퍼온곳 : http://www.sillycodes.com/2015/11/installing-ngrep-on-centos-67.html
How to install ngrep on CentOS :
ngrep is not added to default repository, We need to add epel repo
sudo yum install epel-release
Then update the cache using following command.
yum update
Now Install the ngrep.
yum install ngrep
Example Usage :
Using ngrep to capture the SIP traffic.
ngrep -Wbyline port 5060 -d any -q
Read more: http://www.sillycodes.com/2015/11/installing-ngrep-on-centos-67.html#ixzz4Q925ckM6
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