My server can't ping anything

**kosajaffe** · May 6th, 2012

It's possible that they block ICMP echo req by default but I really don't know that. I did ask them (via email), so let's see what they'll reply. Is there anything else I could do?

**darkod** · May 6th, 2012

Not much until they reply. Everything seems configured correctly. Maybe they are blocking ping to try to make attacks more difficult.

**kosajaffe** · May 6th, 2012

Ok. Thank you for your help so far.

**kosajaffe** · May 7th, 2012

I got a response from my hosting company regarding the ping issue. They say they are not blocking ICMP/Ping by default. So a ping should work. But it isn't. What can do now?

**darkod** · May 7th, 2012

Did you check in /var/log/ufw.log whether ufw is blocking some icmp traffic?

That is the best way to know if ufw is blocking it. If it's not, you need to look into other possibilities, like network, etc.

I have read again your iptables list and the before.rules and can't see anything wrong.

**kosajaffe** · May 7th, 2012

There are some [UFW BLOCK] lines in the log but nothing that would be indicating a problem with outgoing pings...

A ping to localhost is just working fine.

I did also traceroute somedomain.com. It dies on the router on my provider. Does this mean they do block pings? Is their firewall too strict?

Code:

traceroute to bbc.co.uk (212.58.241.131), 30 hops max, 60 byte packets
 1  cc.dd.ny.adsl (XXX.XX.XX.97)  3.313 ms  3.948 ms  4.614 ms
 2  * * *
 3  * * *
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
...
30  * * *

**darkod** · May 7th, 2012

It sounds like it. But they replied the opposite, under the assumption that person knew what he/she was talking about.

I suggest you follow up that support ticket/question and send them the above tracert result. Let them know you have tried lots of things to investigate this and it seems the only explanation is that they do block pings since your firewall is not blocking them (nothing in the log) and you have internet access, it's not like you don't.