Security Basics mailing list archives
Re: IP address allocation
From: "Hendra Santosa" <hendra () srd co id>
Date: Fri, 1 Aug 2003 21:22:06 +0700
I agree with some people there to say that a person don't have to put DNS records of all IP he/she has. The IPs has already been signed but don't have to be resolved. Some might have an interest to protect the information of an IP he/she has. I saw a network which route the IP inside their internal network a bit dynamicly. And for a special purpose, it's open only for a certain time. cyhss ----- Original Message ----- From: "Terry" <tech () futurecourse com> To: <security-basics () securityfocus com> Sent: Thursday, July 31, 2003 4:41 PM Subject: IP address allocation
Hi, I've googled but haven't really come across anything that answers my questions. Is it common practice for ISPs to allocate a block of addresses to a customer and put in DNS records for ones that are unused? For example, xxx.8-xxx.15 is assigned to the customer. Customer uses xxx.9 for the router and xxx.10 for web server. xxx.11-14 are unused. I would expect to see DNS records for xxx.9 and xxx.10 but not for the rest of the block. Am I wrong? If there are DNS records for the rest of the IPs, why is that? Is there some security reason for doing this? -- Regards, Terry --------------------------------------------------------------------------
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Current thread:
- Re: IP address allocation Hendra Santosa (Aug 01)
- <Possible follow-ups>
- Re: IP address allocation stephen at unix dot za dot net (Aug 01)