IP address is a numerical label assigned to each device participating in a computer network that uses IP for communication.

learn more… | top users | synonyms (1)

0
votes
0answers
27 views

postfix server flooded with junk email to other users

I have just noticed my postfix (maillog) is being flooded with external emails to be sent to both local and external email servers.. As far as i am aware, i have turned off relaying for other ...
2
votes
1answer
70 views

Pinging Hostname results in reply from 2 different IP addresses

I have an odd behaviour on my Windows 2008 R2 server, when I ping a hostname of another system, my first reply has a different IP address then the following replies. For example, if I was to ping ...
-1
votes
0answers
4 views

Do I(my gateway) have a public ip? [migrated]

when I search for "my public ip", google returns 103.12.15.1 (changed). My router's WAN side IP is 10.5.184.23 and its gateway is 10.5.184.12, not a public ip. When I traceroute to 8.8.8.8 from my ...
3
votes
0answers
29 views

How to view the IP of the connecting client in Domino 9 IMAP server?

I am running an IBM Domino 9.0.1 (64-bit) server on a Windows Server 2008 R2. The problem is that the IMAP server task is not displaying the IP address of the connecting client in the console and ...
0
votes
1answer
36 views

Change one IP without disrupting connections to second?

I have a CentOS 6 box that has two IP Addresses on one physical interface - One the IP assigned to the interface via the netconfig scripts, and the second a "virtual" IP assigned to the same ...
6
votes
3answers
454 views

ntpd gets “connect: invalid argument” on 0.0.0.2

It appears the reply for pool.ntp.org changed recently. This is making my CentosOS 6 ntp servers unhappy. $ host pool.ntp.org pool.ntp.org has address 0.0.0.2 pool.ntp.org has address 83.209.8.142 ...
5
votes
3answers
96 views

How does a router on the Internet know where to send a packet to next to get it towards its destination IP address? [closed]

I've been doing small-time freelance IT work (among other things) for about the last decade now. I've set-up or rebuilt more local network arrangements than I can care to count, and more recently I've ...
0
votes
0answers
24 views

Proxy for automated browsing on mobile networks

I am interested in building a website scanner which needs to act as if it is a user agent on a mobile network (e.g. Verizon LTE connection in the US, Movistar LTE connection in Spain, etc.) Aside ...
-1
votes
1answer
26 views

What is the global attribute of a network interface?

I saw the following line of code in a code repo I work on: ip addr | grep 'inet .*global' | cut -f 6 -d ' ' | cut -f1 -d '/' | head -n 1 I want to understand what does the "global" attribute mean ...
1
vote
1answer
26 views

Use ip address for name server and have it dedicated to a single site

Ok so I think I have this setup right but I just want to be sure. I have 3 IP address: 1.1.1.1 also known as ns1 2.2.2.2 also known as ns2 3.3.3.3 also known as ns3 They are being used as ...
0
votes
1answer
93 views

DHCP in router with AD, DNS and DHCP in one Server

My Lan is working fine 5 switches connected to core switch and have a router, DHCP configured in the router, network 10.10.10.1, 10.10.11.254 -- Mask 255.255.254.0 -- d.g 10.10.10.1 (Router IP).DNS ...
0
votes
1answer
66 views

What will happen in a network if multiple devices have the same MAC address? [closed]

What will happen in something like a wifi connection where different laptops are set with the same MAC address . To make it more interesting what will happen if there are multiple devices with same ...
-5
votes
2answers
70 views

Difference between connecting from inside and outside a subnet [closed]

Let's say provider granted me IP addresses 10.20.30.1 - 10.20.30.254, so the subnet address is 10.20.30.0 and mask 255.255.255.0. I set my router to 10.20.30.1 and computers to 10.20.30.2 and higher. ...
0
votes
1answer
37 views

Prevent AWS load balancer serving on IP address

I've configured a Amazon Webservices Load Balancer for my site. It's all good the domain name resolves to the IP address of the Load Balancer Endpoint, and on the internal LAN it communicates with my ...
1
vote
2answers
121 views

How do I connect to my libvirt/qemu/guests ? (with no ip address)

I have inherited the administration of a trusty ubuntu server with several virtual servers, also ubuntu using libvirt and qemu. I have the problem I cannot connect to these virtual servers/guests. ...
-1
votes
1answer
32 views

Webmin - Disallow access by IP [closed]

I have installed a Webmin instance. I can access by both domain:port and ip:port. Is there any way to restrict access to an specific domain name and disallow direct access by IP?
1
vote
2answers
67 views

Why are 093/8 IP adresses in both US and Europe?

