firewall (iptables) - Linux Forums

03-04-2008	#1 (permalink)
opensuser Just Joined! Join Date: Mar 2008 Location: Planet Earth Posts: 1	firewall (iptables) Hi, could you tell me how to disable/enable access to a site and the steps to discover the ip of a site! Answer the quicker you can please! opensuser

03-04-2008

#2 (permalink)

Kieren

Linux Enthusiast

Join Date: Aug 2007

Location: England

Posts: 730

Quote:

Originally Posted by opensuser

Hi,
could you tell me how to disable/enable access to a site and the steps to discover the ip of a site!
Answer the quicker you can please!
opensuser

To discover the IP address for a website simply ping it. To get Google's IP address you can:

Code:

kieren:/home/kieren# ping www.google.com
PING www.l.google.com (74.125.19.103) 56(84) bytes of data.
64 bytes from cf-in-f103.google.com (74.125.19.103): icmp_seq=1 ttl=244 time=214 ms
64 bytes from cf-in-f103.google.com (74.125.19.103): icmp_seq=2 ttl=244 time=311 ms
64 bytes from cf-in-f103.google.com (74.125.19.103): icmp_seq=3 ttl=244 time=268 ms
64 bytes from cf-in-f103.google.com (74.125.19.103): icmp_seq=4 ttl=244 time=262 ms

--- www.l.google.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3003ms
rtt min/avg/max/mdev = 214.905/264.344/311.633/34.291 ms

This shows that Google's IP address is 74.125.19.103. However - large sites such as Google have many different IP address' to deal with many users accessing the site at the same time so it isn't very realistic to block a site by it's IP address.

__________________
Linux User #453176

03-06-2008	#3 (permalink)
praka123 Just Joined! Join Date: Jan 2006 Location: Kerala,India Posts: 32	nslookup google.com will help

03-07-2008	#4 (permalink)
Kieren Linux Enthusiast Join Date: Aug 2007 Location: England Posts: 730	This might not get ALL the Google IPs, but only the ones the most local DNS server knows about __________________ Linux User #453176

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