Install and configure iftop

How to install iftop on Unix/Linux server?
The command “iftop” is using for bandwidth (BW) monitoring on a server. It is simple to monitor a server BW with iftop command.

You can analyse the incoming and outgoing packets using iftop tool. This is very useful to analyse network outages or some kind of network level attacks. In this article, I am sharing the steps to install this tool on your Linux box.

How to install iftop on my server?
Ya… Its really simple to install iftop on your Unix/Linux server. The following steps will help you to install iftop.

ssh to your server---->

[root@server]# wget http://www.ex-parrot.com/pdw/iftop/download/iftop-0.17.tar.gz
[root@server]# tar -zxvf iftop-0.17.tar.gz
[root@server]# cd iftop-0.17
[root@server]# ./configure

For a fresh server you may get an error like this 🙁 don’t worry about that,

…
…
checking for gawk… gawk
checking whether make sets ${MAKE}… no
checking for gcc… no
checking for cc… no
checking for cc… no
checking for cl… no
configure: error: no acceptable C compiler found in $PATH
That means server needs gcc for compilation

安装gcc。

在线方法：

[root@server]# yum install gcc
Again run this

离线方法：
下载gcc，gcc-4.8.5-44.el7.x86_64.rpm
cpp-4.8.5-44.el7.x86_64.rpm
参考 inux离线安装gcc等依赖包

[root@CentOS-1 home]#rpm -ivh mpfr-3.1.1-4.el7.x86_64.rpm
[root@CentOS-1 home]#rpm -ivh libmpc-1.0.1-3.el7.x86_64.rpm
[root@CentOS-1 home]#rpm -ivh kernel-headers-3.10.0-862.el7.x86_64.rpm
[root@CentOS-1 home]#rpm -ivh glibc-headers-2.17-222.el7.x86_64.rpm
[root@CentOS-1 home]#rpm -ivh glibc-devel-2.17-222.el7.x86_64.rpm
[root@CentOS-1 home]#rpm -ivh cpp-4.8.5-28.el7.x86_64.rpm
[root@CentOS-1 home]#rpm -ivh gcc-4.8.5-28.el7.x86_64.rpm
或者
rpm  -ivh  *.rpm --nodeps --force

[root@server]# ./configure
…
…
checking how to call gethostbyaddr_r… 8 args, int return
checking gethostbyaddr_r usability… yes
checking where to find pcap.h… no idea
configure: error: can’t find pcap.h
You’re not going to get very far without libpcap.

安装libpcap。
在线方法：

[root@server]# yum -y install libpcap libpcap-devel

离线方法：
下载 libpcap-0.9.4-8.1.i386.rpm 和 libpcap-devel-0.9.4-8.1.i386.rpm
下载仓库
安装 rpm -ivh *.rpm --nodeps --force

[root@server]# ./configure
…
…
checking pcap.h presence… yes
checking for pcap.h… yes
checking for a curses library containing mvchgat… none found
configure: error: Curses! Foiled again!
(Can’t find a curses library supporting mvchgat.)
Consider installing ncurses.

[root@server]# yum -y install ncurses ncurses-devel

下载 libpcap-0.9.4-8.1.x86_64.rpm 和 libpcap-devel-0.9.4-8.1.x86_64.rpm
下载仓库
安装 rpm -ivh *.rpm --nodeps --force

[root@server]# ./configure
[root@server]# make
[root@server]# make install

安装iftop 完成
Install and configure iftop (network analyser) – Unix/Linux