ssltap(category5-qmail.html) - phpMan

SSLTAP(1)                     NSS Security Tools                     SSLTAP(1)

NAME
       ssltap - Tap into SSL connections and display the data going by
SYNOPSIS
       ssltap [-fhlsvx] [-p port] [hostname:port]
STATUS
       This documentation is still work in progress. Please contribute to the
       initial review in Mozilla NSS bug 836477[1]
DESCRIPTION
       The SSL Debugging Tool ssltap is an SSL-aware command-line proxy. It
       watches TCP connections and displays the data going by. If a connection
       is SSL, the data display includes interpreted SSL records and
       handshaking
OPTIONS
       -f
           Turn on fancy printing. Output is printed in colored HTML. Data
           sent from the client to the server is in blue; the server's reply
           is in red. When used with looping mode, the different connections
           are separated with horizontal lines. You can use this option to
           upload the output into a browser.
       -h
           Turn on hex/ASCII printing. Instead of outputting raw data, the
           command interprets each record as a numbered line of hex values,
           followed by the same data as ASCII characters. The two parts are
           separated by a vertical bar. Nonprinting characters are replaced by
           dots.
       -l prefix
           Turn on looping; that is, continue to accept connections rather
           than stopping after the first connection is complete.
       -p port
           Change the default rendezvous port (1924) to another port.
           The following are well-known port numbers:
           * HTTP 80
           * HTTPS 443
           * SMTP 25
           * FTP 21
           * IMAP 143
           * IMAPS 993 (IMAP over SSL)
           * NNTP 119
           * NNTPS 563 (NNTP over SSL)
       -s
           Turn on SSL parsing and decoding. The tool does not automatically
           detect SSL sessions. If you are intercepting an SSL connection, use
           this option so that the tool can detect and decode SSL structures.
           If the tool detects a certificate chain, it saves the DER-encoded
           certificates into files in the current directory. The files are
           named cert.0x, where x is the sequence number of the certificate.
           If the -s option is used with -h, two separate parts are printed
           for each record: the plain hex/ASCII output, and the parsed SSL
           output.
       -v
           Print a version string for the tool.
       -x
           Turn on extra SSL hex dumps.
USAGE AND EXAMPLES
       You can use the SSL Debugging Tool to intercept any connection
       information. Although you can run the tool at its most basic by issuing
       the ssltap command with no options other than hostname:port, the
       information you get in this way is not very useful. For example, assume
       your development machine is called intercept. The simplest way to use
       the debugging tool is to execute the following command from a command
       shell:
           $ ssltap www.netscape.com
       The program waits for an incoming connection on the default port 1924.
       In your browser window, enter the URL http://intercept:1924. The
       browser retrieves the requested page from the server at
       www.netscape.com, but the page is intercepted and passed on to the
       browser by the debugging tool on intercept. On its way to the browser,
       the data is printed to the command shell from which you issued the
       command. Data sent from the client to the server is surrounded by the
       following symbols: --> [ data ] Data sent from the server to the client
       is surrounded by the following symbols: "left arrow"-- [ data ] The raw
       data stream is sent to standard output and is not interpreted in any
       way. This can result in peculiar effects, such as sounds, flashes, and
       even crashes of the command shell window. To output a basic, printable
       interpretation of the data, use the -h option, or, if you are looking
       at an SSL connection, the -s option. You will notice that the page you
       retrieved looks incomplete in the browser. This is because, by default,
       the tool closes down after the first connection is complete, so the
       browser is not able to load images. To make the tool continue to accept
       connections, switch on looping mode with the -l option. The following
       examples show the output from commonly used combinations of options.
