Depends on the Firewall I allow ICMP from inside to outside but not from outside to inside If you can find out the type we may be able to help
Joshua Morgan PH: (864) 250-1350 Ext 133 Fax: (413) 581-4936 [EMAIL PROTECTED] -----Original Message----- From: Callow, David (KBPB) [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 12:44 PM To: NT 2000 Discussions Subject: RE: why can't I ping or telnet from behind a proxy? Local Machine Trace Route good...now what??? Scott >From what I can see from your messages your problem is that you are behind a firewall. Best practice when setting up a firewall is to disable ICMP, ICMP is the protocol that ping and tracrt runs over, if this has been done you will get no response. I hope this helps David Callow (MCSE) Snr Systems Engineer Delphis Consulting -----Original Message----- From: Scott.Wiseman [mailto:[EMAIL PROTECTED]] Sent: 20 February 2002 01:53 To: NT 2000 Discussions Subject: RE: why can't I ping or telnet from behind a proxy? Local Machine Trace Route good...now what??? I can telnet to the outside just not ping what is the udp or tcp port number and is there a link I can follow in the future I think it is the winsock proxy service that is messing me up... any one any one...hello any one out there??? -----Original Message----- From: Scott.Wiseman [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 5:44 PM To: NT 2000 Discussions Subject: RE: why can't I ping or telnet from behind a proxy? Local Machine Trace Route good...now what??? Microsoft(R) Windows NT(TM) (C) Copyright 1985-1996 Microsoft Corp. C:\>tracert rochs3 Tracing route to rochs3 [192.168.1.3] over a maximum of 30 hops: 1 <10 ms <10 ms <10 ms ROCHS3 [192.168.1.3] Trace complete. C:\> -----Original Message----- From: Dean Cunningham [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 5:18 PM To: NT 2000 Discussions Subject: RE: why can't I ping or telnet from behind a proxy? even better.. .tracert google... Yes you need to put in the gateway. The gateway is there to handle any calls off the subnet do a tracert to a machine local to the subnet ie off the same hub/switch and give us those results. this will confirm if your machine tcp stack is screwed or not. cheers Dean -----Original Message----- From: Scott.Wiseman [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 10:17 AM To: NT 2000 Discussions Subject: RE: why can't I ping or telnet from behind a proxy? even better.. .tracert google... C:\>tracert google.com Tracing route to google.com [216.239.37.100] over a maximum of 30 hops: 1 * * * Request timed out. 2 * * * Request timed out. 3 * * * Request timed out. 4 * * * Request timed out. 5 * * * Request timed out. 6 * * * Request timed out. 7 * * * Request timed out. 8 * * * Request timed out. 9 * * * Request timed out. 10 * * * Request timed out. 11 * * * Request timed out. 12 * * * Request timed out. 13 * * * Request timed out. 14 * * * Request timed out. 15 * * * Request timed out. 16 * * * Request timed out. what the H#$## does this mean...I put in the proxy... -----Original Message----- From: Scott.Wiseman [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 10:08 AM To: NT 2000 Discussions Subject: RE: why can't I ping or telnet from behind a proxy? Not far at all.... I must need to put in the gateway? Microsoft(R) Windows NT(TM) (C) Copyright 1985-1996 Microsoft Corp. C:\>tracert google.com Tracing route to google.com [216.239.37.100] over a maximum of 30 hops: 1 Destination host unreachable. Trace complete. C:\> -----Original Message----- From: Adam Smith [mailto:[EMAIL PROTECTED]] Sent: Monday, February 18, 2002 6:38 PM To: NT 2000 Discussions Subject: RE: why can't I ping or telnet from behind a proxy? > Subject: why can't I ping or telnet from behind a proxy? confused and > sort of dazed Pings are not proxied. Proxying is a way of caching information so that it can be re-retrieved more quickly (and cheaply). What you mean instead of a "proxy" is a firewall. A firewall is in place to protect a local network from inbound packets, by restricting the type of data that comes through, and through which methods it is allowed to come through. The firewall can also be configured to stop certain types of packets from going out from the local network to the internet, for example pings and traceroutes. For example, at my work, the firewall (which is a router) is configured to allow packets to be transferred outward only by a single server on the network. It is also configured to block a large amount of data that's coming into our network. The server that's allowed out is doubling as a proxy server, so it is caching HTTP and FTP requests so that if the same file is requested twice from the Internet, it's looked up locally instead. In my case, pings go out via this server, through our firewall/router, and out to the net. It would seem that in your case, your firewall is blocking ping requests. Try doing a traceroute and seeing how far you get -- that way you'll know at which point your pings are being blocked. 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