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  • debian gateway using iptables

    - by meijuh
    I am having problems setting up a debian gateway server. My goal: Having eth1 the WAN interface. Having eth0 the LAN interface. Allow both ports 22 (SSH) and 80 (HTTP) accessed from the outside world on the gateway (SSH and HTTP run on this server). What I did was the following: Create a file /etc/iptables.rules with contents: /etc/iptables.rules: *nat -A POSTROUTING -o eth1 -j MASQUERADE COMMIT *filter -A INPUT -i lo -j ACCEPT -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -i eth1 -p tcp -m tcp --dport 22 -j ACCEPT -A INPUT -i eth1 -p tcp -m tcp --dport 80 -j ACCEPT -A INPUT -i eth1 -j DROP COMMIT edit /etc/network/interfaces as follows: /etc/network/interfaces: # The loopback network interface auto lo iface lo inet loopback pre-up iptables-restore < /etc/iptables.rules auto eth0 allow-hotplug eth0 iface eth0 inet dhcp #auto eth1 #allow-hotplug eth1 #iface eth1 inet dhcp allow-hotplug eth1 iface eth1 inet static address 217.119.224.51 netmask 255.255.255.248 gateway 217.119.224.49 dns-nameservers 217.119.226.67 217.119.226.68 Uncomment the rule net.ipv4.ip_forward=1 in /etc/sysctl.conf to allow packet forwarding. The static settings for eth1 such as the ip address I got from my router (which I want to replace); I simply copied these. I have a (windows) DNS + DHCP server on ip address 10.180.1.10, which assigns ip address 10.180.1.44 to eth0. What this server does is not really interesting it only maps domain names on our local network and assigns one static ip to the gateway. What works: on the gateway itself I can ping 8.8.8.8 and google.nl. So that is okey. What does not work: (1) Every machine connected to eth0 (indirectly via a switch) can not ping an ip or a domain. So I guess the gateway can not be found. (2) Also when I configure my linux machine (a laptop) to use a static ip 10.180.1.41, a mask and a gateway (10.180.1.44) I can not ping an ip or domain either. This means that maybe my iptables is incorrect of not loaded correctly. Or I maybe have to configure my DNS/DHCP on my windows machine. I have not reset the windows machine net, restart the DNS/DHCP services, should I do this? I did not install dnsmasq as desribed here: http://blog.noviantech.com/2010/12/22/debian-router-gateway-in-15-minutes/. I don't think this is necessary?

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  • Missing startup screens and slow bootup/login after using WinClone to expand Bootcamp partition

    - by user26453
    I used WinClone to backup my Bootcamp partition, which was a Windows 7 Ultimate install, on my late 2006 Macbook Pro. I desired to expand the Bootcamp partition's size. It worked reasonably well with some hiccups along the way and some remaining issues. First issue I ran into was the Bootcamp Assistant utility - it would not recreate the partition. This was due to a lack of contiguous space that is required for the Bootcamp partition. As a result I wiped the whole drive and reinstalled Snow Leopard, did the minimum amount of system updates, and created and formated a new Bootcamp partition. WinClone restored the image without complaint and the image was automatically resized to the new partition's size. Second issue I ran into was after the first boot into Windows. The first thing I noticed was that instead of the newer "slick" startup screen (4 colors wisping around, a Windows 7 title), there was more of an old school style startup screen (a progress bar with block increments, yellow/greenish color, nothing else really). The initial bootup to a login screen was slow, perhaps as Windows dealt with the partition changes. After logging in, the screen goes blank and the computer seems to hang for a minute, before completing the login. After subsequent restarts, the slick screen is still missing, boot to login screen is normal, but the time from login to desktop active is still very slow. As a side note, this behavior of a long time from login to the desktop finally loaded I've previously only seen when the computer would try to hibernate and fail (battery is really bad). On the next startup, I would see this behavior, but not subsequently. So a potential cause: I imaged the partition after hibernating out of Windows. From reading some posts/guides on the subject, this was not recommended, and perhaps shouldn't even have worked? Could the partition be stuck in some weird mode as a result that makes the boot issues appear? I've attempted to disable hibernation and restart, trying to delete the .sys file that hibernation uses. Other fixes I'm thinking of attempting are booting a Win7 disc and repairing the install/partition. I can't shake the nagging feeling something isn't right as a result of the modified boot screens and the slow login process.

