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  • SMTP Relay through exchange

    - by John
    Hi guys, We have a bit of a problem in that we want our printers to email our contractor whenever they develop a fault. The problem is on our corporate network we have no access through the firewall to the internet preventing us to use the external SMTP server. So i suppose the question is can we use our exchange server to do this? IE could I run an SMTP service that would forward to the exchange server which would then send the mail to the contractor? Any ideas welcome! Thanks John

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  • Virtual Disk Service Loader has stopped working

    - by Leigh Riffel
    We have several relatively recent (less than 1 week) installations of Windows Server 2008 R2 Enterprise that are getting this error whenever we open Disk Management. The application name is vdsldr.exe and the Problem Event Name is BEX64. The windows firewall was turned off and the service disabled. The Virtual Disk service was started (identical results when it is stopped). The computers are virtual machines running on VSphere, so that could be part of the problem. The strange thing is that Disk Manager worked fine when the VMs were first created.

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  • BSOD - probably video card prob

    - by Shimmy
    I'm receiving the following BSOD: I've tried installing the latest driver from nVidia (296.10), but it says "NVIDIA installer cannot continue", "The graphics driver could not find compatible graphics hardware.": I installed it manually at device manager, but problem still occurs. The problem does not happen in safe mode at all. Note: After restarting the computer when seeing this BSOD, the BIOS welcome screen is full of random black dots spread around: Any solutions? Update: I've tried disabling Aero by following this guide, but that didn't help.

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  • Full screen flash lags on Windows 7

    - by Chmod
    I have been experiencing an issue since I've up upgraded to Windows 7 where all flash videos have horrible frame rates when run in full screen mode. I have tried multiple browsers and i have the latest version of flash and video drivers. I have tried re-installing flash and disabling hardware acceleration. The problem occurs on youtube and hulu. This is a clean install on a Core 2 duo with 4GB RAM and an Nvidia 8400M GS.

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  • DYNDNS setup with TightVNC on Windows Server 2008 R2

    - by StealthRT
    Hey all, i seem to be having a problem with getting ports to forward on my Windows Server 2008 R2 PC. I already set all my port forwarding for 5900/5800 on my router for my PC's IP address (192.168.1.22) but when i try to use the TightVNC PFPortChecker on port 5900 it tells me its not opened! I can not even connect to my DYNDNS server name (xxxxxxx.dyndns.org). As a side note, i am running Windows XP SP3 within a VirtaulBox inside Windows Server 2008 R2 but running the PFPortChecker in Windows 2008 R2 brings the same results as it does in the VM. I also added them to the Windows Firewall Advanced Security form to add those inbound ports for full access. What could i possibly be missing? Thanks for your time! David

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  • Best solution for Multi-WAN failover (inside & out)?

    - by Sean O
    Looking for a way to setup 2 ISPs in failover mode, for both incoming & outgoing traffic, for our small (<100 devices) network. The leading contender for now seems to be the Peplink Balance 310. However, a reseller I spoke with said it's great for 100% outgoing connectivity, but didn't seem to be confident in its abilities to handle incoming traffic. This is important as we host our own web site, Exchange e-mail, and virtual desktops (RDP). Do any Peplink owners use this for failover of incoming traffic? Are there other devices I should be considering? We're currently using a Cisco 1800 series router & ASA 5500 series firewall, with Comcast & T-1 lines (the goal being to replace the T with DSL/FiOS {whenever that becomes availble}). Price range: ~$1000 - $2500 USD. Thanks.

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  • Cyrus IMAP: Unable to connect to remote host: Connection refused

    - by Nick
    I'm working on setting up a Cyrus 2.2 IMAP server on Ubuntu Server 9.04. If I telnet from the server itself: # telnet localhost imap I get: * OK IMAP Cyrus IMAP4 v2.2.13-Debian-2.2.13-14ubuntu3 server ready Which is what I should be seeing. If I try from another machine on the network: telnet 192.168.5.122 imap I get: telnet: Unable to connect to remote host: Connection refused UPDATE: From /etc/cyrus.conf # add or remove based on preferences imap cmd="imapd -U 30" listen="imap" prefork=0 maxchild=100 imaps cmd="imapd -s -U 30" listen="imaps" prefork=0 maxchild=100 #pop3 cmd="pop3d -U 30" listen="pop3" prefork=0 maxchild=50 #pop3s cmd="pop3d -s -U 30" listen="pop3s" prefork=0 maxchild=50 #nntp cmd="nntpd -U 30" listen="nntp" prefork=0 maxchild=100 #nntps cmd="nntpd -s -U 30" listen="nntps" prefork=0 maxchild=100 To the best of my knowledge, there is no firewall running on the box. I've tried restarting the saslauthd and cyrus2.2 daemons, with no effect. What else can I try?