       Example 1
           $ ssltap.exe -sx -p 444 interzone.mcom.com:443 > sx.txt
       Output
           Connected to interzone.mcom.com:443
           -->; [
           alloclen = 66 bytes
              [ssl2]  ClientHelloV2 {
                       version = {0x03, 0x00}
                       cipher-specs-length = 39 (0x27)
                       sid-length = 0 (0x00)
                       challenge-length = 16 (0x10)
                       cipher-suites = {
                           (0x010080) SSL2/RSA/RC4-128/MD5
                             (0x020080) SSL2/RSA/RC4-40/MD5
                             (0x030080) SSL2/RSA/RC2CBC128/MD5
                             (0x040080) SSL2/RSA/RC2CBC40/MD5
                             (0x060040) SSL2/RSA/DES64CBC/MD5
                             (0x0700c0) SSL2/RSA/3DES192EDE-CBC/MD5
                             (0x000004) SSL3/RSA/RC4-128/MD5
                             (0x00ffe0) SSL3/RSA-FIPS/3DES192EDE-CBC/SHA
                             (0x00000a) SSL3/RSA/3DES192EDE-CBC/SHA
                             (0x00ffe1) SSL3/RSA-FIPS/DES64CBC/SHA
                             (0x000009) SSL3/RSA/DES64CBC/SHA
                             (0x000003) SSL3/RSA/RC4-40/MD5
                             (0x000006) SSL3/RSA/RC2CBC40/MD5
                             }
                       session-id = { }
                       challenge = { 0xec5d 0x8edb 0x37c9 0xb5c9 0x7b70 0x8fe9 0xd1d3
           0x2592 }
           }
           ]
           <-- [
           SSLRecord {
              0: 16 03 00 03  e5                                   |.....
              type    = 22 (handshake)
              version = { 3,0 }
              length  = 997 (0x3e5)
              handshake {
              0: 02 00 00 46                                      |...F
                 type = 2 (server_hello)
                 length = 70 (0x000046)
                       ServerHello {
                       server_version = {3, 0}
                       random = {...}
              0: 77 8c 6e 26  6c 0c ec c0  d9 58 4f 47  d3 2d 01 45  |
           wn&l.i..XOG.-.E
              10: 5c 17 75 43  a7 4c 88 c7  88 64 3c 50  41 48 4f 7f  |
           \.uCSL.C.d<PAHO.
                             session ID = {
                             length = 32
                           contents = {..}
              0: 14 11 07 a8  2a 31 91 29  11 94 40 37  57 10 a7 32  | ..."*1.).. AT 7W.S2
              10: 56 6f 52 62  fe 3d b3 65  b1 e4 13 0f  52 a3 c8 f6  | VoRbb=3e+-...RLE.
                    }
                          cipher_suite = (0x0003) SSL3/RSA/RC4-40/MD5
                    }
              0: 0b 00 02 c5                                      |...A
                 type = 11 (certificate)
                 length = 709 (0x0002c5)
                       CertificateChain {
                       chainlength = 706 (0x02c2)
                          Certificate {
                       size = 703 (0x02bf)
                          data = { saved in file 'cert.001' }
                       }
                    }
              0: 0c 00 00 ca                                      |....
                    type = 12 (server_key_exchange)
                    length = 202 (0x0000ca)
              0: 0e 00 00 00                                      |....
                    type = 14 (server_hello_done)
                    length = 0 (0x000000)
              }
           }
           ]
           --> [
           SSLRecord {
              0: 16 03 00 00  44                                   |....D
              type    = 22 (handshake)
              version = { 3,0 }
              length  = 68 (0x44)
              handshake {
              0: 10 00 00 40                                      |...@
              type = 16 (client_key_exchange)
              length = 64 (0x000040)
                    ClientKeyExchange {
                       message = {...}
                    }
              }
           }
           ]
           --> [
           SSLRecord {
              0: 14 03 00 00  01                                   |.....
              type    = 20 (change_cipher_spec)
              version = { 3,0 }
              length  = 1 (0x1)
              0: 01                                               |.
           }
           SSLRecord {
              0: 16 03 00 00  38                                   |....8
              type    = 22 (handshake)
              version = { 3,0 }
              length  = 56 (0x38)
                          < encrypted >
           }
           ]
           <-- [
           SSLRecord {
              0: 14 03 00 00  01                                   |.....
              type    = 20 (change_cipher_spec)
              version = { 3,0 }
              length  = 1 (0x1)
              0: 01                                               |.
