Network ngrep 1.40
Posted by guru on August 31st, 2007 at 03:05pm
Goal
To create a program that mimicks as much functionality of GNU grep as possible, applied at the network layer.
Description
ngrep strives to provide most of GNU grep’s common features, applying them to the network layer. ngrep is a pcap-aware tool that will allow you to specify extended regular expressions to match against data payloads of packets. It currently recognizes TCP, UDP and ICMP across Ethernet, PPP, SLIP, FDDI, Token Ring and null interfaces, and understands bpf filter logic in the same fashion as more common packet sniffing tools, such as tcpdump and snoop.
Parameters
ngrep <-hXViwqpevxlDtT> <-IO pcap_dump> <-n num> <-d dev> <-A num> <-s snaplen> <match expression> <bpf filter> -h is help/usage -X is interpret match expression as hexadecimal -V is version information -i is ignore case -w is word-regex (expression must match as a word) -q is be quiet -p is don't go into promiscuous mode -e is show empty packets -v is invert match -x is print in alternate hexdump format -l is make stdout line buffered -D is replay pcap_dumps with their recorded time intervals -t is print timestamp every time a packet is matched -T is print delta timestamp every time a packet is matched -s is set the bpf caplen -I is dump matched packets in pcap format to pcap_dump -O is read packet stream from pcap format file pcap_dump -n is look at only num packets -d is use a device different from the default (pcap) -A is dump num packets after a match <match expression> is either an extended regular expression or a hexadecimal string. see the man page for more information. <bpf filter> is any bpf filter statement. |
Known Working Platforms
- Linux 2.0 - 2.4
- (RH6+, SuSE, TurboLinux, Debian)/x86
- RedHat/alpha
- Debian/powerpc
- Cobalt (Qube2) Linux/MIPS
- Solaris 2.5.1, 2.6/SPARC, Solaris 7/x86, Solaris 8/SPARC
- FreeBSD 2.2.5, 3.1, 3.2, 3.4-RC, 3.4-RELEASE, 4.0
- OpenBSD 2.4 (after upgrading pcap from 0.2)
- NetBSD 1.5/SPARC
- Digital Unix V4.0D (OSF/1)
- Windows 95, Windows 98, Windows NT 4.0, Windows 2000
- HPUX 11
- IRIX
- AIX 4.3.3.0/PowerPC
Examples
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Download ngrep 1.40 (6.6.2001)
Source: ngrep-1.40.tar.gz(646KB)
Man page: ngrep.8.htm (14KB)
Unix Binary: ngrep-1.40-linux-elf-static.gz (196KB)
Mirror Unix Binary: ngrep-1.40-linux-elf-static.gz (196KB)
RPM: ngrep-1.40-1.i386.rpm (68.7KB)
Windows Source: ngrep-1.40-win32-source.zip (130KB - Microsoft Visual C++ project)
Windows Binary: ngrep-1.40-win32-full.zip (197KB - Source + Win32 binary)
Mirror Windows Binary: ngrep-1.40-win32-full.zip (197KB - Source + Win32 binary)
Under Enumeration
5 Comments for Network ngrep 1.40
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