split dns - Page 271 - Developer IT

iptables configuration under ubuntu

- by aioobe

I'm following a tutorial on setting up a dns-tunnel. I've run into the following instruction: Now you need to enable forwarding on this server. I use iptables to implement masquerading. There are many HOWTOs about this (a simple one, for example). On Debian, the configuration file for iptables is in /var/lib/iptables/active. The relevant bit is: *nat :PREROUTING ACCEPT [6:1596] :POSTROUTING ACCEPT [1:76] :OUTPUT ACCEPT [1:76] -A POSTROUTING -s 10.0.0.0/8 -j MASQUERADE COMMIT Restart iptables: /etc/init.d/iptables restart The problem is that I don't have any /var/lib/iptables/active. (I'm on ubuntu.) How can I accomplish this? I suspect that I should just interact with the iptables command somehow but I have no clue what to write. Best would probably be if I could put the commands in a script somehow I suppose. (A side-note. If I execute a few iptables-commands it wont be there for ever, right? The rules will be discarded on reboot?)

Read the article

Varnish with multiple sites/boxes

- by jerhinesmith

Is it possible for Varnish to redirect traffic to different IPs based on the url? For example, is the following setup feasible (and if so, what would the VCL look like): *.example.com points to Varnish IP address When a request is made to foo.example.com, varnish checks the cache and sends the request to Server1's IP address on a cache miss. When a request is made to bar.example.com, varnish checks the cache and sends the request to Server2's IP address on a cache miss. foo and bar are (for the most part) completely unrelated sites. They use the engine, but have different content and their own distinct database. Since there previously was no penalty for doing so (other than cost) we split them up into two separate boxes so that a ton of traffic to foo won't have a negative impact on visitors browsing around bar. I could set up two instances of varnish and have one serve up foo's static content and the other serve up bar's, but as there doesn't seem to be much overhead to running Varnish, I think (perhaps mistakenly) that it would make more sense to go with one Varnish server that redirects the traffic to the appropriate box on a cache miss.

Read the article

Setup windows 2012 AD in Hyper-V for a Test environment

- by hub

Im trying to setup a Windos 2012 R2 test environment on my work computer (a laptop). I have a AD, DHCP and DNS server on server A, and a client connecting to the doman and that works. The client can ping the AD server and gets a valid IP adress. If I ping google.com from the client I get the IP adress but I dont get any responses (request time out). If i ping google.com from server A it works as it should. Server A have a connection to the Internet through a "external network switch" in hyper-v, which gets its internet from a router and the client is connected to a "internal network switch". May the poblem be that server A is behind a router? Can I make this solution to work regadless the network my laptop is connected to? At home i have one IP adress, at work its a totally different range. What I would like is to use my laptops internet connection, regardless wifi or wired, to act as incomming internet, is this possible?

Read the article

What USB key would you recommend using for running a Windows 7 VM off of?

- by Darryl Hein

Because I can't find a good PHP editor for OSX, I develop in Windows with PhpEd. At the moment, my development time is split between a desktop and a laptop. To partially solve the problem of having 2 different environments, I have installed a virtual machine (through Virtual Box) and put the hard drive file on an external hard drive. At the moment, I've been connecting it through Firewire 800. I have 2 problems with this setup: (1) The hard drive is fairly large so to carry the laptop and hard drive I pretty much require a backpack. (2) The hard drive requires quite a bit of power and therefore reduces the battery life (by about 40%). My thought is to move the VM hard drive onto a USB key. I realize it will be slower, but as I'm just using it for PHP development, there isn't a lot of disk activity in the VM. The only really intense time is boot up, otherwise, it just about sits idle. Do anyone have any suggestions on a USB key to use for the VM? It would need to a minimum of 32GB.

