An Internet Protocol address (IP address) is a numerical label assigned to each device (e.g., computer, printer) participating in a computer network that uses the Internet Protocol for communication. An IP address serves two principal functions: host or network interface identification and location ...
-3
votes
2answers
82 views
Why does ip address have a dash [closed]
Why does my ip address have a dash at the end of it? It was assigned to me by AT&T Uverse.
106.206.186.224-8
2
votes
6answers
108 views
How reliable are IP address-based firewall restrictions?
On some of my production systems that need to be accessible outside of the LAN I will sometimes add a firewall restriction at the edge to only permit traffic on, say, RDP from a specific origin IP ...
0
votes
1answer
32 views
Windows 2003 drops static IP address
Our web server in the past day has dropped two static IP addresses. When they are dropped, they are still listed in the IP Properties, but if you perform a "cmd" -> "route PRINT" they are not. ...
7
votes
2answers
105 views
How even is the distribution of digits in the last part of an IPv4 address?
I have a redirect script operating on a website I created. It sends 1/3 of visitors to site A, 1/3 of visitors to site B and 1/3 to site C.
It works by dividing the last part of the users IPv4 ...
1
vote
1answer
35 views
Is it possible to distinguish traffic from different computers from behind a router?
The mac address would be that of the router, I presume. But could I distinguish the ip addresses of the computers behind the router, or could I only see a global ip address that belongs to the router?
...
0
votes
1answer
75 views
Multiple DNS A record for one machine
I saw this post but it doesn't really address my situation. I am trying to add a second Address record for the same IP address but for some reason I am constantly getting a 404 bounce from ...
0
votes
1answer
52 views
Subnetting advice [closed]
I am trying some simple subnetting via Cisco Pacjet Tracer, this was all working fine below but now its causing problems, can someone just verify that this scheme below is fine.
Router 1
S2/0 ...
1
vote
2answers
46 views
Cloning IP address and/or MAC address for server fail-over
I am currently providing some web applications to my customers (apache/php/mysql on Windows server). I'm looking to provide some sort of fail-over server in the case my server has a hardware failure. ...
1
vote
2answers
27 views
How to have oracle database accessible remotely
I can connect to my oracle database using localhost:1521. However, connecting to the IP address does not work.
I'm trying to do this because I am trying to connect to my database using another ...
3
votes
1answer
83 views
How to obtain incoming ip address from virtualbox
I setup a http server (apache) under VB and forward the port from the host using the available tool in VB. My VB network is NAT connected with the host.
However when doing this the access log of http ...
0
votes
0answers
32 views
Cloud services, Public IPs and SIP [closed]
I'm trying to run a custom SIP software (which uses JAIN SIP 1.2) on a cloud box. What I'd really like is to have a real public IP aka which is listed by "ifconfig -a" command. This is because atm I ...
0
votes
1answer
69 views
Lvs Load balancer VIP
I have created an alias IP address of my computer using
sudo ifconfig eth0:0 172.17.10.173 netmask 255.255.240.0 broadcast 172.17.15.255
My orignal IP is 172.17.6.111 and netmask is 255.255.240.0.
...
1
vote
1answer
48 views
Adding Static IP's to the NIC
We are currently working on migrating a lot of new machines to our network, and my job this morning was to setup all of the IP Addresses. I worked on this all morning, and when I got back tonight I ...
2
votes
1answer
72 views
Howto maximize utilization of assigned subnet block for DMZ
I'm part time sysadmin for a small hosting company with currently 20 different public servers. We have a 27 subnet block that gives us a maximum of 30 usable IP addresses. That much I know, but how do ...
0
votes
1answer
53 views
Finding all network addresses associated with a given hostname
Scenario:
a server is multi-homed to a variety of networks (perhaps it is a jump box)
DNS has the hostname registered only on one network (the management interface, perhaps)
Problem:
without ...
1
vote
1answer
98 views
nginx not serving requests to external IP address
I have nginx running on port 81. I can telnet using telnet 127.0.0.1 81 and everything is fine.
But when I try to telnet to my machine from my Mac (an external IP address), I just get this error:
...
1
vote
1answer
56 views
Intranet web site; sometimes using computer name works, othertimes the IP works..exclusively and alternating
I have created a web application hosted in IIS 7.
