About Telnet:connect to address 190.168.6.6:no route to host error handling

Try telnet to a port on an IP to test if the port is on. Results:

650) this.width=650; "src="/e/u261/themes/default/images/spacer.gif "style=" Background:url ("/e/u261/lang/zh-cn/ Images/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>

The feedback is like saying that this address is not in the routing table.

This problem. There are two ways of handling

1. The host may turn on the firewall and do a block.

Check Iptables,

650) this.width=650; "src="/e/u261/themes/default/images/spacer.gif "style=" Background:url ("/e/u261/lang/zh-cn/ Images/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>

We execute iptables-f clear all firewall rules

650) this.width=650; "src="/e/u261/themes/default/images/spacer.gif "style=" Background:url ("/e/u261/lang/zh-cn/ Images/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>

And then shut down the firewall.

650) this.width=650; "src="/e/u261/themes/default/images/spacer.gif "style=" Background:url ("/e/u261/lang/zh-cn/ Images/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>

Try Telnet again

650) this.width=650; "src="/e/u261/themes/default/images/spacer.gif "style=" Background:url ("/e/u261/lang/zh-cn/ Images/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>

or an error.

So skip to processing 2

2. The address segment is not in the routing table. (processing method joins the routing table)

Check the routing table first, route-n

650) this.width=650; "src="/e/u261/themes/default/images/spacer.gif "style=" Background:url ("/e/u261/lang/zh-cn/ Images/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>

And then find out that no, then join

Linux joins the routing table command

Route add-net xxx.xxx.xxx.xxx netmask xxx.xxx.xxx.xxx Dev current nic

650) this.width=650; "src="/e/u261/themes/default/images/spacer.gif "style=" Background:url ("/e/u261/lang/zh-cn/ Images/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>

And then test the telnet.

650) this.width=650; "src="/e/u261/themes/default/images/spacer.gif "style=" Background:url ("/e/u261/lang/zh-cn/ Images/localimage.png ") no-repeat center;border:1px solid #ddd;" alt= "Spacer.gif"/>

Still can't explain, is the network equipment level problem.

Ps:

To delete a route (from the routing table)

Route Del-net xxx.xxx.xxx.xxx netmask xxx.xxx.xxx.xxx Dev current Nic

Set the default gateway

Route add default GW 190.168.9.1

This article is from "IT Operations technology sharing" blog, please be sure to keep this source http://emouer.blog.51cto.com/9906658/1612141

About Telnet:connect to address 190.168.6.6:no route to host error handling