Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [ip]

IP - Internet Protocol, the most commonly-used set of rules for dispatching data across a large computer network.

IP (Internet Protocol) is a protocol which encapsulates data for transit across the Internet and encodes its source and destination addresses, among other parameters. It implements the network layer (layer 3) of the OSI model.

Questions related to IP (addressing, routing, and protocol issues) fall under this tag; questions merely containing an IP address do not.

2827 questions
1
vote
0 answers

keepalived - service not available on the 'passive' host

I've got ip failover configured on two hosts for a mysql (percona) cluster with keepalived; the failover works as expected, but I cannot access the service from the host that is passive or in 'backup' state. I'll try to explain better. Both HOST1…
Vito Botta
  • 327
  • 1
  • 7
  • 14
1
vote
1 answer

MAC to IP binding in ASA 5510 / SG 300-52

I am trying to configure a Cisco ASA 5510 to assign specific IP-addresses to specific MACs. Firmware on my ASA is 8.2(5). I have used this feature in our previous device (Cisco SA-520W). I have also read that this feature is (not yet) implemented.…
Sampsa
  • 113
  • 4
1
vote
1 answer

virtualhost *:443 vs virtualhost ip:443 for apache ssl

i had a virtual host config for ssl in apache as follows: DocumentRoot "/home/user/Documents/Development/oshackers-developers/website/" ServerName oshackers.org this config never worked. Apache show up the default page of…
demosthenes
  • 111
  • 1
  • 3
1
vote
1 answer

confronting other orgs using public ip's internally

A company that we deal with has their internal network numbered with 120.1.254.0/24, specifically a mail server. That IP range belongs in China, causing all of their mail to be flagged as suspicious by our SPAM filter. I found this rant about using…
longneck
  • 23,082
  • 4
  • 52
  • 86
1
vote
1 answer

How to change IP address on Ubuntu KVM

I have one physical server running kvm with 4 vms on it. For each vm i used an own IP address. Now my colocation provider is changing all IPs. What is the update strategy? Log in on each vm and re-configure /etc/network/interface ? Then change the…
Alebon
  • 113
  • 3
1
vote
3 answers

How can I refresh cached IP for a website in CentOS

When I ping a given website from a CentOS 6.2 server console, it pings to that website's old IP address. How can I force CentOS to refresh the cached IP for the website? I searched and found I could use: nscd -i hosts But I get command not found…
Vero
  • 111
  • 1
  • 6
1
vote
2 answers

IP Camera working on lan but not on internet

My IP cam model is Genius 350TR, I tested the cam at home on lan and internet and it worked. Then I shifted it to an office. It works on the office lan setup but I cannot connect to the ip cam from home. The IP cam is configured for port…
Kevin Boyd
  • 191
  • 2
  • 10
1
vote
1 answer

How to use Route53, or any other service, to redirect to a "backup" site when the main one is unreachable

I have example.com managed by a DNS server that associates it to some IP address (ip1), owned by a first web server where the full site is hosted. I also have a secondary webserver (with ip2) that hosts a "backup" site, with only the public pages…
devguy
  • 141
  • 1
1
vote
0 answers

Steps to analyze web server performance for only one Ip

We have a 2008 server, hosting 40 domains. All of our projects are developed in asp.net and using iis 7.5 in our server. Nearly 35 of these domains are sharing one IP and the other 5 is sharing another Ip. Everything was fine till 4 days ago. Then…
Kamil Ovacık
  • 49
  • 1
  • 2
1
vote
2 answers

What is the difference between flow control and congestion control at layer 2 and 3?

Is there a difference between flow control and congestion control at the following layers? layer 2(data link layer) layer 3(network layer) If they are not same, then how is each handled at the following layers? layer 2(data link layer) layer…
gsinha
  • 323
  • 1
  • 4
  • 15
1
vote
1 answer

What is the effect of stale ARP cache entry on traffic to that DIP till the entry ages out of the ARP table?

If the host, for which an ARP table entry is present on the connected router, has changed its NIC(so that its MAC address has changed), what will happen when a packet is sent out on the link with the old MAC address by the router? Will any kind of…
gsinha
  • 323
  • 1
  • 4
  • 15
1
vote
0 answers

Server 2003 R2 - II6- granting access to website via IP with subnet range

We are trying to allow for a client to connect to our website. By default we are Denying all access except for those with the specified IPs we have configured to run, everything before has just been a single IP address. However now we must implement…
John
  • 111
  • 2
1
vote
1 answer

Which is the best approach to assign IP to amazon ec2 instances?

I'am using Amazon SDK for PHP to create instances but I need to assign IP for each instance. In the case I create around 30 instances per week, which would be the best approach to assign IPs to them? I see Elastic IP is the built-in solution for…
Orlando
  • 171
  • 1
  • 1
  • 3
1
vote
2 answers

Haproxy and CNAME

I want to create a simple load balancer for the two servers. The problem is with CNAME records, I think. Let's say I have two the same applications on AppFog.com. app1.aws.af.cm and app2.aws.af.cm Here is my haproxy.cfg file: global maxconn…
user123354
  • 11
  • 1
  • 2
1
vote
2 answers

Multiple ip to single interface

i'm using openstack, but i think this is a more general problem. Actually i've a dedicated which comes with 1 ip address, i bought another one, and added using openstack's nova-manage cli. So now this is what i get $ ip addr 2: eth0:…
alex88
  • 148
  • 9
1 2 3
…
99 100