           }
           ]
           <-- [
           SSLRecord {
              0: 16 03 00 00  38                                   |....8
              type    = 22 (handshake)
              version = { 3,0 }
              length  = 56 (0x38)
                             < encrypted >
           }
           ]
           --> [
           SSLRecord {
              0: 17 03 00 01  1f                                   |.....
              type    = 23 (application_data)
              version = { 3,0 }
              length  = 287 (0x11f)
                          < encrypted >
           }
           ]
           <-- [
           SSLRecord {
              0: 17 03 00 00  a0                                   |....
              type    = 23 (application_data)
              version = { 3,0 }
              length  = 160 (0xa0)
                          < encrypted >
           }
           ]
           <-- [
           SSLRecord {
           0: 17 03 00 00  df                                   |....B
              type    = 23 (application_data)
              version = { 3,0 }
              length  = 223 (0xdf)
                          < encrypted >
           }
           SSLRecord {
              0: 15 03 00 00  12                                   |.....
              type    = 21 (alert)
              version = { 3,0 }
              length  = 18 (0x12)
                          < encrypted >
           }
           ]
           Server socket closed.
       Example 2
       The -s option turns on SSL parsing. Because the -x option is not used
       in this example, undecoded values are output as raw data. The output is
       routed to a text file.
           $ ssltap -s  -p 444 interzone.mcom.com:443 > s.txt
       Output
           Connected to interzone.mcom.com:443
           --> [
           alloclen = 63 bytes
              [ssl2]  ClientHelloV2 {
                       version = {0x03, 0x00}
                       cipher-specs-length = 36 (0x24)
                       sid-length = 0 (0x00)
                       challenge-length = 16 (0x10)
                       cipher-suites = {
                             (0x010080) SSL2/RSA/RC4-128/MD5
                             (0x020080) SSL2/RSA/RC4-40/MD5
                             (0x030080) SSL2/RSA/RC2CBC128/MD5
                             (0x060040) SSL2/RSA/DES64CBC/MD5
                             (0x0700c0) SSL2/RSA/3DES192EDE-CBC/MD5
                             (0x000004) SSL3/RSA/RC4-128/MD5
                             (0x00ffe0) SSL3/RSA-FIPS/3DES192EDE-CBC/SHA
                             (0x00000a) SSL3/RSA/3DES192EDE-CBC/SHA
                             (0x00ffe1) SSL3/RSA-FIPS/DES64CBC/SHA
                             (0x000009) SSL3/RSA/DES64CBC/SHA
                             (0x000003) SSL3/RSA/RC4-40/MD5
                             }
                          session-id = { }
                       challenge = { 0x713c 0x9338 0x30e1 0xf8d6 0xb934 0x7351 0x200c
           0x3fd0 }
           ]
           >-- [
           SSLRecord {
              type    = 22 (handshake)
              version = { 3,0 }
              length  = 997 (0x3e5)
              handshake {
                    type = 2 (server_hello)
                    length = 70 (0x000046)
                       ServerHello {
                       server_version = {3, 0}
                       random = {...}
                       session ID = {
                          length = 32
                          contents = {..}
                          }
                          cipher_suite = (0x0003) SSL3/RSA/RC4-40/MD5
                       }
                    type = 11 (certificate)
                    length = 709 (0x0002c5)
                       CertificateChain {
                          chainlength = 706 (0x02c2)
                          Certificate {
                             size = 703 (0x02bf)
                             data = { saved in file 'cert.001' }
                          }
                       }
                    type = 12 (server_key_exchange)
                    length = 202 (0x0000ca)
                    type = 14 (server_hello_done)
                    length = 0 (0x000000)
              }
           }
           ]
           --> [
           SSLRecord {
              type    = 22 (handshake)
              version = { 3,0 }
              length  = 68 (0x44)
              handshake {
                    type = 16 (client_key_exchange)
                    length = 64 (0x000040)
                       ClientKeyExchange {
                          message = {...}
                       }
              }
           }
           ]
           --> [
           SSLRecord {
              type    = 20 (change_cipher_spec)
              version = { 3,0 }
              length  = 1 (0x1)
           }
           SSLRecord {
              type    = 22 (handshake)
              version = { 3,0 }
              length  = 56 (0x38)
                          > encrypted >
           }
           ]
           >-- [
           SSLRecord {
              type    = 20 (change_cipher_spec)
              version = { 3,0 }
              length  = 1 (0x1)
           }
           ]
           >-- [
           SSLRecord {
              type    = 22 (handshake)
              version = { 3,0 }
              length  = 56 (0x38)
                          > encrypted >
           }
           ]
           --> [
           SSLRecord {
              type    = 23 (application_data)
              version = { 3,0 }
              length  = 287 (0x11f)
                          > encrypted >
           }
           ]
           [
           SSLRecord {
              type    = 23 (application_data)
              version = { 3,0 }
              length  = 160 (0xa0)
                          > encrypted >
           }
           ]
           >-- [
           SSLRecord {
              type    = 23 (application_data)
              version = { 3,0 }
              length  = 223 (0xdf)
                          > encrypted >
           }
           SSLRecord {
              type    = 21 (alert)
              version = { 3,0 }
              length  = 18 (0x12)
                          > encrypted >
           }
           ]
           Server socket closed.
