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1 | Netcat 1.10 is an updated release of Netcat, a simple Unix utility which reads | ||
2 | and writes data across network connections using TCP or UDP protocol. It is | ||
3 | designed to be a reliable "back-end" tool that can be used directly or easily | ||
4 | driven by other programs and scripts. At the same time it is a feature-rich | ||
5 | network debugging and exploration tool, since it can create almost any kind of | ||
6 | connection you would need and has several interesting built-in capabilities. | ||
7 | |||
8 | Some of netcat's major features are: | ||
9 | |||
10 | Outbound or inbound connections, TCP or UDP, to or from any ports | ||
11 | Full DNS forward/reverse checking, with appropriate warnings | ||
12 | Ability to use any local source port | ||
13 | Ability to use any locally-configured network source address | ||
14 | Built-in port-scanning capabilities, with randomizer | ||
15 | Built-in loose source-routing capability | ||
16 | Can read command line arguments from standard input | ||
17 | Slow-send mode, one line every N seconds | ||
18 | Hex dump of transmitted and received data | ||
19 | Optional ability to let another program service established connections | ||
20 | Optional telnet-options responder | ||
21 | |||
22 | A very short list of potential uses: | ||
23 | |||
24 | Script backends | ||
25 | Scanning ports and inventorying services, automated probes | ||
26 | Backup handlers | ||
27 | File transfers | ||
28 | Server testing, simulation, debugging, and hijacking | ||
29 | Firewall testing | ||
30 | Proxy gatewaying | ||
31 | Network performance testing | ||
32 | Address spoofing tests | ||
33 | Protecting X servers | ||
34 | 1001 other uses you'll likely come up with | ||
35 | |||
36 | Changes between the 1.00 release and this release: | ||
37 | |||
38 | Better portability -- updated generic.h and Makefile [thanx folks!] | ||
39 | Indication of local-end interface address on inbound connections | ||
40 | That's *Dave* Borman's telnet, not Paul Borman... | ||
41 | Better indication of DNS errors | ||
42 | Total byte counts printed if -v -v is used | ||
43 | A bunch of front-end driver companion programs and scripts | ||
44 | Better handling of stdin arguments-plus-data | ||
45 | Hex-dump feature | ||
46 | Telnet responder | ||
47 | Program exec works inbound or outbound now | ||
48 | |||
49 | Netcat and the associated package is a product of Avian Research, and is freely | ||
50 | available in full source form with no restrictions save an obligation to give | ||
51 | credit where due. Get it via anonymous FTP at avian.org:/src/hacks/nc110.tgz | ||
52 | which is a gzipped tar file and not to be confused with its version 1.00 | ||
53 | precursor, nc100.tgz. Other distribution formats can be accomodated upon | ||
54 | request. Netcat is also mirrored at the following [faster] sites: | ||
55 | |||
56 | zippy.telcom.arizona.edu:/pub/mirrors/avian.org/hacks/nc110.tgz | ||
57 | ftp.sterling.com:/mirrors/avian.org/src/hacks/nc110.tgz | ||
58 | coast.cs.purdue.edu:/pub/tools/unix/netcat/nc110.tgz | ||
59 | ftp.rge.com:/pub/security/coast/mirrors/avian.org/netcat/nc110.tgz | ||
60 | |||
61 | _H* 960320 | ||