Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 1445
  • Last Modified:

cant ping but can resolve host names

Hi all

The network is a windows XP pro network with a 2k advanced server. Here is the thing, i can resolve host names eg \\host name but i canot ping any IP addresses. Each computer on the network has its own IP address assigned by the modem\router. Does anyone have any ideas? The network is running as a workgroup, please dont ask why as i didnt initially set it up! :-)

This is really starting to get to me as it is making diagnosing problems very difficult!! Any help or ideas would be much apreciated!

Regards

Gavin McMillan
0
gavinandrewmcmillan
Asked:
gavinandrewmcmillan
  • 3
  • 2
  • 2
  • +5
2 Solutions
 
Netman66Commented:
Hi gavinandrewmcmillan,

You'll need to setup a Reverse Lookup zone for your subnet on the server - if you do not have DNS setup, you'll need it.  Also, ensure the clients are set to register in DNS - you'll find this on the DNS tab of the Advanced properties on the NIC.

Advise.

Cheers!
Netman
0
 
ZabagaRCommented:
Make sure you don't have Windows XP firewall turned on, else pinging won't work.
i.e. XP Service Pack 2 will stop pings unless you go to the properties and change the setting.

IF XP SP2 ------->To enable it, open Windows Firewall. Select Advanced and click Settings on ICMP. Check the Allow incoming echo request

0
 
ZabagaRCommented:
Let me know if you are saying:

1) you just can't ping

OR

2) can't perform any network function [aside from ping] using a machine's IP address.


If your problem is (2) from above then it's a DNS problem.  In which case you'd have to provide me more information about your servers DNS config and your clients IP config.
0
Who's Defending Your Organization from Threats?

Protecting against advanced threats requires an IT dream team – a well-oiled machine of people and solutions working together to defend your organization. Download our resource kit today to learn more about the tools you need to build you IT Dream Team!

 
shrocksCommented:
is this a business network? im asking this cause im wondering what kind of routers your using.

if your running cisco routers (2600,2500, etc...) whoever initailly configured the router(s). my have set up some sort of ACL( Access Control List) that doesnt allow outgoing pings( ICMP)
0
 
gavinandrewmcmillanAuthor Commented:
Hello

Ill give you some more information. This is a business network. We have a speedtouch ADSL modem/router. This handles the DHCP and DNS. I unable to ping any ip address eg ping 192.168.0.1 etc it just times out. however i can type //host and it will open up the shared folders on the particular host. I will go and check all the DNS settings etc in the modem/router now. and fill you all in on more details.

Off topic, i have just started studying for my ccna, can anyone recomend any books or resources i can check out? at the moment i have a sybex book.

Regards
Gavin McMillan
0
 
Ron MalmsteadInformation Services ManagerCommented:
your router may be discarding the pings....
0
 
ZabagaRCommented:
Gavin - you didn't say if you were using Windows XP SP2 or not.

And when you say, "I unable to ping any ip address eg ping 192.168.0.1 etc it just times out. however i can type //host and it will open up the shared folders on the particular host." - - - - you're not comparing apples to apples.

Pinging and doing //host are two different operations. It's perfectly possible to deny ICMP but allow all else. The ADSL modem/router may not allow pings.

What would help would be if you did:

1. Ping www.xxx.yyy.zzz    (where w.x.y.z = ip address of a host)
2. Ping <hostname_here>

AND from the Start -> Run ->

1. \\www.xxx.yyy.zzz
2. \\<hostname_here>

and telling us the results.  

0
 
CajunBillCommented:
Gavin, I second the information request from ZabagaR.

Also, please clarify: are you ding the commands from one of the XP systems or from the Win 2K server?
Please do all of the commands from the same XP system.
If you could do them from the Win 2K server also, and let us know both sets of results, that would be useful.

HTH
CajunBill
0
 
rindiCommented:
You can't ping, so as has already been suggested, this is a firewall problem. So check all the firewall on your system, if they are allowing ICMP requests. In the Windows XP SP2 Firewall you'd open control panel, then windows firewall, then the advanced tab. Now use the settings button in the ICMP section and enable "Allow incoming echo requests". Other firewalls will have similar settings, If you have to open or close ports by hand, it would either be port 7 or 8, and it should be done for the protocol icmp.
This has to be done on all those PCs you want to get an answer from when you are pinging them.

Also, if not absolutely necessary for any very special application or old hardware that doesn't support ip, remove any networking protocol other than tcp/ip in your networking properties of all PCs.
0
 
PennGwynCommented:
What protocols are your running?  Browsing of shares (which you say is working) uses NetBIOS which could in turn be transported over TCP/IP, IPX, or NetBEUI.  Ping is very much a TCP/IP specific function.  (Yes, I know you have to jump through extra hoops to get NetBEUI or IPX onto an XP box, but some people do it....)

It's a long shot, but perhaps TCP/IP is misconfigured or broken and share browsing is happening over some other protocol.

0
 
gavinandrewmcmillanAuthor Commented:
Hello

Sorry for being so vague with my answers however i have now solved the problem, thanks ZabagaR and rindi

just to clarify what was hapening

typeing ping www.xxx.yyy.zzz in the comand prompt did not work
typeing ping <host_name> in the comand prompt did not work
typeing \\www.xxx.yyy.zzz in run did not work
typeing \\<host_name> in run did not work

All computers on the network are XP SP2 (except server) but all have the firewall disabled as we are using Trend Micro PC Cillin on all of the workstations, it has a built in firewall. I have checked the settings and found that all ICMP requests were blocked. I have changed this and now have comunication between all hosts and server.

Thanks all for your help and suggestions!!

Regards
Gavin McMillan
0
 
rindiCommented:
thanx, too.
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

  • 3
  • 2
  • 2
  • +5
Tackle projects and never again get stuck behind a technical roadblock.
Join Now