When I deploy my web app to customers it can be reached via the computer name most of the time, however sometimes it will suddenly stop working. The ...
2
votes
2answers
99 views
Rewrite URL Domain Name when IP address used
My apache home server listens for HTTP requests on an alternate port (port 8080), but I would like to let users type my domain name (example.com) without having to specify the port.
So far I've ...
1
vote
1answer
50 views
How do I access a server from a specific IP?
I have a two systems on a private network 192.168.0.0/16.
SysA has an IP of 192.168.0.30
SysB has two subinterfaces in linux, ETH0:0 with IPs of 192.168.200.213 and ETH0:1 192.168.90.20.
If I'm on ...
-1
votes
3answers
142 views
how find datacenter using a ip address related to that datacenter?
I have a vds and it's really good!
I have some problems with my reseller of that server because of their support.
I want to buy a server from that datacenter directly.
How can I find that datacenter ...
1
vote
1answer
85 views
How to change the network adapter bind order in Linux
The SNMP trap always uses the first IP address as displayed in the network adapter binding order on the computer. For example, assume that the computer has the following binding order:
LAN ...
0
votes
2answers
155 views
Restrict access to website in IIS to a range of IP addresses
I'm configuring a website in IIS6 to restrict access to a customer's IP address range.
I've been given their IP address (81.145.41.114) and an IP range (172.17) which I am meant to allow access to.
I ...
0
votes
1answer
96 views
ipv6 max_addresses in sysctl.conf (Debian 6)
I'd like to assign any number of IPv6 addresses to a Debian 6 host, but I see the following setting, and want to know what are the consquences of setting higher, or does this setting approach limits ...
0
votes
4answers
159 views
IP Address blocking best way to do this (in terms of security)?
I have had a user trying to hack into my server and muieblackcat pops up on my server, quite a few times.
I just wanted to get some advice as to the best way to protect against this ie should i ...
4
votes
3answers
155 views
IPv6: Can one use more than 64 bits for the network ID
Wikipedia states:
Unicast and anycast addresses are typically composed of two logical parts: a 64-bit network prefix used for routing, and a 64-bit interface identifier used to identify a host's ...
2
votes
1answer
85 views
Giving Virtual Machines in Xen their own IP Addresses
Installed Xen on a server at home, recently moved it to a data center. Worked fine with DHCP behind my router, with each virtual server and the dom0 getting its own IP address.
At the data center, ...
0
votes
1answer
141 views
proxying ip from nginx to jetty/gwt
Good morning!
I have nginx setup in front of jetty 6, which is running a GWT application. I am trying to forward the ip address, and all the answers I find on the internet tell me to do this:
...
2
votes
1answer
119 views
Managed switch port-based DHCP allocation - general case?
I saw a strange comment bagging IT departments (i.e. sysadmins) on Slashdot the other day:
half the time they cant even do a simple thing like provide a jack with a set IP address for us
Reading ...
0
votes
4answers
159 views
Resolving real IP address out of a dynamic dns address
I recently opened a dynamic dns user (at no-ip for that matter..) for my own personal needs and especially for ssh-ing my computer whenever I need to, without knowing it's static IP.
My questions ...
0
votes
2answers
47 views
Changing IP address of current server
I have VM with IP address 10.10.10.99 how do I change the IP address to something else for e.g. 10.10.10.100 ? I have pinged to 10.10.10.100 and there is no such server in the network. Is there any ...
0
votes
1answer
52 views
How many assignable addresses are needed for a router-to-router connection?
I have an address zone (let's say 150.41.0.0/16) and I want to subnet it optimally using VLSM. I have a number of VLANs, each with a minimum number of needed addresses, and a couple of ...
2
votes
3answers
382 views
How can I find my subnet mask?
The popular answer to the question " How does Subnetting Work? " does a nice job in explaining subnets.
I remember learning about the network classes back in CCNA class but that answer mentions ...
1
vote
2answers
138 views
Does each domain have to be tied to a unique IP address when using SSL certs?
I have a Zimbra ZCS 7.1.3 server it running the OSE version. The server hosts 4 domains for email. Each of the email domains has its own SSL cert that is self generated.
Something that has sort of ...
2
votes
1answer
248 views
Can a DHCP reservation use an IP address in the exclusion range?
Windows Server 2008 R2, running the DHCP service.