Read the article

configuring lighttpd for large downloads

- by ahmedre

i run a web site that hosts pages that are just general scripts (php, etc) and mp3 downloads (some of which are fairly large - up to 200mb). i am running lighttpd on the servers on linux (ubuntu 64). everything is fine, but under high load, the server is not accessible (or very slow - even sshing in takes a while), and i am guessing this is due to a huge number of mp3 downloads at that time. consequently, dns sees the server as down and redirects all the traffic to the other servers, and after a while, it comes back up and things work again. so what's the best way to fix this? ideally, i want the server to continue running (and the web pages - php etc - to always work, but downloads don't always have to work). should i just have 2 web servers running (one for the downloads and one for the php pages), or is it perhaps something i can fix in my lighttpd configuration? here are the snippets from my configuration: server.max-worker = 4 server.max-fds = 2048 server.max-keep-alive-requests = 4 server.max-keep-alive-idle = 4 server.stat-cache-engine = "fam" fastcgi.server = ( ".php" => (( "bin-path" => "/usr/bin/php-cgi", "socket" => "/tmp/php.socket", "max-procs" => 1, "idle-timeout" => 20, "bin-environment" => ( "PHP_FCGI_CHILDREN" => "64", "PHP_FCGI_MAX_REQUESTS" => "1000" ), "bin-copy-environment" => ( "PATH", "SHELL", "USER" ), "broken-scriptfilename" => "enable" )) ) # normal php site $HTTP["host"] =~ "bar.com" { server.document-root = "/usr/local/www/sites/bar.com/" accesslog.filename = "|/usr/sbin/cronolog /var/log/lighttpd/%m/%d/%H/bar.log" } # download site $HTTP["host"] =~ "(download|stream).foo.com" { server.document-root = "/home/audio/" dir-listing.activate = "enable" dir-listing.hide-dotfiles = "enable" evasive.max-conns-per-ip = 1 evasive.silent = "enable" # connection.kbytes-per-second = 256 accesslog.filename = "|/usr/sbin/cronolog /var/log/lighttpd/%m/%d/%H/download.log" }

Read the article

Problems installing Windows service via Group Policy in a domain

- by CraneStyle

I'm reasonably new to Group Policy administration and I'm trying to deploy an MSI installer via Active Directory to install a service. In reality, I'm a software developer trying to test how my service will be installed in a domain environment. My test environment: Server 2003 Domain Controller About 10 machines (between XP SP3, and server 2008) all joined to my domain. No real other setup, or active directory configuration has been done apart from things like getting DNS right. I suspect that I may be missing a step in Group Policy that says I need to grant an explicit permission somewhere, but I have no idea where that might be or what it will say. What I've done: I followed the documentation from Microsoft in How to Deploy Software via Group Policy, so I believe all those steps are correct (I used the UNC path, verified NTFS permissions, I have verified the computers and users are members of groups that are assigned to receive the policy etc). If I deploy the software via the Computer Configuration, when I reboot the target machine I get the following: When the computer starts up it logs Event ID 108, and says "Failed to apply changes to software installation settings. Software changes could not be applied. A previous log entry with details should exist. The error was: An operations error occurred." There are no previous log entries to check, which is weird because if it ever actually tried to invoke the windows installer it should log any sort of failure of my application's installer. If I open a command prompt and manually run: msiexec /qb /i \\[host]\[share]\installer.msi It installs the service just fine. If I deploy the software via the User Configuration, when I log that user in the Event Log says that software changes were applied successfully, but my service isn't installed. However, when deployed via the User configuration even though it's not installed when I go to Control Panel - Add/Remove Programs and click on Add New Programs my service installer is being advertised and I can install/remove it from there. (this does not happen when it's assigned to computers) Hopefully that wall of text was enough information to get me going, thanks all for the help.

Read the article

What XMonad Configuration Best Replicates Default Ion3 Behavior and Feature Set?

- by mtp

Not being very familiar with Haskell and lamenting that Ion 3 is now abandonware, I am curious if anyone out there has found a way of replicating the default Ion 3 behavior and aesthetics in XMonad. If I can't have a near-exact replica of Ion 3-style behavior in XMonad, here is what would be critical to me: Virtual desktops that are empty by default and that spawn full-screen applications, which can be split horizontally or vertically evenly, leaving an empty adjacent pane. The panes, which house open windows, are manually resizable, preferably via keyboard. The panes exhibit tabbed behavior, meaning that they can house multiple windows. Windows can be tagged and moved between panes / virtual desktops via keyboard sequence. A given window may be temporarily exploded into full-screen mode via keyboard sequence. Each new virtual desktop starts in the same state—i.e., with one pane. Each virtual desktop may have its panes divided independently of other virtual desktops. From my investigation, it appears that there are several configurations that provide #3. For as much as I want to spend the time to familiarize myself with Haskell, I just simply don't have time. Any suggestions would be greatly appreciated. As far as I can tell, Ion has no conception of master pane or window, so this behavior is not desired.

