Use arp-scan to scan lan ip addresses

1. install yuminstall-ylibpcaplibpcap-devel before installation. if The yum tool is not installed, install the following package with rpm [root@oradbaarp-scan-1.8] # yumlist | greplibpcaplibpcap. i386 & nbsp 1, which must be installed before installation
Yum install-y libpcap-devel
If the yum tool is not installed
Install the following software package with rpm
[Root @ oradba arp-scan-1.8] # yum list | grep libpcap
Libpcap. i386. 9.4-15. el5 installed
Libpcap. x86_64. 9.4-15. el5 installed
Libpcap-devel.i386. 9.4-15. el5 installed
Libpcap-devel.x86_64. 9.4-15. el5 installed2, download package
Wget http://www.nta-monitor.com/tools/arp-scan/download/arp-scan-1.8.tar.gz
3. Compile the software package
Tar xvf arp-scan-1.8.tar.gz
Cd arp-scan-1.8
./Configure
Make & make install
[Root @ Oracle arp-scan-1.8] # arp-scan-l
Interface: eth0, datalink type: EN10MB (Ethernet)
Starting arp-scan 1.8 with 256 hosts (http://www.nta-monitor.com/tools/arp-scan)
192.168.100.1 00: 24: 1d: 17: d6: e3 GIGA-BYTE technology co., LTD.
192.168.100.4 00: 26: b9: 51: 68: ef Dell Inc // Nic
192.168.100.5 20: cf: 30: 6f: 6f: c6 ASUSTek computer inc.
192.168.100.6 48: 5b: 39: 86: 1c: 62 ASUSTek computer inc.
192.168.100.7 48: 5b: 39: 86: 1c: 3a ASUSTek computer inc.

You can specify which Nic to select if multiple NICs exist.
[Root @ gateway ~] # Arp-scan -- interface = eth1-l
Interface: eth1, datalink type: EN10MB (Ethernet)
Starting arp-scan 1.8 with 256 hosts (http://www.nta-monitor.com/tools/arp-scan)
192.168.100.1 00: 24: 1d: 17: d6: e3 GIGA-BYTE technology co., LTD.
192.168.100.4 00: 26: b9: 51: 68: ef Dell Inc
192.168.100.5 20: cf: 30: 6f: 6f: c6 ASUSTek computer inc.
192.168.100.6 48: 5b: 39: 86: 1c: 62 ASUSTek computer inc.
192.168.100.7 48: 5b: 39: 86: 1c: 3a ASUSTek computer inc.
192.168.100.8 bc: 30: 5b: ad: 74: 22 Dell Inc.
192.168.100.9 00: 26: b9: 8e: 16: 17 Dell Inc
192.168.100.15 00: 26: b9: 35: cf: 63 Dell Inc
192.168.100.17 00: 0c: 29: 08: 6a: 06 VMware, Inc.
192.168.100.18 00: 0c: 29: 08: 6a: 06 VMware, Inc.
192.168.100.19 00: 0c: 29: 08: 6a: 06 VMware, Inc.
192.168.100.20 00: 0c: 29: 08: 6a: 06 VMware, Inc.
192.168.100.22 00: 24: 1d: 17: d6: e3 GIGA-BYTE technology co., LTD.
192.168.100.23 84: 2b: 2b: 59: 31: 4f Dell Inc.
192.168.100.24 00: 26: b9: 8e: 16: 17 Dell Inc

Specify an IP address
[Root @ gateway ~] # Arp-scan -- interface = eth1 192.168.100.0/29
Interface: eth1, datalink type: EN10MB (Ethernet)
Starting arp-scan 1.8 with 8 hosts (http://www.nta-monitor.com/tools/arp-scan)
192.168.100.1 00: 24: 1d: 17: d6: e3 GIGA-BYTE technology co., LTD.
192.168.100.4 00: 26: b9: 51: 68: ef Dell Inc
192.168.100.5 20: cf: 30: 6f: 6f: c6 ASUSTek computer inc.
192.168.100.6 48: 5b: 39: 86: 1c: 62 ASUSTek computer inc.
192.168.100.7 48: 5b: 39: 86: 1c: 3a ASUSTek computer inc.

Update the MAC address so that the Nic of the vendor can be used during scanning.
[Root @ gateway ~] # Get-oui-v
Fetching OUI data from http://standards.ieee.org/regauth/oui/oui.txt
Fetched 2642079 bytes
Opening output file ieee-oui.txt
16445 OUI entries written to file ieee-oui.txt
[Root @ gateway ~] # Get-iab-v
Fetching IAB data from http://standards.ieee.org/regauth/oui/iab.txt
Fetched 608631 bytes
Opening output file ieee-iab.txt
3995 IAB entries written to file ieee-iab.txt

For other usage, refer to arp-scan -- help.