Basics

Network trouble shooting

1.Curl –I www.linux.org dipply http stayi of you website

2.netstat –an will tell the TCP ports that your server is listening .

3.netstat –nr will diplsy routing table also can use route –n

4. server connectiveit can be issues when iptabe is on or off /etc/init.d/iptables status

5.trace route tell you the hot it takes to the partaicuar IP address … traceroute –I xxx.199.113.27. Sam as tracert in dos.

6. tcpdum

DNS trouble shooting

1.Nslookup www.linxitsolutions.org (willgive you the reverslook up of domain name )

2. whois www.linux.org ( willgive you detiaon on the owner of the domain)

3.last -100 ( will thell you how has log in last on your server )

4.who ( willtell you who is currently loged in )