Read the article

SQuirreL Client: Opening up a table in a separate tab

- by Dalin Seivewright

I've switched to SQuirrel Client to view an Oracle database with a variety of tables. At any given time, I need to look at the contents of several related tables at the same time. The problem is that, at least by default, SQuirrel Client does not open up multiple tables at a time. When you click on a different Table object, the main view is refreshed with newly selected table data. Oracle's SQLDeveloper (which I am trying to move away from) did this by default if I recall, but there was an option to "freeze" panes. Does a similar option exist in SQuirrel Client? I do not require the ability to view the contents of two different tables on the same screen (i.e. a split view) but I would like the ability to have tabs for each table so I can quickly switch between each table view rather then having to find the table in the table list over and over again. Note: I am using this in a professional capacity but if it does not "belong" here then I suppose it could be moved to superuser.

Read the article

What is the max supported number of SATA devices (using cable adapters) on a Dell SAS 6/iR adapter?

- by Zac B

I've got a Dell SAS 6/iR PCI-E adapter. I don't have a multiplier backplane. I'm planning on connecting SATA (non SAS) drives. If I buy cable adapters only (ones that split a SAS connector on the card to a certain number of SATA cables), how many drives can I connect to this card? The way I see it, there are two limitations: a limitation imposed by the theoretical max number of devices supported on the card (which I've dug through the specs to find, but haven't seen yet), and a limitation imposed by the number of SAS plugs on the card multiplied by the number of SATA cables that come out of the highest-multiplying splitter I can buy. The answer to my question would be the minimum of those two limitations. I've seen 4x SATA coming out of some splitters; are there any that have more? Alternatively, if this is an RTFM question, does anyone have a good link to a "this is how SAS works, this is how you figure out the max number of devices, and this is how the concepts of 'ports', 'lanes', 'endpoint devices', and 'connectors' all relate in SAS-land" document? I've looked around on the Dell docs, but haven't found anything that explains this to someone at my level of understanding of SAN/enterprise storage technologies. Cheers!

Read the article

Strange battery behavior on laptop

- by EpsilonVector

My laptop is behaving rather strangely lately, and I was hoping to get some idea as to what may be causing such symptoms. The problem: When charging, very minute or so it loses connectivity with the AC adapter for a split second, and regains it back immediately. When this happens the little light that indicates the computer is plugged in does flicker off and back on, but I checked the adapter by replacing the battery on my laptop, and this indeed solves the problem, so it is probably the battery which is at fault, not the adapter (I also tried to move the adapter's wire around just to make sure it had nothing to do with torn wires). I suppose that the obvious solution is to get a new battery, but as far as battery defects go- this is a rather strange one; it loses connection with the adapter, but still powers the computer, and changing the power setting to a balanced plan (was maximum performance) seem to have solved the problem too. Is there a chance this is not simply the battery, but some kind of other electronic defect? And if not, what can cause it to behave so strangely? PS I tried to recalibrate it- didn't help.

Read the article

Implementing an isolated guest WLAN via IPSec VPN on Windows

- by sysadmin1138

We are attempting to set up a guest WLAN network that is isolated from the rest of our network. This is proving difficult due to a couple of technical reasons. My first choice was to use a separate VLAN, on which our Firewall's handy WLAN port would handle DHCP, DNS and the network isolation we need. Unfortunately, due to the fact that our main office and our Internet connection itself are in different locations connected by way of a Metro Ethernet connection, I'm at the mercy of our ISP for VLAN transit. They won't pass a second VLAN between our two sites. And my hardware doesn't support 802.1ad "Q-in-Q", which would also solve this problem. So I can't use the VLAN method for isolation. At least not without spending money. As our Firewall can handle IPSec site-to-site VPN connections, I hope it is possible to connect a Server 2008R2 (standard) server I have in the office location to the WLAN and provide gateway services to the firewall. Thusly: Unfortunately, I don't know if it is possible to connect the two this way. The firewall has a pretty flexible IPSec/L2TP implementation (I've used it to connect iPads in the wild), but is neither Kerberized or supports NTLM. The Connection Security Rules view on the Windows server seems to get close to what I think needs to be done, but I'm failing on figuring out how to get it to do what I need it to do. Is this even possible, or do I need to pursue alternate solution?