       Example 3
       In this example, the -h option turns hex/ASCII format. There is no SSL
       parsing or decoding. The output is routed to a text file.
           $ ssltap -h  -p 444 interzone.mcom.com:443 > h.txt
       Output
           Connected to interzone.mcom.com:443
           --> [
              0: 80 40 01 03  00 00 27 00  00 00 10 01  00 80 02 00  | .@....'.........
              10: 80 03 00 80  04 00 80 06  00 40 07 00  c0 00 00 04  | .........@......
              20: 00 ff e0 00  00 0a 00 ff  e1 00 00 09  00 00 03 00  | ........a.......
              30: 00 06 9b fe  5b 56 96 49  1f 9f ca dd  d5 ba b9 52  | ..b[V.I.\xd9 ...o1R
              40: 6f 2d                                            |o-
           ]
           <-- [
              0: 16 03 00 03  e5 02 00 00  46 03 00 7f  e5 0d 1b 1d  | ........F.......
              10: 68 7f 3a 79  60 d5 17 3c  1d 9c 96 b3  88 d2 69 3b  | h.:y`..<..3.Oi;
              20: 78 e2 4b 8b  a6 52 12 4b  46 e8 c2 20  14 11 89 05  | x.K.|R.KFe. ...
              30: 4d 52 91 fd  93 e0 51 48  91 90 08 96  c1 b6 76 77  | MR.y..QH.....9|vw
              40: 2a f4 00 08  a1 06 61 a2  64 1f 2e 9b  00 03 00 0b  | *o..i.acd......
              50: 00 02 c5 00  02 c2 00 02  bf 30 82 02  bb 30 82 02  | ..A......0...0..
              60: 24 a0 03 02  01 02 02 02  01 36 30 0d  06 09 2a 86  | $ .......60...*.
              70: 48 86 f7 0d  01 01 04 05  00 30 77 31  0b 30 09 06  | H.-:-......0w1.0..
              80: 03 55 04 06  13 02 55 53  31 2c 30 2a  06 03 55 04  | .U....US1,0*..U.
              90: 0a 13 23 4e  65 74 73 63  61 70 65 20  43 6f 6d 6d  | ..#Netscape Comm
              a0: 75 6e 69 63  61 74 69 6f  6e 73 20 43  6f 72 70 6f  | unications Corpo
              b0: 72 61 74 69  6f 6e 31 11  30 0f 06 03  55 04 0b 13  | ration1.0...U...
              c0: 08 48 61 72  64 63 6f 72  65 31 27 30  25 06 03 55  | .Hardcore1'0%..U
              d0: 04 03 13 1e  48 61 72 64  63 6f 72 65  20 43 65 72  | ....Hardcore Cer
              e0: 74 69 66 69  63 61 74 65  20 53 65 72  76 65 72 20  | tificate Server
              f0: 49 49 30 1e  17 0d 39 38  30 35 31 36  30 31 30 33  | II0...9805160103
           <additional data lines>
           ]
           <additional records in same format>
           Server socket closed.