DHCP Scope: 192.168.1.1 - 192.168.1.254
Exclusions: 192.168.1.1 - 192.168.1.99
If a reservation uses an IP address in the exclusion range (like ...
-3
votes
1answer
58 views
Use old server IP address to New server [closed]
Now we are going to use new server to host our website. We are going to use our old server IP address to new server. Can we replace our new server IP address by old server IP address?
If possible, ...
0
votes
3answers
226 views
Are same IP address with different submask unique? [closed]
Possible Duplicate:
How does Subnetting Work?
In a same block of IPv4 addresses, can there be same IPs with different submasks?
For example, can I have this:
180.70.65.140/26
...
2
votes
1answer
386 views
How to redirect all Internet traffic to OpenVPN Server
I have seen working solutions around the issue of forcing Internet traffic to go through the OpenVPN server but they are all done in Linux, all I want to know is how to add an entry to the route table ...
1
vote
1answer
91 views
HTTPS for server IP address shows as invalid certificate
I have a website, say www.foo.com with an IP address 1.2.3.4 I have an SSL certificate for www.foo.com and when I visit https://www.foo.com all is good. However if I visit https://1.2.3.4 it says the ...
-2
votes
2answers
56 views
Synchronize information in same server with multiple ips [closed]
So i have a unix dedicated server and multiple ips. I am running a website on both ip address.
192.168.1.0
192.168.1.1
How do i make it so the files and folders on both ip addresses are ...
0
votes
2answers
62 views
Server reverts to DHCP from time to time
I have an Ubuntu 10.04 server with static IP address configuration:
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet static
...
0
votes
3answers
274 views
Finding the first and last address of a block of IP addresses with subnet mask
I am not sure if this is the right place to make this question but I thought this is one of the most appropriate SE's site to make a question on networking. Please move it to other more appropriate ...
3
votes
3answers
171 views
Subnetting Challenges
I am trying to plan out a network with the following requirements and am having problems trying to complete a subnet plan for my network.
The network consists of 3 routers that connect 3 different ...
42
votes
7answers
3k views
How to take full ownership of an IP address?
My business is... troublesome.
What I do is legal in every country on earth, but some people don't like it, and make it so tough on my poor ISPs that I am forced to go looking for new providers more ...
1
vote
0answers
76 views
psad, alarm for host scanning broadcast address
I've set up psad 2.1.5-3 in Ubuntu 10.10. I keep receiving emails like this
=-=-=-=-=-=-=-=-=-=-=-= Wed Oct 19 17:26:57 2011 =-=-=-=-=-=-=-=-=-=-=-=
Danger level: [4] (out of 5)
Scanned ...
2
votes
2answers
212 views
ISA 2006 does not allow traffic using FQDN
I experience an issue accessing Tomcat running over SSL with MS ISA 2006 in front.
When I access using the internal IP address (e.g. https://10.0.42.136/...) everything works fine and ...
1
vote
2answers
255 views
How to fetch new IP address under Ubuntu Server on VMware Workstation?
I have VMware Workstation 7 and Ubuntu Server 10.10 installed on it. When I copied my virtual hard drive to another PC it took same IP address.
Is it possible to somehow receive another IP address ...
0
votes
3answers
193 views
A Way To Determine IP Range From CIDR? [closed]
Possible Duplicate:
How does Subnetting Work?
Is there a formula or a calculator for determining an IP address from CIDR that I was given: 38.103.17.160/27?
I would like to know the ...
0
votes
2answers
126 views
How can I make the most effective use of limited static IP addresses for a mail server?
I am running a Zimbra ZCS 7.1.2 server. The server is setup to host multiple domains, 3 at the moment. But I have a problem and I think I am over thinking the solution.
The problem is I want every ...
1
vote
1answer
137 views
Setting up reverse DNS for a /25 block of IPs
I've currently got a block of IPs that go from xxx.xxx.xxx.128/25
Here's my current rDNS setup:
$TTL 12h
$ORIGIN 128/25.xxx.xxx.xxx.IN-ADDR.ARPA.
@ IN SOA ns1.domain.com. ...
1
vote
1answer
67 views
Setting up internal and external IP
I am quite new at setting websites up to contain SSL certificates and allow them through a firewall. I am currently at step one and have been told that I need to set up an internal IP address on my ...