Read the article

Outbound mail issue during Exchange 2003 migration

- by user27574

Dear all, I am having an outbound email issue during the Exch 03 migration. Basically, we are migrating Exch03 to new hardware, both servers are Server 03 based. Everything runs smooth while setting up and installing Exch 03 on the new box. Public folders are all replicated. My issues are shown below.... 1) After starting to move users' mailboxes to new Exch 03, they receive some undeliverable mail and bounced back mail from some vendors, then I move few users back to test around, they have no problem at all after moving back to old Exch 03. 2) Another issue is our company has Blackberry users, we don't have BES. Under each user's mailboxes, we have forward rule setup, so that both user inbox and BB can receive email. User who is moved to the new Exch 03 server, they can only send email to the BB user's inbox, mail cannot be forwarded to BB at all, smtp queue stacks up and keep trying until the time is expired. Since not all emails that the users send out from the new Exch have problem, I am not able to narrow down what is the issue here. Can anyone give me some ideas? Could this be MX record / Reversed DNS relate? Or firewall NAT rule setting? Thanks.

Read the article

What are the "least legally restrictive" well-connected countries to host a website?

- by monster

NB: I am aware that this question is subjective, as it can't be defined precisely, but the answers should still be "objective": Country name, and what makes it legally safer. EDIT: A) I am located in Germany. B) I am NOT looking for a place to offer pirated Software/Media; no binary on my site, except "profile icon". Hello! I want to start publishing "social" websites / apps, and I found that the biggest initial problem is this: Any and all services I have to depend on, including Domain Registrar, DNS provider, Server/Cloud Provider, CDN Provider, ... even my Insurance Agent, basically say that they can "throw me out" if my website contains "unacceptable" content. It's always phrased in such a way that basically anything can fall under "unacceptable" content. This is very frustrating because you just can't fully control what users post on your "social website", and you so you basically have to expect when you go to bed that your site is going to be gone when you wake up. I've heard a lot of horror stories about this. Since the "Terms Of Service" of all those providers are foremost to protect themselves from legal actions, and those legal actions depend on the country where they are located, it seems like the first step is to find which country is the "safest" to locate a site. "Safest" being defined as, where I am least likely to get in legal trouble with the local authorities, if some user posts something unacceptable in some way. The main restriction is that it should also be a "well-connected" country, because there is no point in being "safe", if my users can't get to my sites, or the latency is unacceptable. I am targeting the English speaking people in any country as my future users.

Read the article

IPv6 Addresses causing Exchange Relay whitelists to fail

- by makerofthings7

Several of our new Exchange servers are failing to relay messages because it is communicating over IPv6 and not matching any receive connector I previously set up. I'm not sure how we are using IP6 since we only have a IPv4 network and we are routing across subnets. I discovered this by typing helo in from the source to the server that is confused by my IP6 address. I saw the IPv6 message and the custom message I gave this receive connector. (connectors with more permission have a different helo) 220 HUB01 client helo asdf 250 HUB01.nfp.com Hello [fe80::cd8:6087:7b1e:99d4%11] More info about my environment: I have two dedicated Exchange forests each with a distinct purpose. They have no trust and only communicate by SMTP. They both share the same DNS infrastructure via stub zones. What are my options? This is my guess, but I'm no IPv6 expert so I don't know which one is the best option Disable IPv6 Add the IPv6 address to the whitelist (isn't that IP dynamic?) Tell Exchange to use IPv4 instead Figure out why we are using IPv6 instead of IP4

Read the article

Looking for suggestions for hosting Windows 2000 Server in the cloud / VPS / etc?

- by JohnyD

I have a Windows 2000 Server, currently virtualized in Hyper-V, that I would like to get running off-site as a backup (cloud, VPS, etc). You can't virtualize in EC2 and I'm fairly certain there are no Server 2000 AMI's floating about (correct me if I'm wrong!). If anyone has a recommendation on how I can get a virtualized Windows 2000 Server running in a secure, remote environment I would be grateful. As far as locations go I'd be interested in both North America as well as Australia and Europe. In a nutshell, we're ploughing our way out of a legacy codebase and this server is the last that remains of the legacy apps. However, it is still very much used by our clients. Everything is backed up each night (data, images, etc) to tape which is then taken offsite. However, in the event of a fire I would love to have a backup legacy server to point DNS records to. So while I am rebuilding from the ashes our services would already be available. It would save a lot of time and make my managers all the more happy (and that's what it's all about, riighhtt? :D) Thank you all for your suggestions. Please let me know if I've left out any important information. Additional info: - the legacy codebase does not function properly in Server 2003

