Ping???

[aconakc]

Does anybody know why I would be able to use the internet and not be able to ping at all. I've been having e-mail trouble at my domain and during trouble-shooting with a technician discovered I counldn't ping anything. He was even confused as to how I cound surf the web but not be able to ping. Any suggestions???

Thanks,
Jeff Bassaline

 

[butchrecon]

You are talking at a company right? Do you use a fire wall like MS proxy? Is there a DNS server in house? Without a DNS server you will not be able to resolve wep addresses to Ip addreses. James Collins
Systems Support Engineer
A+, MCP

email: butchrecon@skyenet.net

Please let us (Tek-tips members) know if the solutions we provide are helpful to you. Not only do they help you but they may help others.

 

[jogairan]

have you tried just using the ip address to ping and see if it works? That would mean you have a DNS Server issue.

 

[Chadda]

If you're running Win95 click start\run, tyoe in ws2bakup
keep pressing 'A' on your keyboard to the abort error you will recieve in DOS. WHen completed restart in DOS mode, and type it in the command prompt c:\windows\ws2bakup\ws2bakup.exe
will run without any errors here. This does a big cleanup of your TCP/IP stack, seeing as Win95 needs help with it.

If you're running win98 this function will not work. Try 'Ping localhost', that works go to winipcfg, get your own IP ping it. Then trying pinging your gateway, If that works then sounds like butchrecon may be in the gold!

 

[aconakc]

Ok...here we go

To jogairan - I tried pinging the IP address for my site with the same results...Timed out!!!

To Chadda - I'm running Win98SE. Pinged 'localhost' and my own IP address successfully. Pinging my gateway failed.

To butchrecon - I'm on my home computer connecting to the internet through cable modem to charter@home ISP. That is setup for a web proxy server of

http://proxy:8080.

I don't know anything about this stuff.

 

[theripper]

aconakc -

It's possible (not likely) but possible that your ISP has blocked your PING options from leaving their network. If you can ping yourself (ping 127.0.0.1) a straight loop-back test - you know your TCP/IP stack is installed and working.

Some ISPs are starting to do this to discourage newbie hackerz from using cheesy programs that can attempt to tear down IP connections, steal bandwidth (ie Ping Of Death, ICMPeeOnU, etc...) On the reverse side of things, it can help if someone tries to use these programs against your IP address (your internet connection) too! Kinda like a generic firewall, listening on given ports for specific calls.

You may want to give your ISP a quick call, or check out their web site re: blocking/disabled PING (or port 8080 calls). May save you some trouble shooting.

 

[ChrisAC]

theripper is spot on!!

Many ISP's (including ourselves) put firewalls and ACL's in place to prevent ICMP traffic. Sometimes this is a temporary measure. For example, recently we became the target for a DDOS attack. The only way to prevent it was to put ACL's in place and have our other carriers that provide our links out to the internet put ACL's in place to prevent ICMP traffic to our subnets.

So, ping is not always the best way test connectivity. If you need to connect to a box on port 80 and port 80 is getting through .. don't worry about it!!

Chris.

 

[paulwood]

Being able to surf the web doesn't mean you should be able to ping since they use different protocols. HTTP (the internet stuff) uses TCP to get where it needs to go, PING uses ICMP. Doesn't matter what the acronyms stand for, what it means is that your ISP can enable web stuff and disable the PING, TRACERT and PATHPING utilities. These are not strictly needed for your purposes, but for techs it is a real pain.

For information, Port's 8080 and 80 are the http ports in TCP/IP and the proxy settings just tell your computer to send the internet stuff to your ISP's server where it is cached on disk for theoretically quicker access. Trouble is if their server isn't configured properly, or isn't working properly, it can slow and even stop things. Your ISP should have a status page on their website to let you know about current 'issues'.

Hope at least some of this is clear