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  • Recover backup copy of a ubuntu linux installation on a usb stick using dd

    - by user10826
    Hi, I installed Ubuntu 10.04 on a usb stick in persistent install mode. So I could boot the laptop or my desktop computer with the stick, at boot time. Once I needed the 8GB stick for another purposes so I thought about coyping it to my desktop doing from mac os x: dd if=/dev/disks3s of=/Users/jack/Desktop/usb_copy Now I am trying to do the opposite, after having used the stick, which was formatted to NTFS, just doing dd if=/Users/jack/Desktop/usb_copy of=/dev/disks3s but although I can see that almost of the files are there, I can not boot again. IT is also strange the the file permissions are kind of strange, something like _user What can I do ? Thanks

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  • Using custom variables in Google Analytics funnels?

    - by Matt Huggins
    Google Analytics allow you to view how many users completed funnels through a set of pages in order to reach a goal URL. The service also allows you to pass custom variables when tracking a page view. Is it possible to combine the two, such that I create a funnel based upon the vale of a custom variable set for each visitor?

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  • postfix header_checks using regexp proper setup

    - by Philip Rhee
    I just can't seem to figure out why header_checks are not being evaluated. I'm on Ubuntu 12.04, postfix 2.7, dovecote, spamassasin, clamav, amavis. I add following line to /etc/postfix/main.cf : header_checks = regexp:/etc/postfix/header_checks And here is header_checks : /From: .*/ REPLACE From: [email protected] To test out regexp : #postmap -q "From: <werwe>" regexp:/etc/postfix/header_checks which evaluates correctly and give me return output of : REPLACE From: [email protected] However, when I try to send email from commandline or from php webpage, postfix will not replace the From header. I'm stumped.

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  • Using NOPASSWD for specific commands in sudoers file, PASSWD for all others

    - by jberryman
    I would like to configure sudo such that users can run some specific commands without entering a password (for convenience) and can run all other commands by entering a password. This is what I have, but this does not work; a password is always required: Defaults env_reset Defaults timestamp_timeout = 1 root ALL=(ALL:ALL) ALL # Allow members of group sudo to execute any command %sudo ALL=(ALL:ALL) NOPASSWD: /usr/sbin/pm-suspend, /usr/bin/apt-get, PASSWD: ALL #includedir /etc/sudoers.d Note that this is a debian system which uses this adding users to the "sudo" group method. Thanks.

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  • Recover backup copy of a ubuntu linux installation on a usb stick using dd

    - by user10826
    Hi, I installed Ubuntu 10.04 on a usb stick in persistent install mode. So I could boot the laptop or my desktop computer with the stick, at boot time. Once I needed the 8GB stick for another purposes so I thought about coyping it to my desktop doing from mac os x: dd if=/dev/disks3s of=/Users/jack/Desktop/usb_copy Now I am trying to do the opposite, after having used the stick, which was formatted to NTFS, just doing dd if=/Users/jack/Desktop/usb_copy of=/dev/disks3s but although I can see that almost of the files are there, I can not boot again. IT is also strange the the file permissions are kind of strange, something like _user What can I do ? Thanks

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  • AFXR problem using gradwell secondary DNS

    - by Roaders
    Hi All I use Gradwell.com to provide secondary DNS but I keep getting e-mails along the lines of the following saying that it's not working: You have asked us to provide a secondary DNS service for the following domain(s) Unfortunately, the primary DNS server(s) you specified are not permitting the necessary zone transfers from our servers, or they are not answering "SOA" queries for your domain correctly. I have gone through the support procedure and they weren't that helpful. They have suggested the following: Our secondline team have suggested setting the AXFR to use anouther machine. This will ensure that the transfer is not locked down to one machine and should allow any machine to make the request I don't really know what AFXR is and I only have 1 production machine so I can't set the AFXR to use another one! In previous support correspondence we confirmed that I am allowing transfers to the correct IP and that I have the correct ports open on the firewall. I am running Windows Server 2003. What can I do to try and get these zone transfers working? Thanks

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  • Send encrypted mail using GPG by command-line?

    - by Mohammad AL-Rawabdeh
    A few days ago I asked about how I can secure email and many people advised me to use PGP tool, and I read about it and I use it. Now I want to write a batch file to send encrypted email with attachments. I know how I can generate key, exchange key with other side and encrypt email with PGP mail but until now I don't know how I can integrate PGP tool with my mail and how I can send the encrypted email. In other words, how can I send encrypted email that encrypts with PGP tool to other side by command line (batch file)?