According to this page of the IANA website, the IP addresses 093/8 are allocated to RIPE NCC (European network). However, when I use websites to locate IP (like this one), they tell me that ...
16
votes
2answers
2k views

In the output of `last`, what does suffix “.d” after an IP address mean?

In order to find out who was logged in recently on my server I am using the command: There were logins from very strange IP addresses e.g.: username@pc:/home/user$ last username pts/16 ...
0
votes
1answer
35 views

request ip from dhcp

I'm automating a deployment on a vmware esxi host using some custom shell scripts and I would need to know in advance the IP this VM is going to get from a DHCP prior to it being installed. I know ...
1
vote
1answer
84 views

Windows Dual NIC - Will this setup cause an ip address conflict?

My company has three subnets total of which two subnets have the same set of ip addresses... 192.168.0.x. This has not been an issue before but we are going to establish a VPN connection between ...
1
vote
1answer
91 views

How to get the internet facing IP address of a Windows VPN client?

We have a number of users VPNing into a Windows 2012 server. Using VPN provided by Routing and Remote access on Windows server. Mostly this works fine, but I have one or two users who sometimes ...
0
votes
0answers
21 views

Need Help Connecting Two VOIP Devices?

I have two Motorola XPR 8400 two way radio repeaters. These repeaters are capable of voice over ip. These two repeaters will be placed at two different sites with different ip addresses. I need to ...
0
votes
1answer
69 views

adding extra ip address with different port number

I am connected to a NAS system that it is set to static IP address 192.168.2.41 and the ports 80 and 443 of its static ip are reserved for the NAS configuration webpage. So if I insert ...
1
vote
2answers
965 views

Should an Azure VM have an Internal IP address of 100.x.x.x not 172.x.x.x or 10.x.x.x?

I have a Windows Azure host that has an internal IP address of 100.x.x.x. I would assume that this is conflicting with external hosts with the same net mask. Is there any assurance that I will not ...
2
votes
1answer
260 views

How to get local ip address associated with default gateway

There may be several network interfaces on a server, e.g., lo, eth0, eth1 From the route table, I know that eth0 is connected to the default gateway. The address of the default gateway, for example, ...
2
votes
2answers
81 views

How to point multiple top domains to IP of another top domain?

Lets say I have top domain domain-X.com with DNS A record pointing it to IP 1.2.3.4 then I have domains, which I might not have control over, they belong to customers, which owns them and may ...
-1
votes
1answer
29 views

connect to amazon server that allows only one ip address [closed]

I have an amazon server (AWS) with a security group that blocks all the ip addresses except mine. The problem is that I use my computer through different wifi hotspots so my ip address often changes. ...
0
votes
0answers
187 views

How can EC2 internal (10.X.X.X) IP addresses be mapped externally?

On our work internal network we've got a link to an Amazon domain. One of the servers we're talking to is: 10.29.112.X. Now this address starts with 10, so I expect it is an internally mapped ...
0
votes
2answers
279 views

How To Assign Permenant Public IP to a VM in Azure, So Even If it Shuts Down and Boots Back Up It Does Not Lose Its IP?

I have read the Azure documentation which explains how to allocate a reserved IP, etc. Exactly what command do I need to run from Azure command prompt to do this to an existing VM?
-1
votes
2answers
127 views

AWS create an alias for my EC2 instance IP

I'm not expert in anything related with networks. I've reasearched through Internet but I'm not able to get with the solution for what I need. It's simple. I've bought a domain in GoDaddy.com and ...
0
votes
0answers
217 views

why is ip address sometimes missing from Security audit log Source Network address for log on audit failures?

Most of the time when someone who is not authorized attempts to log on to my Windows 2008 R2 web server, an ip address is displayed. With the ip address, i can easily block the external host from ...
-2
votes
0answers
69 views

Many lines with 3 asterisks in traceroute [closed]

I'm trying to troubleshoot a recent network problem of mine, whereas occasionally I cannot connect to some websites or it takes forever. I tried doing a traceroute today in order to learn more about ...
1
vote
4answers
141 views

is it safe to change the RDP port?