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  • bradford persistent agent login not coming up.

    - by alex
    Wired connection. Desktop. It downloads and installs fine but at the point where the login is supposed to pop up. Nothing happens. Bradford says I have normal network access and it never shows it scanning. It just installs and does nothing. I have all of the updates and everything Bradford needs. And I've used the internet at this dorm before witb this computer. Tried reinstalling.disabling my firewall. Any advice would be appreciated

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  • DNS Piority in home-use Routers

    - by DucDigital
    Force DNS on router instead of ClientSide DNS like OpenDNS or GooglePublicDNS Im trying to implement some site blocking using DNS, the hardware is simple Routers like Linksys and Netgear that you use in house for family purpose. Currently I tried to set a computer to opendns, while my router set to something else, when check using opendns.com/welcome, the computer is identified as opendns. and Vice versa, this time the computer didn't identified as opendns. Is it posible to force user to use our DNS instead of their setting DNS?

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  • DNS Piority in home-use Routers

    - by DucDigital
    Force DNS on router instead of ClientSide DNS like OpenDNS or GooglePublicDNS Im trying to implement some site blocking using DNS, the hardware is simple Routers like Linksys and Netgear that you use in house for family purpose. Currently I tried to set a computer to opendns, while my router set to something else, when check using opendns.com/welcome, the computer is identified as opendns. and Vice versa, this time the computer didn't identified as opendns. Is it posible to force user to use our DNS instead of their setting DNS?

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  • ECC RAM in GA-G33M-DS2R? Or any Gigabyte/G33M motherboard?

    - by Gregory Hoerner
    I'm looking to retire a server which has 12GB of ECC DDR2 RAM. I'd like to upgrade my multi-purpose machine (firewall, file server, VM host for Windows Home Server, etc.) using the RAM from the server. I was just wondering: Has anyone had experience using ECC RAM in a GA-G33M-DS2R motherboard (or any Gigabyte GA-G33M-XXXX motherboard for that matter)? Has anyone had experience using ECC RAM in a motherboard with a G33M chipset. I've searched everywhere and found the attitude positive of ECC memory working in a Non-ECC board, but I would like some specific positive feedback before proceeding tonight. I have to kick the entire house offline, which I don't like to do without good reason :)

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  • IPcop Multiple WAN Subnets

    - by obsidian
    We have an IPcop firewall and have had no issues with it. We've had a block of 10 IP addresses from our colocation provider and have been able port forward from those to internal servers as needed. We've recently needed additional IPs and the colocation provider issued an additional block of 10. The problem: The 10 new IP addresses issued are in a different subnet with a different gateway. The question: How do I add the new gateway into IPcop? How do I make it so that any outbound traffic in response to any inbound traffic from a new IP go back out through the new gateway? I attempted to add a static route via the console using the following command: route add -net x.x.x.x gw x.x.x.x netmask 255.255.255.192 I also added the new IPs as aliases and setup port forwarding as I've done with the existing IP block. However, when I attempt to access a web server from an external workstation, it just times out. Thanks in advance for your assistance.

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  • Wyse Z Class Thin Client (WES7) Image Deployment

    - by nsr81
    We are currently working on deploying a few Wyse WES7 thin clients (Z Class, exact model escapes me at the moment). We have WDM setup, and are able to see new clients show up, interact with them, pull/push images. Our current workflow is something like this: Unpack & boot up the device Disable Windows Firewall, reboot Device shows up in WDM Publish our custom image to the new device. My question is whether or not there is a way I can bypass step 2, and put my image on the client right out of the box. Either using PXE or USB boot disk, such that I can boot into some sort of menu and tell the client to pull a particular image from the WDM server. With HP thin clients, we have a rule setup which detects new clients on the network and pushes our custom image to them first time they show up. I haven't been able to figure it out with Wyse.

