Very nasty ping problem

[Fallout]

Hello,I am starting this thread beause of a nasty ping problem I have under Windows XP Home Edition.Well basically any ip that I ping except my gateway ( cable ISP ) returns the "Request timed out" error.
Now I know that ping is actually working because I can connect to some servers that need to have a ping response to work...however other aplications that require to ping a servers don't work because of that error.
This problem is probably due to a virus but I can't format/reinstall windows at this time,so I am open to suggestions...such as windows settings that ping requires to run properly that might have been changed etc.

 

[capybara]

is icmp disabled?

 

[Fallout]

From where?it was disabled in my network adapter's settings I enabled all the ICMP options from there but it didn't help...please someone tell me if there's something I should check about ping...like registry entries or something in windows services...format/reinstall is not an option right now

 

[onelin]

do you have a router? It's likely the case that if so it's filtering all ICMP. I'm behind a router and the only PCs I can ping are local. It's probably just as simple as that, be glad you can't reformat since it probably wouldn't help Actually, I'm beginning to suspect that my ISP may even be doing the filtering...since even when dmz host I can't ping.

 

[bsobel]

Originally posted by: Fallout
Hello,I am starting this thread beause of a nasty ping problem I have under Windows XP Home Edition.Well basically any ip that I ping except my gateway ( cable ISP ) returns the "Request timed out" error.
Now I know that ping is actually working because I can connect to some servers that need to have a ping response to work...however other aplications that require to ping a servers don't work because of that error.
This problem is probably due to a virus but I can't format/reinstall windows at this time,so I am open to suggestions...such as windows settings that ping requires to run properly that might have been changed etc.

Your ISP is probably filtering ICMP, that is becoming more and more common now.
Bill

 

[Fallout]

I can pretty much disregard my ISP in all of this...first of all I don't see why they wouldn't allow me to ping ANYTHING but their gateway...since many programs can't work if they can't ping a server...and also this problem happened suddenly in the middle of the night...highly unlikely anyone was working in the ISP except the bodyguards maybe
Any other suggestions?

 

[bsobel]

Originally posted by: Fallout
I can pretty much disregard my ISP in all of this...first of all I don't see why they wouldn't allow me to ping ANYTHING but their gateway...since many programs can't work if they can't ping a server...and also this problem happened suddenly in the middle of the night...highly unlikely anyone was working in the ISP except the bodyguards maybe Any other suggestions?

A number of attacks and DoS zombies use ICMP. My fixed wireless provider filters all ping traffic (I can't ping out on that feed, I have use my DSL). As for the middle of the night, when else would you expect them to do router upgrades? It's hard to think this is a local issue since you can ping up to the gateway. But, to rule that out, do you have another system you can try?

Bill

 

[onelin]

I've yet to encounter a program that 'breaks' because it can't use ICMP. Battlefield 1942 and every game I know still manages just fine.

 

[Fallout]

Well I live in Romania and I can say my ISP isn't very serious...many times when they went offline because of a number of problems during the night they wouldn't fix it till morning....so I'm pretty sure they don't work during the night I know they don't work on sundays lol it's pretty lame but what can you do...guess I'll just have to get my hands on another pc to find out if it's an internal problem or not...could be internal too because I had the welchia worm once and what it did was ICMP flooding so bad that it gave me 80% loss or something like that...well thx for the ideas anyway I'll talk to my isp tomorrow see if they did anything

 

[Fallout]

Well turns out the ISP does filter ICMP for everyone now...because of a worm called welchia that floods the network/gateway with icmp ... and they were having too much traffic etc. however they told me on the phone that they couldn't allow icmp for me alone...is that true or they just don't want to ? hmm..
To onelin : try scanning an ip range with icmp disabled...it can't happen at least with the scanners that I tried... also proxy checkers need to ping the respective servers etc.