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  • Need help using a super scope

    - by Vdub
    I have a windows server 2008 r2 standard running our DCHP, DNS, and AD. also I have (3) HP Pro Curve 2510-G switches (J9280A). Right now our LAN is set up 192.168.50.2-192.168.50.254 on our sub-net (A) and another scope with 192.168.51.2-192.168.51.254 sub-net (B) both have sub-net mask of 255.255.255.0. The same server is our DNS which is 192.168.50.242 and our firewall (watchguard) is the gateway at 192.168.50.1. Right now the sub-net (B) does not have DHCP active so only sub-net (A) is giving a pool. My problem is that we are trying to have open WiFi on our network and i am assuming that i can use the sub-net (B) for that if i activate it and use sub-net (A) for our staff only. I have noticed that when i set up a static on a client pc and set it to 192.168.51.x i cannot use the DNS of 192.168.50.242 however i can use 8.8.8.8 and it works fine, i am guessing that because it is on a different sub-net? Forgive me as i am very new at this and dont know a lot. Is there easy way with the equipment i have to a accommodate wifi for hundreds of people without causing problems for our staff? (multiple same IP address assigns) I appreciate any and all info!

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  • Form recognition using OCR and return image of the value

    - by Jonathan
    I'm on a project that process hundreds of forms. The forms have consistent formats but are filled out by hand by different people. I need a way to quickly processing all of these data into electronic forms. OCR recognition for typed document seems mature but for hand-writting is very lacking. For this thought, let's consider a form with several fields like this. Field_1: Value1 (example, Name: John, where Name is Field and John is value) Considering that forms are structured and typed, OCR should be able to recognize the fields. However, for the values of the fields, they are written and OCR will perform very poorly. So is there a way where the fields would be recognized on the imagem, then a image chunk of the value would be returned? Thanks.

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  • Access forbidden! using xampp on macosx 10.5

    - by erikvold
    I installed xampp back around January 2009, and CF8 to test coldfusion on my macbook (note: I do not think that this issue is related to CF, but only xampp). I only ever used the apache part of xampp, and this was working for over a year. In the last couple of months at the most I've started getting the following error message (even for none CF sites, and non .cfm pages, the error occurs for .html files..): Access forbidden! You don't have permission to access the requested object. It is either read-protected or not readable by the server. If you think this is a server error, please contact the webmaster Error 403 erikvold.lan Sun Mar 21 20:58:45 2010 Apache/2.2.11 (Unix) DAV/2 mod_ssl/2.2.11 OpenSSL/0.9.7l PHP/5.2.9 mod_perl/2.0.4 Perl/v5.10.0 As far as I recall I haven't made any change, so it's like it was working for a year then just stopped working..

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  • How to share internet connection on Mac os x to Virtualbox vm’s using Host-only

    - by redben
    In one line : is the following possible : Airport <- "osx bridge" - vbox-Host-only - vm's Virtualbox (3.1.4) setup : Host : Mac OS X 10.5 Guest : Ubuntu Linux adapter1 - Bridged (en1: Airport) : To give the vm access to internet and communicate when Airport is connected adapter2 - Host-Only (vboxnet0) : To enable host/guest communication when Airport is not connected I'd like to make it simpler and only keep adapter 2 (host-only) and relying on os x connection sharing/bridging I thought i could just keep the Host only configuration, and on the host go to internet sharing and select "share from airport" to vboxnet0 . Only to find out that vbox's virtual interface doesn't appear in the interfaces list on os x preferences. I know that on a linux host you could install something called bridge-utils and use that to bridge the two insterfaces. Is there any thing like that for Mac ?

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  • Using OSX home directories from linux

    - by Steffen
    I'm running an OSX (Snow Leopard) Server with OpenDirectory, which is nothing else than a modified OpenLDAP with some Apple-specific schemas. However, I want to reuse this directory on some of my Linux (Debian Squeeze) boxes. It's no problem to authenticate against OSXs LDAP Server, this works fine already. What I struggle with is the way the home folders are specified in OSX. If I query the passwd config on one of my linux machines, the OSX imported entries are looking like this myaccount:x:1034:1026:Firstname Lastname:/Network/Servers/hostname.example.com/Volumes/MyShare/Users/myaccount:/bin/bash While those network home folders might be fine for OSX-Clients, I don't want those server based paths on my linux machines. I saw that there is an NFSHomeDirectory Attribute in the OSX User inspector, but if I change this the whole user home path gets changed. Since my users should be able to login on both systems, OSX and Linux, this is not what I want. Does anyone have an idea how I must configure OSX to make my linux machines use home folders like /net/myaccount and leave the configuration for OSX clients untouched?