       Example 4
       In this example, the -s option turns on SSL parsing, and the -h option
       turns on hex/ASCII format. Both formats are shown for each record. The
       output is routed to a text file.
           $ ssltap -hs -p 444 interzone.mcom.com:443 > hs.txt
       Output
           Connected to interzone.mcom.com:443
           --> [
              0: 80 3d 01 03  00 00 24 00  00 00 10 01  00 80 02 00  | .=....$.........
              10: 80 03 00 80  04 00 80 06  00 40 07 00  c0 00 00 04  | .........@......
              20: 00 ff e0 00  00 0a 00 ff  e1 00 00 09  00 00 03 03  | ........a.......
              30: 55 e6 e4 99  79 c7 d7 2c  86 78 96 5d  b5 cf e9     |U..yC\xb0 ,.x.]uIe
           alloclen = 63 bytes
              [ssl2]  ClientHelloV2 {
                       version = {0x03, 0x00}
                       cipher-specs-length = 36 (0x24)
                       sid-length = 0 (0x00)
                       challenge-length = 16 (0x10)
                       cipher-suites = {
                             (0x010080) SSL2/RSA/RC4-128/MD5
                             (0x020080) SSL2/RSA/RC4-40/MD5
                             (0x030080) SSL2/RSA/RC2CBC128/MD5
                             (0x040080) SSL2/RSA/RC2CBC40/MD5
                             (0x060040) SSL2/RSA/DES64CBC/MD5
                             (0x0700c0) SSL2/RSA/3DES192EDE-CBC/MD5
                             (0x000004) SSL3/RSA/RC4-128/MD5
                             (0x00ffe0) SSL3/RSA-FIPS/3DES192EDE-CBC/SHA
                             (0x00000a) SSL3/RSA/3DES192EDE-CBC/SHA
                             (0x00ffe1) SSL3/RSA-FIPS/DES64CBC/SHA
                             (0x000009) SSL3/RSA/DES64CBC/SHA
                             (0x000003) SSL3/RSA/RC4-40/MD5
                             }
                       session-id = { }
                       challenge = { 0x0355 0xe6e4 0x9979 0xc7d7 0x2c86 0x7896 0x5db
           0xcfe9 }
           }
           ]
           <additional records in same formats>
           Server socket closed.
USAGE TIPS
       When SSL restarts a previous session, it makes use of cached
       information to do a partial handshake. If you wish to capture a full
       SSL handshake, restart the browser to clear the session id cache.
       If you run the tool on a machine other than the SSL server to which you
       are trying to connect, the browser will complain that the host name you
       are trying to connect to is different from the certificate. If you are
       using the default BadCert callback, you can still connect through a
       dialog. If you are not using the default BadCert callback, the one you
       supply must allow for this possibility.
SEE ALSO
       The NSS Security Tools are also documented at
       http://www.mozilla.org/projects/security/pki/nss/[2].
ADDITIONAL RESOURCES
       For information about NSS and other tools related to NSS (like JSS),
       check out the NSS project wiki at
       http://www.mozilla.org/projects/security/pki/nss/. The NSS site relates
       directly to NSS code changes and releases.
       Mailing lists: https://lists.mozilla.org/listinfo/dev-tech-crypto
       IRC: Freenode at #dogtag-pki
AUTHORS
       The NSS tools were written and maintained by developers with Netscape,
       Red Hat, Sun, Oracle, Mozilla, and Google.
       Authors: Elio Maldonado <emaldona AT redhat.com>, Deon Lackey
       <dlackey AT redhat.com>.
LICENSE
       Licensed under the Mozilla Public License, v. 2.0. If a copy of the MPL
       was not distributed with this file, You can obtain one at
       http://mozilla.org/MPL/2.0/.
NOTES
        1. Mozilla NSS bug 836477
           https://bugzilla.mozilla.org/show_bug.cgi?id=836477
        2. http://www.mozilla.org/projects/security/pki/nss/
           http://www.mozilla.org/projects/security/pki/nss/tools

nss-tools 3.90.0                  Nov 13 2013                        SSLTAP(1)