Red Hat NETSCAPE ENTREPRISE SERVER 6.1 - 08-2002 ADMINISTRATOR Technical Information download pdf (Page 102)

90 Deploying Samba on IBM Eserver BladeCenter

5.6 Viewing NetBIOS network traffic

There are times when the only way to debug is to view the network traffic. There are several

tools that come with most Linux distributions for doing this. The most popular is tcpdump,

because it has been around the longest. Because some versions of tcpdump do not handle

NetBIOS traffic and other versions do not produce very useful output, we are going to use

another popular tool, ethereal.

5.6.1 Installing ethereal

Depending on how the server was installed, ethereal may already be installed. Check using

the command:

rpm -q etheral

If nothing is returned, then install it from the distribution CDs. Ethereal was installed from the

install server using the command shown in Example 5-16.

Example 5-16 Installing ethereal from install server

linux:~ # rpm -ivh

ftp://portal1/pub/SLES8/disc2/UnitedLinux/i586/ethereal-0.9.6-65.i586.rpm

Retrieving ftp://portal1/pub/SLES8/disc2/UnitedLinux/i586/ethereal-0.9.6-65.i586.rpm

ethereal ##################################################

linux:~ # rpm -q ethereal

ethereal-0.9.6-65

5.6.2 Using ethereal

The rpm installs a GUI and non-GUI version of network protocol analyzers. We are going to

use the non-GUI version, tethereal, because the traffic can be viewed live and many servers

are not installed with X11 support.

Find the active network interfaced using the ifconfig command as shown in Example 5-17.

Example 5-17 Output of ifconfig

[root@blade5 root]# ifconfig

eth1 Link encap:Ethernet HWaddr 00:09:6B:00:12:61

inet addr:9.24.104.65 Bcast:9.24.105.255 Mask:255.255.254.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:12690 errors:0 dropped:0 overruns:0 frame:0

TX packets:4493 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:100

RX bytes:2973404 (2.8 Mb) TX bytes:1458873 (1.3 Mb)

Interrupt:17

lo Link encap:Local Loopback

inet addr:127.0.0.1 Mask:255.0.0.0

UP LOOPBACK RUNNING MTU:16436 Metric:1

RX packets:113 errors:0 dropped:0 overruns:0 frame:0

TX packets:113 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:0

RX bytes:8358 (8.1 Kb) TX bytes:8358 (8.1 Kb)

Network interface eth1 is the only active network interface, so it will be used. If there are more

than one active network interfaces, choose one.

1 2 ... 97 98 99 100 101 102 103 104 105 106 107 ... 125 126

Comments to this Manuals

No comments

Red Hat NETSCAPE ENTREPRISE SERVER 6.1 - 08-2002 ADMINISTRATOR Technical Information Page 102

Comments to this Manuals

Related products and manuals for Software manuals Red Hat NETSCAPE ENTREPRISE SERVER 6.1 - 08-2002 ADMINISTRATOR