Hi All,
I have freshly installed ESXI 4. But when ever i reboot my server all the setting gets lost like IP setting move back to automatic instead of static, the license key gets lost.
Any ideas?
I have only previously played with ubuntu using virtual machines with VMware Fusion. So everything just sort of worked. I've never had to install any drivers. I'm considering putting it on some real hardware and using it as a media center. What should I be looking for as far as checking hardware compatibility? How does installing drivers work? Any quick and easy recommendations / guides?
littleblackbox is publishing "private keys" that are accessible on publicly available firmwares. Debian calls these "snake-oil" certs. Most of these routers are securing their HTTPS certs with these, and as I think about it, I've never seen one of these internal admin websites with certs that wasn't self signed.
Given a webserver on IP 192.168.1.1, how do you secure it to the point that Firefox doesn't offer warnings (and is still secured)?
littleblackbox is publishing "private keys" that are accessible on publicly available firmwares. Debian calls these "snake-oil" certs. Most of these routers are securing their HTTPS certs with these, and as I think about it, I've never seen one of these internal admin websites with certs that wasn't self signed.
Given a webserver on IP 192.168.1.1, how do you secure it to the point that Firefox doesn't offer warnings (and is still secured)?
What do you use for backups to ftp server?
I've tried the setup with Amanda and virtual tapes on the ftp server mounted with Curlftpfs and I'm not satisfied with it. I just don't feel confident about Amanda.
Also I cannot use anything that uses rsync on the ftp mounted filesystem because it only creates the directories and doesn't create files as it cannot execute "mkstemp".
I've been thinking about Bacula but I can't find any good HOWTO for it.
Is there a way to watch Linux boot as though it was a program compiled with GCC on a Linux environment using the -g switch so, say, I can step through the entire boot sequence from GRUB onwards, choosing to step through at C source level or assembly when necessary/desirable, by using GDB or a GDB-like tool?
I suspect it would require a virtual machine at least, to watch the boot on a host environment. Any elaboration on this topic of observing a boot would be appreciated!
I'm not a sys-admin, but sometimes I play one at work.
I've inherited a virtual server that had MySQL installed from source. I'm gathering as much information about the install as I can (original people who installed it are, of course, not a resource).
How can I find
The default/current location of the MySQL binary files (often stored in a directory named data?)
Any default or custom loaded cnf files?
Looking for solutions that are a bit more sophisticated than a find / -iname '*.cnf' :)
I'm trying to measure would it be better to have prefork or worker mpm apache module for the server I'm working on, which is Amazon X-Large
15 GB memory
8 EC2 Compute Units (4 virtual cores with 2 EC2 Compute Units each)
and that will run a Magento website with about 50 active users at once. Site serves a lot of images and about 45 requests per page. Images sometimes hang, so it seems worker would be a better option?
Thanks
I am running tomcat server on Fedora machine.
when I run tomcat using following command,
service tomcat start
it runs on localhost ,
but when i try to connect to the server using public ip address of the server as follows remotly
http://xxx.xxx.xxx.xxx:8080
it does not start
could someone help me with this issue
Thanks in advance for any help
I can browse all websites except codinghorror.com in any of my browsers (IE, Firefox & Chrome), but that site is not down.
Chrome gives this error msg:
Error 109
(net::ERR_ADDRESS_UNREACHABLE):
Unknown error
There's absolutely no problem with internet connectivity. I also enabled TCP/IP version-6 but the site just doesn't open. What could be the problem?
I am logging all incoming SNMP traps to file, for further processing, via:
snmptrapd -Lf /path/to/my/file.log
So this will log all traps coming in on port 162. Is there a way I can tell the differences between different sources, i.e vendors. I believe this would be the "OID" field but i'm unsure. Any thoughts would be welcomed, if not I will just have to use a lookup with IP addresses, but I'm sure I saw that there is a unique part to each vendor.