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  • Virtual Box Pen Test Lab Set Up

    - by hairyjewbear
    So i'm trying to set up a pen test lab in virtual box on my windows 7 host. I have 3 guest OS's installed: 1.) BackTrack5 2.) Centos 5 Server/Snort (My Snortbox) 3.) Win XP (Unpatched) I have 3 Ethernet adapters created IP'S 192.168.191.1 192.168.127.1 192.168.56.1 My goal is to use BackTrack5 to nmap the Win XP guest and have the snort box sniff the network. I'm new to networking and virtualization and I need help setting up my virtual network to get this to work. What should I do? All help appreciated Centos: Adapter1: NAT Adapter2: Host-only Adapter3: Internal Network Backtrack: Adapter1: Internal Network XP: Adapter1: Internal Network Also take for granted I'm on a University Network with a ridiculous firewall so I need to stay all within the host

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  • Old operational master still thinks it is the "one"

    - by Doug
    Hi there, I have a domain with 3 AD servers for now i'll just call them: AD01 (Win 2008 GC, Operations master) AD02 (Win 2008 GC) AD03 (Win 2003 GC) A couple of months there was some hardware issues with AD01 so the operations master, PDC and Infrastructure Master was moved to AD02. All machines where on while this was happening. AD01 (Win 2008 GC) AD02 (Win 2008 GC, Operations master) AD03 (Win 2003 GC) AD01 was then shutdown for a month. Upon starting this machine up with replaced hardware (NIC and RAID card) i now have a weird problem. AD01 Thinks it is operations master still in AD on the local box AD02 & AD03 Thinks AD02 is operations master in AD on both boxes When running DCDIAG on AD01 i get a number of issues (listed below) When running "dcdiag /test:advertising" on AD01: Doing primary tests Testing server: Default-First-Site-Name\AD01 Starting test: Advertising Warning: DsGetDcName returned information for \\ad02.domain.local, when we were trying to reach AD01. SERVER IS NOT RESPONDING or IS NOT CONSIDERED SUITABLE. ......................... AD01 failed test Advertising Running partition tests on : ForestDnsZones Running partition tests on : DomainDnsZones Running partition tests on : Schema Running partition tests on : Configuration Running partition tests on : domain Running enterprise tests on : domain.local When running "dcdiag" on AD01 i get the following errors (excerpt of the Final output): Testing server: Default-First-Site-Name\AD01 Starting test: Advertising Warning: DsGetDcName returned information for \\ad02.domain.local, when we were trying to reach AD01. SERVER IS NOT RESPONDING or IS NOT CONSIDERED SUITABLE. ......................... AD01 failed test Advertising Starting test: FrsEvent There are warning or error events within the last 24 hours after the SYSVOL has been shared. Failing SYSVOL replication problems may cause Group Policy problems. Starting test: NCSecDesc Error NT AUTHORITY\ENTERPRISE DOMAIN CONTROLLERS doesn't have Replicating Directory Changes In Filtered Set access rights for the naming context: DC=ForestDnsZones,DC=domain,DC=local Error NT AUTHORITY\ENTERPRISE DOMAIN CONTROLLERS doesn't have Replicating Directory Changes In Filtered Set access rights for the naming context: DC=DomainDnsZones,DC=domain,DC=local Starting test: Replications [Replications Check,Replications Check] Inbound replication is disabled. To correct, run "repadmin /options AD01 -DISABLE_INBOUND_REPL" [Replications Check,AD01] Outbound replication is disabled. To correct, run "repadmin /options AD01 -DISABLE_OUTBOUND_REPL" So the problem appeasr to be that when i moved the operations master, AD01 never got the memo, and now that it's started up, all the other AD servers don't think its the boss anymore when it trys to replicate etc. So i really need to manually update AD01 so that it knows who the operations master, instrastructure and PDC is - but i'm not having any luck I've been googling for nearly a day and all solutions lead to "the cake is a lie" Your ninja skills will be greatly appreciated

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  • HomeMade/DIY NAS solution

    - by MicTech
    Has anyone experience with building NAS (Network-attached storage) for home/small office using? What component would you recommend? Hardware CPU motherboard HDDs RAID controller etc. Software OS FTP HTTP etc.

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  • OSX 10.6.6 SSH md5 break-in check

