Why can't I ping

[mal]

We have two cctv units with remote view at Coo......and ........ toys I did set these units up to have port forwarding and they were working I was able to ping both routers and view the cameras

now I can't ping either Coo...... 202.76.163.--- or ....... toys 202.76.163.--- have disconnected our equipment at ........ toys and reset the router but still can't ping
The only reason I could think of that the router was programmed to not allow us to ping but if that was the case we would never been able to ping?

[machine]

Looks like it's open time at camberwell toys, we'll hit them for the chrissy pressies tonight.

Thanks for the tip mal

[mal]

Looks like it's open time at....... toys, we'll hit them for the chrissy pressies tonight.

Thanks for the tip mal

oops could you edit your post please

[LeroyPatrol]

yes everyones's port scanning now lol

Leroy

[jacksmith709]

Using 10/100 fast ethernet NIC's and a 10/100 switch with 3 computers in my home network.Have uninstalled and reinstalled all protocols:IPX/SPX,NETBEUI,TCP/IP.Assigned address's to TCP/IP(192.168.0.xx Subnet mask 255.255.255.0).can internal loop ping using both 127.0.0.1 and the assigned addresses.can share files and printers with all computers.CAN'T PING THE OTER COMPUTERS.I want to be able to share a dial-up internet connection and to do this TCP/IP must be able to ping the other computers.Ihave removed and installed the NIC's into other slots and reinstalled the drivers,can still share files and printers but no pinging of the other computers.Have I left out some important detail?
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[cwispy]

Mal are you on the same provider as the routers? Maybe the provider is filtering icmp traffic?

[mal]

Mal are you on the same provider as the routers? Maybe the provider is filtering icmp traffic?

Cwispy thought about that but why would it work then not, did ring their isp DAYTEC but he didn't seem to know very much at all just asked if the internet was going which it is and wouldn't help any more without charging the customer!!!!!!!

[mal]

Sorry cwispy no am not on the same provider

[cwispy]

A quick scan would appear to confirm that the provider is not filtering icmp as im able to ping some hosts in that netblock. So it sounds like either a config issue on the routers or maybe the router has some attack detection which has triggered. I have seen that happen before.

[mal]

A quick scan would appear to confirm that the provider is not filtering icmp as im able to ping some hosts in that netblock. So it sounds like either a config issue on the routers or maybe the router has some attack detection which has triggered. I have seen that happen before.

pm sent and thanks