Read the article

Mysql connections hanging in login state

- by Mark Rose

Read the article

Deploying a Django application in a virtual Ubuntu Server

- by mfsaint

I have a virtualbox machine running Ubuntu Server 10.04LTS. My intention is to this machine to work like a VPS, this way I can learn and prepare for when I get a VPS service. Apache+mod_wsgi for deploying the Django app seems the right choice to me. I have the domain (marianofalcon.com.ar) but nothing else, no DNS. The problem is that I'm pretty lost with all the deployment stuff. I know how to configure mod_wsgi(with the django.wsgi file) and apache(creating a VirtualHost). Something is missing and I don't know what it is. I think that I lack networking skills ant that's the big problem. Trying to host the app on a virtualbox adds some difficulty because I don't know well what IP to use. This is what I've got: file placed at: /etc/apache2/sites-available: NameVirtualHost *:80 <VirtualHost *:80> ServerAdmin [email protected] ServerName www.my-domain.com ServerAlias my-domain.com Alias /media /path/to/my/project/media DocumentRoot /path/to/my/project WSGIScriptAlias / /path/to/your/project/apache/django.wsgi ErrorLog /var/log/apache2/error.log LogLevel warn CustomLog /var/log/apache2/access.log combined </VirtualHost> django.wsgi file: import os, sys wsgi_dir = os.path.abspath(os.path.dirname(__file__)) project_dir = os.path.dirname(wsgi_dir) sys.path.append(project_dir) project_settings = os.path.join(project_dir,'settings') os.environ['DJANGO_SETTINGS_MODULE'] = 'myproject.settings' import django.core.handlers.wsgi application = django.core.handlers.wsgi.WSGIHandler()

Read the article

nginx redirect proxy

- by andrew

I have a web app running on a nginx server on local ip 192.168.0.30:80 I have this in my etc/hosts 127.0.0.1 w.myapp.in If someone accesses my app using a "w" subdomain, it shows a webdav interface, otherwise it runs normally (for example, someone calls http://myapp.in , it goes into the app, and http://w.myapp.in goes into webdav interface - this is done within the app, nginx has nothing to do with it) Because I don't have a dns or anything like that, users must access the app by ip. A problem appears if someone wants to access the webdav interface, because you cannot access the app by a subdomain - unless you write a line in your local hosts file, which is not a solution) A possible solution If it's possible to setup the nginx server so that if someone calls http://192.168.0.30 (on port 80), it goes normally into the app, but if a user tries to access say http://192.168.0.30:81 (another defined port) it redirects internally to w.myapp.in, and the app sees the subdomain Given the app, can this be done? If yes, what should I put in the nginx config file? And if you guys think of a better solution, I'm open to any.

Read the article

nginx: Rewrite PHP does not work

- by Ton Hoekstra

I've a Suffix Proxy installed and I'm using the following rewrite with wildcard subdomain DNS on: location / { if (!-e $request_filename) { rewrite ^(.*)$ /index.php last; break; } } My suffix proxy has the following URL format: (subdomain and/or domain + domain extension to proxy).proxy.org/(request-uri to proxy) I've this php code in my index.php: if(preg_match('#([\w\.-]+)\.example\.com(.+)#', $_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI'], $match)) { header('Location: http://example.com/browse.php?u=http://'.$match[1].$match[2]); die; } But when requested a page with a .php extension I'll get a 404 not found error: http://www.php.net.proxy.org/docs.php - HTTP/1.1 404 Not Found http://www.utexas.edu.proxy.org/learn/php/ex3.php - HTTP/1.1 404 Not Found But everything else is working (also index.php is working): http://php.net.proxy.org/index.php - HTTP/1.1 200 OK http://www.php-scripts.com.proxy.org/php_diary/example2.php3 - HTTP/1.1 200 OK http://www.utexas.edu.proxy.org/learn/php/ex3.phps - HTTP/1.1 200 OK http://www.w3schools.com.proxy.org/html/default.asp - HTTP/1.1 200 OK Somebody has an answer? I don't know why it's not working, on apache it's working fine. Thanks in advance. I've removed the location and now it's working perfectly: if (!-e $request_filename) { rewrite ^(.*)$ /index.php last; break; }

