HOWTO Setup
Small / Home Network
5 - Maintenance

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5.1 - LOGS

5.2 - BACKUPS:

5.3 - NETWORK INFORMATION:

These are commands that can be used to find the status of the network.  

5.3.1 - arp

Returns all host IP Addresses and Mac Addresses on network.

# arp (*X)

# arp -a (*DOS & NT)

Example of return:

Address HWtype HWaddress Flags Mask Iface

192.168.1.1 ether 00:30:F1:2D:D7:36 C eth0

192.168.1.36 ether 00:04:5A:69:FA:76 C eth0

5.3.2 - findsmb

Returns all host Microsoft smb on network.

# findsmb (*DOS & NT)

Example of return:

IP ADDR NETBIOS NAME WORKGROUP/OS/VERSION

---------------------------------------------------------------------

Domain=[LINUX_NET] OS=[Unix] Server=[Samba 3.0.10]

192.168.1.7 SAMBA +[ LINUX_NET ]

192.168.2.36 IBM [ LINUX_NET ]

5.3.3 - host -v IP

Returns all host Microsoft smb on network.

5.3.4 - hostname

Returns the local host name / domain name.

$ hostname

5.3.5 - netstat

Dumps active Internet connections & active UNIX domain sockets.

$ netstat

5.3.6 - nmap -sS IP checks ports.

5.3.7 - tcpdump

5.3.8 - ifconfig

Returns DNS cache.

# ifconfig (*X)

# ifconfig /displaydns (*DOS & NT)

Example of return:

eth0 Link encap:Ethernet HWaddr 00:04:48:D1:5A:59

inet addr:192.168.1.7 Bcast:255.255.255.255 Mask:255.255.255.0

inet6 addr: fe80::204:5aff:fe59:48d1/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:3204291 errors:0 dropped:0 overruns:0 frame:0

TX packets:2291316 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:99460819 (94.8 Mb) TX bytes:198689870 (189.4 Mb)

Interrupt:10 Base address:0xb800

lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

inet6 addr: ::1/128 Scope:Host

UP LOOPBACK RUNNING MTU:16436 Metric:1

RX packets:12752 errors:0 dropped:0 overruns:0 frame:0

TX packets:12752 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:1996051 (1.9 Mb) TX bytes:1996051 (1.9 Mb)

5.3.9 - route

Returns Routing table.

# route (*X)

# route print (*DOS & NT)

Example of return:

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

192.168.1.0 * 255.255.255.0 U 0 0 0 eth0

127.0.0.0 * 255.0.0.0 U 0 0 0 lo

default 192.168.1.254 0.0.0.0 UG 0 0 0 eth0

5.3.10 - Connection Speed

This site, Speakeasy Speedtest, will check your connections speed.

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Updated;   This page was last updated on Mar 16 , 2007 .