    - by Alex
    Information Recently one of the linux servers that I access was compromised to steal passwords and ssh keys using a modified ssh binary. This lead me to question if the attacker had compromised my OSX Laptop which had ssh access turned on. A sophos virus scan turned up nothing, and I did not have rkhunter installed before the attack, so I could not compare hashes of the system binaries to be sure. However because OSX is relatively standard for each of their major releases, I asked fiends for md5 hashes md5 /usr/bin/ssh and md5 /usr/sbin/sshd as a basic first check to see if there was anything different about my machine. A few emails later I have found the following data: Version (Arch) [N] MD5 (/usr/bin/ssh) MD5 (/usr/sbin/sshd) OSX 10.5.8 (PPC) [3] 1e9fd483eef23464ec61c815f7984d61 9d32a36294565368728c18de466e69f1 OSX 10.5.8 (intel) [5] 1e9fd483eef23464ec61c815f7984d61 9d32a36294565368728c18de466e69f1 OSX 10.6.x (intel) [7] 591fbe723011c17b6ce41c537353b059 e781fad4fc86cf652f6df22106e0bf0e OSX 10.6.x (intel) [4] 58be068ad5e575c303ec348a1c71d48b 33dafd419194b04a558c8404b484f650 Mine 10.6.6 (intel) df344cc00a294c91230c65e8b7332a79 b5094ccf4cd074aaf573d4f5df75906a where N is the number of machines with with that MD5, and the last row is my laptop. The sample is relatively heterogeneous spaning a few years of different makes and models of Apples, and different versions of 10.6.x. The different hash for my system made me worried that these binaries might have been compromised. So I made sure that my backup for the week was good, and dived into formatting my system and reinstalling OSX. After reinstalling OSX from the manufacturer DVD, I found that the MD5 hash did not change for either ssh, or sshd. Goal Make sure that my system is does not have any malicious software. Should I be worried that this base install of OSX (with no other software installed) has been compromised? I have also updated my system to 10.6.6 and found no change as well. Other Information I am not sure if this is helpful information, but my laptop is a i7 15 inch MacBook Pro bought in Nov 2010, and here is some output from system_profiler: System Software Overview: System Version: Mac OS X 10.6.6 (10J567) Kernel Version: Darwin 10.6.0 64-bit Kernel and Extensions: No Time since boot: 1:37 Hardware: Hardware Overview: Model Name: MacBook Model Identifier: MacBook6,2 Processor Name: Intel Core i7 Processor Speed: 2.66 GHz Number Of Processors: 1 Total Number Of Cores: 2 L2 Cache (per core): 256 KB L3 Cache: 4 MB Memory: 4 GB Processor Interconnect Speed: 4.8 GT/s Boot ROM Version: MBP61.0057.B0C SMC Version (system): 1.58f16 Sudden Motion Sensor: State: Enabled On the laptop, I find: $ codesign -vvv /usr/bin/ssh /usr/bin/ssh: valid on disk /usr/bin/ssh: satisfies its Designated Requirement $ codesign -vvv /usr/sbin/sshd /usr/sbin/sshd: valid on disk /usr/sbin/sshd: satisfies its Designated Requirement $ ls -la /usr/bin/ssh -rwxr-xr-x 1 root wheel 1001520 Feb 11 2010 /usr/bin/ssh $ ls -la /usr/sbin/sshd -rwxr-xr-x 1 root wheel 1304800 Feb 11 2010 /usr/sbin/sshd $ ls -la /sbin/md5 -r-xr-xr-x 1 root wheel 65232 May 18 2009 /sbin/md5 Update So far I have not gotten an answer about this question, but if you could help by increasing the number of hashes that I can compare against, that would be great. To get hashes, and version numbers, run the following on osx: md5 /usr/bin/ssh md5 /usr/sbin/sshd ssh -V sw_vers

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  • Unable to access local network when Cisco VPN client is connected

    - by bryanroth
    I'm a developer and don't have much networking expertise, so bear with me. I'm using the Cisco VPN Client 5.0.02.0090 to connect to my work's VPN that way I can RDP into my work computer. Once connected, I can't ping anything on the local network once connected to the VPN thus I am unable to access my work's network. This used to work about two weeks ago but abruptly stopped working today. However, I have the Cisco VPN Client installed on my laptop and I am able to ping and RDP into my work computer from there. Both my desktop and laptop computers are connected to the same router at home. I have tried the following so far: Rebooted my computer Reinstalled VPN client Updated NIC drivers Disabled firewall Opened up ports 500, 4500, and 10000 Any help would be much appreciated. Thanks!

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  • Linux networking "jail" for a single process

    - by halp
    I need to tune up a networking app for network specific things like: make it use a DNS server different than the default one from /etc/resolv.conf make sure it does not try to connect to certain hosts/ports using tcp/udp connections I know I can get away with just modifying /etc/resolv.conf and writing some iptables rules, but going for a default DENY firewall policy for outgoing IP packets can trigger malfunctions in other services running on the server. I know I can set up a virtual machine with a whole OS and run my app there, but it seems a bit overkill. Is it possible to have a networking "jail" for a single app (think single Linux process) that could accept iptables-like rules for network traffic (think in terms of IP packets and above) allowed to and from this particular app? Maybe this is achievable through some dynamically loaded library that can deal with the networking layer, the same manner tsocks does, but more fine-grained?