Read the article

What are problems and pitfalls with a public facing Active Directory

- by Ralph Shillington

The situation that i'm faced with is this: We plan on using a number of server applications hosted on Amazon EC2 machines, mainly Microsoft Team Foundation Server. These services rely heavily on Active Directory. Since our servers are in the Amazon cloud it should go without saying (but I will) that all our users are remote. It seems that we can't setup VPN on our EC2 instance -- so the users will have to join the domain, directly over the internet then they'll be able to authenticate and once authenticated, use that token for accessing resources such as TFS. on the DC instance, I can shut down all ports, except those needed for joining/authenicating to the domain. I can also filter the IP on that machine to just those address that we are expecting our users to be at (it's a small group) On the web based application servers, I imagine all we need to open is port 80 (or 8080 in the case of TFS) One of the problems that I'm faced with is what domain name to use for this Active directory. Should I go with "ourDomainName.com" or "OurDomainName.local" If I choose the latter, does that not mean that I'll have to get all our users to change their DNS address to point to our server, so it can resolve the domain name (I guess I could also distribute a host file) Perhaps there is another alternative that I'm completely missing.

Read the article

Guide To Setting Accessing PhpMyAdmin On NGINX, Ubuntu 11.04, EC2 Remote MySQL Instance

- by darkAsPitch

I have setup a domain name to run on amazon ec2 running ubuntu 11.04, nginx and php5-fpm. The domain name works great, I have setup it's own sites-available configuration file and sym-linked it to sites-enabled. I installed phpmyadmin via sudo apt-get install phpmyadmin and followed the instructions. I then added this just above my /etc/nginx/nginx.conf file and restarted nginx. server { listen 80; server_name phpmyadmin.domain.com; location / { root /usr/share/phpmyadmin; index index.php; } #make sure all php files are processed by fast_cgi location ~ \.php { # try_files $uri =404; fastcgi_index index.php; fastcgi_pass 127.0.0.1:9000; include fastcgi_params; fastcgi_split_path_info ^(.+\.php)(/.+)$; fastcgi_param PATH_INFO $fastcgi_path_info; fastcgi_param PATH_TRANSLATED $document_root$fastcgi_path_info; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; } } I have also added the appropriate dns A records for phpmyadmin.domain.com phpmyadmin.domain.com just shows a 404 error code. All other subdomains do not respond at all so at least something is working here. FYI I have edited the /etc/phpmyadmin/config.inc.php file so that I can connect to a remote MySQL Database. What else do I need to do?

Read the article

Wireless router setup for 1-1 NAT

- by Carlos

What I have: A linksys router WAG160N with firmware version 2 A "pool" of 5 external static IP's provided by my ISP 213.xx.xxx.n All the required configuration values for the static IPs such as (Subnet Mask, Gateway and static DNS 1, 2, 3) Current WAN Configuration: Encapsulation: RFC 2364 PPPoA Multiplexing: VC QoS type: UBR DSL modulation: MultiMode What's connected to the network: 1 x Server (That I want to make available to the outside) 5 x Desktops with static internal IP's, such as 192.168.0.xx 2 x Network printers, also with internal static IP's 2 x Laptops 1 x NAS (Network Attached Storage) also on static IP What I want to do: I would like to make the server available from outside the network, for example from your house. The problem is that Im not really sure how to do this. I have tried following the steps on the instruction manual in Linksys but they do not seem to work, once I set it up as shown bellow, I loose internet and all hell breaks loose. Going into further detail, I would prefer if the network is changed as little as possible, by this I mean that all the computers stay networked within eachother and only the server is accessible from the outside the network. What I need HELP with: I have read around that it is possible to set a 1-1 NAT (I know where it is in the menu but have no clue what it does...) so that I can NAT a single public IP directly to a single private IP (in our case the server). But please, How do I do that? Or maybe an alternative?

Read the article

Best way to troubleshoot intermittent network outages?

