My Turn for a Question
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Is there a command that I can use to make my ISP's DNS server spit out the hostname of a computer on his network when all I know about it is the IP address? The usual data from ARIN, ICANN, etc is useless, as all it will tell me is that the address block is assigned to the ISP. Tracert would do it most of the time, but by the time I see the logs the clown that is scanning me has logged off, and tracert returns nothing but a timeout. I know that Win2K Server ships with a lot of tools, but I'm not familiar with one that will do this for me. Suggestions? Barring this, can I set up my DNS server to steal a copy of the ISP's cache? That should contain the info I need, though it will be tedious to sort through it manually. "Please don't put cigarette butts in the urinal. It makes them soggy and hard to light" - Sign in a Bullhead City, AZ Restroom
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Is there a command that I can use to make my ISP's DNS server spit out the hostname of a computer on his network when all I know about it is the IP address? The usual data from ARIN, ICANN, etc is useless, as all it will tell me is that the address block is assigned to the ISP. Tracert would do it most of the time, but by the time I see the logs the clown that is scanning me has logged off, and tracert returns nothing but a timeout. I know that Win2K Server ships with a lot of tools, but I'm not familiar with one that will do this for me. Suggestions? Barring this, can I set up my DNS server to steal a copy of the ISP's cache? That should contain the info I need, though it will be tedious to sort through it manually. "Please don't put cigarette butts in the urinal. It makes them soggy and hard to light" - Sign in a Bullhead City, AZ Restroom
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Is there a command that I can use to make my ISP's DNS server spit out the hostname of a computer on his network when all I know about it is the IP address? The usual data from ARIN, ICANN, etc is useless, as all it will tell me is that the address block is assigned to the ISP. Tracert would do it most of the time, but by the time I see the logs the clown that is scanning me has logged off, and tracert returns nothing but a timeout. I know that Win2K Server ships with a lot of tools, but I'm not familiar with one that will do this for me. Suggestions? Barring this, can I set up my DNS server to steal a copy of the ISP's cache? That should contain the info I need, though it will be tedious to sort through it manually. "Please don't put cigarette butts in the urinal. It makes them soggy and hard to light" - Sign in a Bullhead City, AZ Restroom
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Nslookup is great for getting an address from a nameserver, but it's useless for getting a name from an address. Ping -a [IPaddr] will return a host name only if the host is active, and it is enabled to respond to ping. I want to identify the bugger whether he's on or not! There is a new chapter to this event. My ISP reports that a hacker was in the area trying to find all the unused IP addresses in this subnet. The owner of the address that was scanning me is known to the ISP, and has not been using scanning software, so the hacker may have gotten hold of this IP while the legitimate user was offline. The problem hasn't come up again since.:-D "Please don't put cigarette butts in the urinal. It makes them soggy and hard to light" - Sign in a Bullhead City, AZ Restroom
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Is there a command that I can use to make my ISP's DNS server spit out the hostname of a computer on his network when all I know about it is the IP address? The usual data from ARIN, ICANN, etc is useless, as all it will tell me is that the address block is assigned to the ISP. Tracert would do it most of the time, but by the time I see the logs the clown that is scanning me has logged off, and tracert returns nothing but a timeout. I know that Win2K Server ships with a lot of tools, but I'm not familiar with one that will do this for me. Suggestions? Barring this, can I set up my DNS server to steal a copy of the ISP's cache? That should contain the info I need, though it will be tedious to sort through it manually. "Please don't put cigarette butts in the urinal. It makes them soggy and hard to light" - Sign in a Bullhead City, AZ Restroom
nslookup will get a name from an IP address if the DNS server has an entry. Unfortunately most Adress to hostname translations are useless for ip addresses assigned to customers. As far as getting the information contained in the ISP's DNS server, it all depends on how their DNS server is configured. If the ISP allows DNS zone transfers to "unauthorized" servers then you could run a DNS server of your own and configure it as a backup DNS server for thier domain. This would download the primary database into your server where you could then examine it. Not much point in doing this though. If nslookup does not provide the info your pretty much out of luck. That means they don't have an entry for it. Most DNS servers these days also are configured to allow zone transfers only for sites that are on an "authorized" list.
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nslookup will get a name from an IP address if the DNS server has an entry. Unfortunately most Adress to hostname translations are useless for ip addresses assigned to customers. As far as getting the information contained in the ISP's DNS server, it all depends on how their DNS server is configured. If the ISP allows DNS zone transfers to "unauthorized" servers then you could run a DNS server of your own and configure it as a backup DNS server for thier domain. This would download the primary database into your server where you could then examine it. Not much point in doing this though. If nslookup does not provide the info your pretty much out of luck. That means they don't have an entry for it. Most DNS servers these days also are configured to allow zone transfers only for sites that are on an "authorized" list.
Bummer... The evil doer was back last night, this time hijacking my IP address. Since that wiped out my connection, I can at least take some consolation in knowing that he probably couldn't use it either. I got the mac address, though, and the ISP can block users from that info.:-D "Please don't put cigarette butts in the urinal. It makes them soggy and hard to light" - Sign in a Bullhead City, AZ Restroom