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  • Using WebSphere CloudBurst with PowerVM to AIX virtualization over a cloud

    - by ADD Geek
    hi there we are studying the virtualization option to reduce our datacenter cost, and this research was assigned to me. we looked into alternatives and we almost reached a conclusion that PowerVM is the only option to virtualize pSeries servers. we found no signs of cloud support explicitly mentioned in any document, however there was the mention of CloudBurst. from the videos we watched and the documents we read, it seems that CloudBurst is more oriented towards Application Servers (WebSphere Software). but our environment is not relying only on WebSphere. we have some banking applications, Oracle Databases and MQ/Broaker. the question is: 1- can we virtualize the existing applications (all running AIX) on a cloud running on top of some of the existing servers? (given that we do the sizing properly) 2- is PowerVM to run on top of CloudBurst? 3- if the above solution is applicable, is this some sort of HA solution (since the VM will run on top of multiple physical boxes, while the same physical box will run multiple live images) thanks for your help

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  • Recommendations on managing dot files for users using Puppet

    - by Beaming Mel-Bin
    Goal is to have a collection of dot files (.bashrc, .vimrc, etc.) in a central location. Once it's there, Puppet should push out the files to all managed servers. I initially was thinking of giving users FTP access where they could upload their dot files and then having an rsync cron job. However, it might not be the most elegant or robust solution. Wanted to see if anyone else had some recommendations.

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  • Programs don't have permissions when using absolute path

    - by Markos
    I have asked this on askubuntu but didn't get a single response in days, so I will try it here. I have directory structure like this: /path/dir1 - all users in group1 must have rwx permissions, including subdirs and newly created dirs /path/dir1/dir2 - also users in group2 must have rwx permissions So what I tried is that I used ACL. getfacl /path/dir1 # file: /path/dir1 # owner: root # group: nogroup user::rwx group::--- group:group1:rwx mask::rwx other::--- default:user::rwx default:group::--- default:group:group1:rwx default:mask::rwx default:other::--- getfacl /path/dir1/dir2 # file: /path/dir1/dir2 # owner: root # group: nogroup user::rwx group::--- group:group1:rwx group:group2:rwx mask::rwx other::--- default:user::rwx default:group::--- default:group:group1:rwx default:group:group2:rwx default:mask::rwx default:other::--- That shows that I have granted rwx to group1 in /path/dir1 and rwx to group1 and group2 in /path/dir1/dir2. Now it gets interesting. Let's assume, that user2 is member of group2. If I issue commands as user2: cd /path/dir1/dir2 mkdir foo Then folder is succesfully created. However, if I do this: mkdir /path/dir1/dir2/foo I get permission denied error. I have tried extensively to resolve the problem. What I have found is that ACL is to blame. If I add permissions to group2 in /path/dir1 it starts to work. Also if I completely remove /path/dir1 ACL it starts to work. Obviously I am missing something VERY basic. I don't have much experience with linux, but this is a no-brainer on Windows. I have spent way too many hours to resolve this basic requirement. If you need more information, I will try to update the question, so feel free to ask!

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  • IPSec VPN using ZyWALL IPSec VPN Client: unable to connect from some providers

