I am getting error that read as No Route to Host. I am trying to ping my ISP gateway as well as DNS server but I am getting this error. How do I solve this problem?
This problem indicate networking conflicts or some sort of networking configuration problem.
Here are things to check:
Can you ping to your local router interface (such as 192.168.1.254)?
Make sure your card (eth0) is properly configured with correct IP address and router address. Use ifconfig command to configure IP address and route command to setup correct router address. If you prefer to use GUI tools:
- redhat-config-network - Works on Red Hat and Fedora Linux/Cent OS.
- network-admin - Debian and Other Linux distribution use this GUI too
Use above two GUI tools to setup correct IP address, DNS address and router address.
b) Make sure firewall is not blocking your access
iptables is default firewall on Linux. Run following command to see what iptables rules are setup:
# /sbin/iptables -L -n
You can temporary clear all iptables rules so that you can troubleshoot problem. If you are using Red Hat or Fedora Linux type command:
# /etc/init.d/iptables save
# /etc/init.d/iptables stop
If you are using other Linux distribution type following commands:
# iptables -F
# iptables -X
# iptables -t nat -F
# iptables -t nat -X
# iptables -t mangle -F
# iptables -t mangle -X
c) Finally make sure you are using a router and not a proxy server. Proxy servers are good for Internet browsing but not for other work such as ftp, sending ICMP request and so on.
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{ 16 comments… read them below or add one }
I’m using Redhat 7.3 and running sendmail for my email but the emails are not getting out the email server which is my linux 7.3 box and if I run the command # sendmail -v -q from the command prompt, it tries to send but with an error message saying “no route to host” ?
SOS
Make sure you have correct routing setup. Also check file /var/log/message for details.
Make sure you have correct DNS setup. Finally some ISP do block access to 3rd party SMTP server to avoid spam.
On a side note RH7.2 is outdated get latest version such as CentOS 4.x or Fedora Core.
hi
very useful , my problem solved against no route to host
with regards to your suggestion “Make sure you have correct routing setup. Also check file /var/log/message for details.” above, could you tell me how to look and setup routing.
Thanks
Kumar
In the error logs I see this.
bound to 192.168.0.165 — renewal in 294 seconds.
Do I have to make any changes in the DHCP server.
Thanks
thanks a lot guys, my problem solved also. linux rocks :-)
here it is, i have 2 Computer, 2 ip address A (10.32.11.1) and ip address B (10.32.11.6). i can ping 10.32.11.1 but not 10.32.11.6, i cannot ssh 10.32.11.6 directly but yes i can directly remote ssh to 10.32.11.1 please help mee, what hapen to my network ???
# 3Com Corporation 3c905C-TX/TX-M [Tornado]
DEVICE=eth0
BOOTPROTO=static
BROADCAST=10.32.11.255
HWADDR=00:01:03:41:63:4C
IPADDR=10.32.11.6
NETMASK=255.255.255.0
NETWORK=10.32.11.0
ONBOOT=yes
sir, i cannot run default page in local host. i am using windows 2003 server-OS. can you please help?
i helped a lot guys,it was mainly due to iptables ,i just flushed it using iptables -F and now no worry..
Monsieur,I just installed Tor ,when it’s started connecting,stopped and showed (no route to host)….Can u tell me how to work that out,please?thanks…
Thanks a lot. I just cleared the iptables and nfs started working.
thanks a ton……… :)
Dear Sir
getting problem with yahoomail acconut errer show certificate errer and
navigation
Accept the certificate or change the browser… Simple…:P
help please. i recently installed a new cisco router at one of our branches. i am able to ping the head office router and other hosts on the head office lan except the sco unix server. i added a route to the new site in the etc/hosts file but still i cannot telnet or ping the new remote site form the unix server. is there anything i need to do before i get fired
Way to go man………………..
It worked
I checked everything except the firewall settings….
With this help I was abe to solve the problem of ftp connection…..
such a small thing but it almost dumbed me
Thanks
Thank you so much, flushing the iptables worked, although of what it means and if it has long-term effects are a mystery to me… All I know is that I can use a SSH between my laptop and desktop, just the way I wanted! Thank you guys for the help, was looking for an entire day on how to find out how to do it. Fedora is pretty cool, but I think Ubuntu is much simpler