Cheers
I want to set up a server with a lot of users so that (in order of importance):
Users cannot obtain ip addresses of other users with who, or last
Users cannot wall
Users can write to each other
Users are able to selectively mesg n other users, as opposed to simply blocking everyone
Point 1 is easily solved by a 660 on wtmp and utmp, but I don't know how to achieve the other points
The server runs Gentoo Linux
I have used Visio to map out my network structure, and have used the export function to create an HTML page that is searchable by IP, hostname etc. This is a really nice tool and I use it often.
However, I would like for users who do not use Internet Explorer to be able to use the search features. What are some alternatives to Visio here? I want to draw a network diagram where objects are searchable.
Thanks!
I have server on my local network which is exposed to the internet. I have domain pointed on my IP and setup forwarding. The thing i would like to do is when i access example.com from lan to connection be routed directly on my server, not to the nearest DNS. Things I had in mind were to upgrade router with dd-wrt and setup routing rule, or to setup local DNS. Unfortunately, I'm not familiar with neither of those systems.
If I have a system with let's say two Quadcore CPUs and HyperThreading enabled, how do I know how the phsyical and virtual cores are sorted? For example if I force a process to run on "CPU 0" how to know which Core this really is? I remember a complex drawing about this, but didn't find anything useful.
I have seen in many developer talks, the presenter using a demo.local URL instead of the conventional localhost/demo for faster access.
I've read about editing host entries over here How can I create shorter URLs to sites on my computer? but my question is since the localhost IP is the same 127.0.0.1 for every folder inside my var/www or htdocs then how to make it accessible in the shorter format?
I thought the pictures associated with our profiles were automatically generated until they were manually changed. A lot of people have these cool identicons based on their IP address.
How can I get my own identicon? I am looking for an online generator. Gravator does not seem to have any options to generate identicons.
Edit: I will probably accept your answer if you just tell me how you made your identicon (and it did not involve downloading/installing stuff)
Apache 2.2
CentOS
Plesk 9.x
I am using Plesk to manage my domain names on my virtual host.and GoDaddy for DNS
I have created a new sub-domain blog.
I can see the httpd.include for example has a new virtualhost entry for blog.example.com
I can also see folders have been created for the subdomain blog vhost\example.com folder
But when I try to go to blog.example.com - I get an error - basically the host is not getting resolved
My site - example.com is working fine otherwise
Any idea what could I be missing ?
I did try restarting the apache web server as well
Is the common set up for Chrome that it will use a different DNS server, while Firefox and IE will use a different one?
My Chrome (including the one on the virtual PC) will sometimes "Resolving host" and wait there for 20, 30 seconds, while Firefox and IE won't. (so after 20, 30 seconds with a blank page, the page will finally not be able to load).
So is there something that Chrome is doing that make the difference?
Hi,
I have published my website into inetpub in windows 7. I can open the website on my computer using my IP adress and also i can open it on a different home computer. But, when i give the URL to my friends on a different network, they cannot open it. It says connection timed out.
I have used Visual studio to build my web service.
Plase help
Im running a web server on port80, but i want traffic coming from ip 212.333.111.222 on port 80 to be fowarded to port 9020 on the same server that my web server is rinning at that is my sshd port
I have created web site, added to IIS 7, in the binding set up host name as "mysite.com". (here "mysite.com" is my registered domain that points to my IP address)
So when I assigned port 8095 and open site as mysite.com:8095 it succesfully opens on my local pc and outsite my network pc, but if I set up port 80 there, http://mysite.com opens only on my pc, but not in outside pc. Firewall is disabled.
How to resolve that problem, please help!?
Our internal DNS queries go through Active Directory. We are hosting a site that is not in our domain, but internal users need to get the internal IP address for routing.
How do I configure Active Directory to return A records for a few arbitrary domain names, not just those in our own domain?