    - by Reshi
    I'm trying to configure an IPSec VPN to one company from my home. The company has SANET internet service provider. I was able to create a VPN connection from another company that has the same internet service provider. The problem begins when I'm trying to connect from another ISP like Orange or Telekom. Here is the log from ZyWall: 20120816 10:06:18:359 Default (SA Gateway-P1) SEND phase 1 Main Mode [SA] [VID] [VID] [VID] [VID] [VID] 20120816 10:06:18:375 Default (SA Gateway-P1) RECV phase 1 Main Mode [SA] [VID] [VID] [VID] [VID] [VID] [VID] [VID] [VID] 20120816 10:06:18:390 Default (SA Gateway-P1) SEND phase 1 Main Mode [KEY_EXCH] [NONCE] [NAT_D] [NAT_D] 20120816 10:06:18:718 Default (SA Gateway-P1) RECV phase 1 Main Mode [KEY_EXCH] [NONCE] [NAT_D] [NAT_D] 20120816 10:06:18:734 Default (SA Gateway-P1) SEND phase 1 Main Mode [HASH] [ID] 20120816 10:06:18:750 Default (SA Gateway-P1) RECV phase 1 Main Mode [HASH] [ID] 20120816 10:06:18:750 Default phase 1 done: initiator id [email protected], responder id 111.112.113.114 20120816 10:06:18:765 Default (SA Gateway-Tunnel-P2) SEND phase 2 Quick Mode [HASH] [SA] [KEY_EXCH] [NONCE] [ID] [ID] 20120816 10:06:18:953 Default (SA Gateway-Tunnel-P2) RECV phase 2 Quick Mode [HASH] [SA] [KEY_EXCH] [NONCE] [ID] [ID] 20120816 10:06:18:953 Default (SA Gateway-Tunnel-P2) SEND phase 2 Quick Mode [HASH] 20120816 10:06:48:968 Default (SA Gateway-P1) SEND Informational [HASH] [NOTIFY] type DPD_R_U_THERE 20120816 10:06:48:984 Default (SA Gateway-P1) RECV Informational [HASH] [NOTIFY] type DPD_R_U_THERE_ACK ZyWall informs me that the tunnel was opened. But I can't ping or access any computer in the network. My configuration at home: ISP: Orange Optical connection Terminal: GPON OPTICAL NETWORK TERMINAL G-25E Router: TPLink TL-WR941N --> SPI Firewall Enabled --> VPN - IPSEC Passthrough Enabled I was wondering if the problem could not be on ISP side (that he blocks somehow this connection because in SANET ISP it worked fine) or even in my terminal or router. What could I check? Where could be the problem ?

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  • Slow ASP.NET site using IIS6

    - by lars
    Hi, I have two servers, one virtual and one physical, running the exact same site on both machines. Both machines are running on ~ 2% CPU load and very much RAM available for usage. Somehow the site, with cache turned off ofcourse, loads in ~ 500ms on the virtual machine (which is a dev-server by the way) but almost 3 full seconds on the physical machine. They're both running Server 2003, IIS6 aswell as asp.net version 2.0 Any ideas where I can start troubleshoot this? Best Regards LP

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  • Limit maximum incoming connections to a port using iptables

    - by Harley
    I have a server that has apache listening on a number of ports. Some ports are used for configuring the server, and another is used to download large files. My problem is that when I have a large number of clients downloading files, the web interface is uncontactable. I would like to limit the number of clients connecting on the "large file" port so that apache always has available connections to configure the server. A REJECT is fine, the client trying to download the file will back off and retry later. Each client only has one connection open to the server at a time, so limiting by IP won't work. I know I could put something in front of apache to manage this, but I'd really like to do it in iptables, without adding more software.

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  • Using a Level 2 switch as a core switch

    - by imtech
    I have a small user base of about 20 people on at a time and spiking up to about 80 people during peak times. Most people (80+%) are connected over our Aruba managed wireless system. We have a Windows Domain. We have 3 24-Port switches all connecting back to a central 48-port switch where additional access ports, firewall, servers, and wireless controller all centrally connect back to. It's a flat network with dumb switches. I'm in the process of upgrading our infrastructure. Cisco pricing for switches is pretty high for us so I've been looking at HP Procurves which seem to be within our budget range. I want to eventually make use of 802.1x, SNMP, QoS for possible VOIP upgrades, VLAN to separate guest VLAN from authenticated users, and other more advanced features. PoE would be nice but that's probably too expensive for us. I was thinking of having our core switch be a Procurve 2610 and the rest of our switches that centrally connect to it be Procurve 2510s. A true and full blown level 3 switch is way out of our price range but a 2610 seems to be good enough for us. The 2610 does static routing which ought to be good enough for us but I'm in unfamiliar territory so I'm looking for any gotchas. Also, should all the switches be 2610s or just the core switch? Do I even need the 2610, can I just go with all 2510s? I'm new to VLANs as well so I'm not sure what it is I need but I would like an affordable infrastructure that won't need replacing 2-3 years down the line because I choose a product that was lacking.

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  • Calculate using an Averaged coumn in a pivot

    - by Emily Y
    Hi, I have a pivot which includes goals and year results. Because goal is the same on each meausure, I have to average the goal in the pivot in order to show the correct amount. I then want to calculate v% between the goal and the year result. Because the goal is averaged, v% cannot be calculated correctly. Does anyone know of a way to do calcuation like this in a pivot? Thanks a lot, Emily

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