My web server is in the U.S. and it is accessed from my home in Canada using Remote Desktop Connection, standard port. Unauthorized persons have tried to log in from many different countries, some ...
-2
votes
1answer
210 views

Configuring DNS server on Windows Server 2012 R2

I have successfully setup a DNS server on my local virtual machine and its running and I've mapped 2 public IP's with my domain name (****.com). I also created reverse lookup zones which basically map ...
0
votes
1answer
97 views

Disable logging ip adress to access.log in lighttpd

I have my webserver configured with lighttpd/1.4.31. About 80% of all entries in lighttpd's /var/log/lighttpd/access.log consist of my own ip address. I would like to disable my ip address logging ...
0
votes
1answer
54 views

Does Google bill for the IP addresses that are bound to stopped VMs?

Any idea whether Google bills for IP that are attached to stopped VMs, and is it the same rate as for an unused IP? (which actually makes sense).
1
vote
0answers
57 views

Linux: Same static IP configured for all NICs

I am shipping some servers out to remote colo sites. I want to configure them so at the other end any port can be lit-up and the boxes will be good to go. I had originally been planning on bonding ...
0
votes
2answers
159 views

How to tell if someone is trying to use my IP Address?

I use a relatively low-cost host for my personal server, and occasionally I get a rash of downtime alerts. These are all from today. If my host were to ("accidentally") assign my IP to someone ...
1
vote
0answers
15 views

Custom IPv6 stateless autoconfiguration suffix [duplicate]

When a router announces an IPv6 prefix via Router Advertisements, a host can use SLAAC to automatically derive the remaining bits from its MAC and use the combination as its globally routable IPv6 ...
0
votes
1answer
83 views

Unable to resolve IP Blacklisting with Spamhaus

I have a website which is currently assigned an IP 64.XXX etc from my hosting provider. This IP when looked up comes up clean with all Blacklist checks that I run. However, I am also being assigned an ...
0
votes
1answer
149 views

Why are there many domain names resolving to IP like 8.8.8.8 and many other? [closed]

I have been wondering why are there many domain names assigning public address that already owned by other (apart from shared hosting/ip), for example hundreds or thousands domain names assigned (or ...
1
vote
0answers
52 views

Ban IP doesn't work with forwarding [closed]

I use à VPS like a bridge for an other server. I use apf-firewall and this file /etc/apf-firewall/preroute.rules for forward somme port one the other server. This is the end of the file: iptables ...
0
votes
1answer
337 views

How to eliminate Security Warning message on EC2 Instance wizard

I've set up the AWS Free Tier, and configured a Windows Server. I took the defaults pretty much. There was 1 security group it created with 3 security rules it provided by default, and I didn't ...
0
votes
1answer
150 views

SSL connection to server ip address

I have a server which equipment at remote locations on private networks connect to via the internet using SSL. An SSL Certificate for the domain name of the server is installed. I have a number of ...
3
votes
2answers
676 views

Weird Requests Being Sent to My Server [duplicate]

I have written a server in C# for windows and it works fine. A week back I setup a dynamic domain name with No-Ip.com and now my server serves pages at the address nabeel.ddns.net. I was viewing my ...
2
votes
1answer
267 views

Select source IP on windows server 2012 with multiple IPs on 1 NIC

I have searched a lot for a solution to this case but I couldn't find any. So, any help would be appreciated. I have a windows server 2012 with 1 NIC having 2 IPs bound to it 37.188.120.8 and ...
0
votes
1answer
91 views

calculate reserved ip address based on mac address

Is it possible to calculate ip address based on mac address for isc-dhcp server? For example: 'aa:aa:aa:aa:aa:x' => '10.10.10.x' I have following in dhcpd.conf: subnet 10.10.10.0 netmask ...
0
votes
2answers
113 views

Http Requests: how to identify a machine using multiple IP addresses

I have an http server. Is it possible to identify a machine, which is making http requests to my http server using different IP addresses? In other words, is it possible to identify a machine, by ...
0
votes
1answer
334 views

how to change the ftp passive mode ip address for haproxy work as reserve proxy?

I have an ftp server in LAN, address is 192.168.1.11 I used haproxy is because lots of other service need it I put haproxy on my 192.168.1.1 the same machine of our soft-route(ubuntu 14.04) My ...
2
votes
1answer
1k views

DNS errors after changing nameservers for Cloudflare

I don't know if this is the right place for my question, but I have a problem with my DNS/nameservers after changing the nameservers. I'm not sure if it is a problem at my side or at my webhost. I ...