- by Ben Scheirman

We have a Comcast 50/10 line into our office. We keep seeing very short but sometimes frequent drops in our internet service. It's enough to kick you off of skype and stop any websites from loading, which is obviously affecting our productivity. We've tried 4 different routers, we've tried moving everyone off of wireless and onto wired via a switch and so far nothing has helped. Right now we're on a Cisco SB WRP400-G1 router. Attached to the router is a 16 port switch going to the ports in all of the offices. We've moved to OpenDNS in the case that it was the comcast DNS servers going down. Today we tried putting the modem, router, and switch on a UPS to make sure it wasn't power fluctuations that was causing it. Every time we call Comcast, by the time they are here the internet is working fine. I'd like to somehow prove that the problem is with Comcast, so if that means plugging in a machine directly into their router and collecting data all day, I'm up for that. I just want to hear ideas on what tools to run and how to collect this data. I could just continuously ping google.com all day long but I'm not sure how valuable that data would be. Thoughts?

Read the article

Does anyone know how to "tcpdump" traffic decrypted by Mallory MITM? [migrated]

- by chriv

I'm looking for some help in capturing network traffic that I can analyze in Wireshare (or other tools). The tool I'm using is mallory. If anyone is familiar with mallory, I could use some help. I've got it configured and running correctly, but I don't know how to get the output that I want. The setup is on my private network. I have a VM (running Ubuntu 12.04 - precise) with two NICs: eth0 is on my "real" network eth1 is only on my "fake" network, and is using dnsmasq (for DNS and DHCP for other devices on the "fake" network) Effectively eth0 is the "WAN" on my VM, and eth1 is the "LAN" on my VM. I've setup mallory and iptables to intercept, decrypt, encrypt and rewrite all traffic coming in on destination port 443 on eth1. On the device I want intercepted, I have imported the ca.cer that mallory generated as a trusted root certificate. I need to analyze some strange behavior in the HTTPS stream between the client and server, so that's why mallory is setup in between for this MITM. I would like to take the decrypted HTTPS traffic and dump it to either a logfile or a socket in a format compatible with tcpdump/wireshark (so I can collect it later and analyze it). Running tcpdump on eth1 is too soon (it's encrypted), and running tcpdump on eth2 is too late (it's been re-encrypted). Is there a way to make mallory "tcpdump" the decrypted traffic (in both directions)?

Read the article

Issues regarding internet connectivity

- by andySF

Hello. My problem started when Yahoo Messenger stopped connecting. I've tried to see if Internet Explorer was working but will not load any page. The diagnostics of Internet Explorer says that is something wrong with my dns(using just ip of google or yahoo or my local webserver was not working). I use Windows 7 and at the moment i've had Internet Explorer 8 and after a lot of failing updates to ie9 I've successfully install the Romanian version of IE9(now i have ie8 after a system restore). Then I installed the service pack 1. I've done a lot of things and I will try to enumerate them, but my problem persists. Settings from Yahoo Messenger and Internet Explorer are OK. I've try to reset winsock and ip from netsh. I've scanned my pc with spybot, mallwarebytes, Trojan Remover(simplysup), Loaris Trojan Remover, Avast, Nod32, Kaspersky, Bitdefender,alot of registry cleaner including CCleaner and maybe others that I cannot remember now. I reset the registry permissions using subinacl. At a moment my files permissions was set jut to "trusted installer" and I've put the permission back to files and folders using the model of other windows 7 machine. I have try so many things that now i'm stuck in a loop using different security tools to check for problems. Oh, and my virtual machines are working just fine.(I'm using VirtualBox) Please Help. PS, Reinstalling Windows is not an option. Thank you!

Search Results

Search found 8343 results on 334 pages for 'split dns'.

Page 271/334 | < Previous Page | 267 268 269 270 271 272 273 274 275 276 277 278 | Next Page >

- by aioobe

- by jerhinesmith

- by hub

- by Darryl Hein

- by ahmedre

- by CraneStyle

- by mtp

- by Dalin Seivewright

- by Zac B

- by EpsilonVector

- by sysadmin1138

- by user27574

- by monster

- by makerofthings7

- by JohnyD

- by Mark Rose

- by mfsaint

- by andrew

- by Ton Hoekstra

- by Ralph Shillington

- by darkAsPitch

- by Carlos

- by Ben Scheirman

- by chriv

- by andySF

< Previous Page | 267 268 269 270 271 272 273 274 275 276 277 278 | Next Page >