |

 |___4___|___5___|____0x00=0_____|___________0x0054=84___________|

 |              id               |r|D|M|       offsetfrag        |

 |_________0x3290=12944__________|0|0|0|________0x0000=0_________|

 |      ttl      |   protocol    |           checksum            |

 |___0xF3=243____|____0x01=1_____|____________0xB495_____________|

 |                            source                             |

 |________________________216.239.41.104_________________________|

 |                          destination                          |

 |_________________________10.200.211.99_________________________|

 ICMP4_echo reply________________________________________________.

 |     type      |     code      |           checksum            |

 |____0x00=0_____|____0x00=0_____|_________0xABC9=43977__________|

 |              id               |            seqnum             |

 |_________0xC849=51273__________|___________0x0000=0____________|

 | data: 1322f8408e86070008090a0b0c0d0e0f101112131415161718191a1 |

 |       b1c1d1e1f202122232425262728292a2b2c2d2e2f30313233343536 |

 |       37                                                      |

 |_______________________________________________________________|

This unique format is one of the cooler aspects of Netwox.



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