Solved

What is stopping ICMP echo replies?

Posted on 2009-04-09
15
1,025 Views
Last Modified: 2013-11-29
We have a BT (2Wire) 2700HGV Business Hub. We have 5 servers on our network which have been assigned static IP addresses. I currently get no response if I PING the servers from outside the office. Do you know what setting on the 2700HGV is blocking this? I have confirmed that the option "BLOCK PING" is not checked.
This is the entry in the router's log which we get for a blocked PING:
 
INF 2009-04-09T09:40:03+01:00 fw,fwmon src=217.194.218.53 dst=217.46.156.164 ipprot=1 icmp_type=8 icmp_code=0 Unknown inbound session stopped

Open in new window

0
Comment
Question by:jpguillebaud
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 8
  • 7
15 Comments
 
LVL 1

Expert Comment

by:Nocturnal25
ID: 24105462
The servers are connected to a hub and the hub is connect to a router/modem and that is connected to your ISP am I correct?
0
 

Author Comment

by:jpguillebaud
ID: 24105470
Nocturnal25 - that is correct.
0
 
LVL 1

Expert Comment

by:Nocturnal25
ID: 24105484
You will only be able to ping the WAN ip on the router/modem since your servers sit behind that device they will have internal ip's. You could open up port 1723 for a vpn connection on the router but one of the servers would have to be hosting the vpn service ro you could open port 3389 for RDP and RDP to one of your servers and work from that server.
0
Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

 

Author Comment

by:jpguillebaud
ID: 24105504
The IP addresses of the servers are in fact external IP addresses. We have been provided with 5 static external IP addresses by our BT Business Broadband account. The router is configured to allow certain protocols in: SMTP, HTTP etc which work, however I can't see how to configure inbound ICMP.

I have tried also pinging the IP address of the router which is also a public IP address but I get no response.
0
 
LVL 1

Expert Comment

by:Nocturnal25
ID: 24105521
I'm assuming these are windows boxes? Do they have firewall turned on?
0
 

Author Comment

by:jpguillebaud
ID: 24105600
It is unlikely to be a Windows Firewall issue because I can PING the servers from another computer on the same network.
0
 
LVL 1

Expert Comment

by:Nocturnal25
ID: 24105627
Can you configure your router to allow icmp packets through?
0
 

Author Comment

by:jpguillebaud
ID: 24105637
That is what I am hoping to do. Does anyone know if it is possible to configure this particular router model (BT 2wire 2700HGV) to allow ICMP inbound?
0
 
LVL 1

Expert Comment

by:Nocturnal25
ID: 24105697
If you open a browser and type home does naything popup.
0
 

Author Comment

by:jpguillebaud
ID: 24105775
Yes, I am able to open the router configuration pages and log on in order to make changes, however I don't know how to configure it to allow ICMP.
0
 
LVL 1

Expert Comment

by:Nocturnal25
ID: 24105880
If you go to advanced settings is block icmp checked?
0
 
LVL 1

Expert Comment

by:Nocturnal25
ID: 24105888
I mean ping.
0
 

Author Comment

by:jpguillebaud
ID: 24105893
No it isn't checked.
0
 
LVL 1

Expert Comment

by:Nocturnal25
ID: 24105928
What about under your firewall settings, maybe under other.
0
 

Accepted Solution

by:
jpguillebaud earned 0 total points
ID: 24106506
I am thinking that this make of router blocks ICMP requests by design for security reasons. Since it is a fairly basic router it doesn't allow much flexibility. I have looked through all the settings but can't find how to allow ICMP (IP protocol 1).

I have decided to close this question.
0

Featured Post

IoT Devices - Fast, Cheap or Secure…Pick Two

The IoT market is growing at a rapid pace and manufacturers are under pressure to quickly provide new products. Can you be sure that your devices do what they're supposed to do, while still being secure?

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I found an issue or “bug” in the SonicOS platform (the firmware controlling SonicWALL security appliances) that has to do with renaming Default Service Objects, which then causes a portion of the system to become uncontrollable and unstable. BACK…
The Cisco RV042 router is a popular small network interfacing device that is often used as an internet gateway. Network administrators need to get at the management interface to make settings, change passwords, etc. This access is generally done usi…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Suggested Courses

617 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question