Let's start with a diagram :
We can see a "typical" IPv4 company network with :
An Internet acces through a proxy
An "Others companys" access through an dedicated proxy
A direct access to local resources
All computers have a proxy.pac file that indicates which proxy to use or whether to connect directly. Computers have access to just a local DNS (no name resolution for google.com for example.)
By the way ... The company does not respect the RFC1918 internally and uses public addresses! (historical reason). The use of internet proxy explicitly makes it possible to not to have problem.
What if we would migrate to IPv6?
Step 1 : IPv6 internet access
Internet access in IPv6 is easy. Indeed, just connect the proxy in Internet IPv4 and IPv6. There is nothing to do in internal network :
Step 2 : IPv6 AND IPv4 in internal network
And why not full IPv6 network directly? Because there is always the old servers that are not compatible IPv6 ..
Option 1 : Same architecture as in IPv4 with a proxy pac
This is probably the easiest solution. But is this the best?
I think the transition to IPv6 is an opportunity not to bother with this proxy pac!
Option 2 : New architecture with transparent proxy, whithout proxypac, recursive DNS
Oh yes!
In this new architecture, we have:
Explicit Internet Proxy becomes a Transparent Internet Proxy
Local DNS becomes a Normal Recursive DNS + authorative for local domains
No proxypac
Explicit Company Proxy becomes a Transparent Company Proxy
Routing
Internal Routers reditect IP of appx.ext.example.com to Company Proxy.
The default gateway is the Transparent Internet proxy.
Questions
What do you think of this architecture IPv6?
This architecture will reveal the IP addresses of our internal network but it is protected by firewalls. Is this a real big problem? Should we keep the explicit use of a proxy?
-How would you make for this migration scenario?
-And you, how do you do in your company?
Thanks! Feel free to edit my post to make it better.
I have a urgent problem to solve today, but I'm lost. Please help.
I've cloned a Virtual Machine hosted on VM Ware ESXi 4.1
The OS is now Ubuntu Server 12.04 LTS, but at the time of cloning it was 10.04 LTS.
I fixed the MAC address manually inside /etc/udev/rules.d/70-persistent-net.rules. It is a known problem on Ubuntu. I had to remove the old MAC address and set the new one as eth0.
Everything seems to work fine, except ARP.
My provider OVH sent me a warning to resolve it today (this is the second day) or they will block my IP!
The log contains many lines like this:
Tue Jun 5 01:04:29 2012 : arp who-has 178.32.136.212 tell 178.32.136.224
where .224 is the cloned server that is causing problems, and .212 is the cloned one.
arp -na returns:
? (178.33.230.254) at 00:07:b4:00:00:02 [ether] on eth0
? (178.32.136.212) at 00:50:56:09:8e:f1 [ether] on eth0
The first IP is the ESXi machine.
The second one should not be there.
I'm not an expert and I don't know what else to do to fix this problem.
Any help will be very appreciated.
Thanks.
EDIT:
ifcofig on .224:
eth0 Link encap:Ethernet HWaddr 00:50:56:01:32:c6
inet addr:178.32.136.224 Bcast:178.32.136.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fe01:32c6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:399924 errors:0 dropped:465 overruns:0 frame:0
TX packets:241884 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:58006071 (58.0 MB) TX bytes:663603166 (663.6 MB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:516216 errors:0 dropped:0 overruns:0 frame:0
TX packets:516216 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:236284275 (236.2 MB) TX bytes:236284275 (236.2 MB)
ifconfig on .212:
eth0 Link encap:Ethernet HWaddr 00:50:56:09:8e:f1
inet addr:178.32.136.212 Bcast:178.32.136.255 Mask:255.255.255.0
inet6 addr: fe80::250:56ff:fe09:8ef1/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:16014 errors:0 dropped:0 overruns:0 frame:0
TX packets:14511 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:15134444 (15.1 MB) TX bytes:2683025 (2.6 MB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:9944 errors:0 dropped:0 overruns:0 frame:0
TX packets:9944 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1139347 (1.1 MB) TX bytes:1139347 (1.1 MB)