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  • PPTP VPN on OS X and iOS failed to connect Facebook and Youtube

    - by bGiraffe
    Thnaks for reading. I setup a VPN server on my Buffalo WHR-HP-G300N router at Macau, and use it for access website over China Firewall when i travel in China. On Android and Windows, everything work fine, however on my Macbook Air and iPad, it is not working. I can access blocked site like badoo.com but not facebook and youtube. If i ping it at terminal, it said "ping: cannot resolve facebook.com: Unknown host". After i read this http://cp.hidemynet.com/knowledgebase.php?action=displayarticle&id=26, i find i can restart my router and reboot my Macbook, and connect to VPN before any request to any blocked site so that i can successfully connect to facebook and youtube. However it works sometime but not always. It is really annoying because i need to work on VPN and my Mac, would anyone can help me to solve it? Rather than restarting my router and my Mac every time. Please HELP!!! regards

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  • Can't access Linux machine from the network, network from the machine is fine

    - by Matt
    I'm having issues with a machine that stopped replicating with mysql. It's managed by a guy on another continent but recently I've had to get involved. The server is running Ubuntu server 9.10 I can't log in with SSH, there is no response. On the server itself I can ssh to localhost fine. I thought maybe it's the firewall rules. I'm no expert on IP Tables, but I believe that's not the issue as I removed all the rules. But it still won't let me in. Any ideas? it's acting from other machines as though the service isn't listening, but I know that it is. It's like this for all services.

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  • Boot disc Dual-Core CPU stress tool

    - by Ssvarc
    Looking for a tool that can test a daul-core cpu via a boot disc, thus bypassing Windows (and ensuring that only the hardware is being tested). UBCD4Win's included Prime95 is an older version and it can't run two threads at once. Ditto for UBCD. Any idea? And while I'm asking, is there a boot tool for GPU's? Thanks!

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  • Server Security

    - by mahatmanich
    I want to run my own root server (directly accessible from the web without a hardware firewall) with debian lenny, apache2, php5, mysql, postfix MTA, sftp (based on ssh) and maybe dns server. What measures/software would you recomend, and why, to secure this server down and minimalize the attack vector? Webapplications aside ... This is what I have so far: iptables (for gen. packet filtering) fail2ban (brute force attack defense) ssh (chang default, port disable root access) modsecurity - is really clumsy and a pain (any alternative here?) ?Sudo why should I use it? what is the advantage to normal user handling thinking about greensql for mysql www.greensql.net is tripwire worth looking at? snort? What am I missing? What is hot and what is not? Best practices? I like "KISS" - Keep it simple secure, I know it would be nice! Thanks in advance ...

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  • IP6tables blocks INPUT? can't connect with youtube API

    - by klaas
    I thought to have a simple ipv6 firewall, but it turned out to be hell. Somehow I really can't connect with any ipv6 from my machine unless I set INPUT Policy to ACCEPT. Below my current ip6tables ip6tables -L Chain INPUT (policy DROP) target prot opt source destination ACCEPT all anywhere anywhere state RELATED,ESTABLISHED ACCEPT ipv6-icmp anywhere anywhere ACCEPT tcp anywhere anywhere tcp dpt:http ACCEPT tcp anywhere anywhere tcp dpt:https Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination If I try to connect with any ipv6 adres it doesn't work? telnet gdata.youtube.com 80 Trying 2a00:1450:4013:c00::76... OR telnet gdata.youtube.com 443 Trying 2a00:1450:4013:c00::76... When I set: ip6tables -P INPUT ACCEPT It works.. but then.. well then everything is open? what is going on? Help?

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  • IPFW not locking people out

    - by Cole
    I've had some brute-forcing of my ssh connection recently, so I got fail2ban to hopefully prevent that. I set it up, and started testing it out by giving wrong passwords on my computer. (I have physical access to the server if I need to unblock myself) However, it never stops me from entering passwords. I see in /var/log/fail2ban.log that fail2ban kicked in and banned me, and there's a ipfw entry for my IP, but I'm not locked out. I've changed the configuration around, and then tried just using the ipfw command myself, but nothing seems to lock me out. I've tried the following blocks: 65300 deny tcp from 10.0.1.30 to any in 65400 deny ip from 10.0.1.30 to any 65500 deny tcp from 10.0.1.30 to any My firewall setup has a "allow ip from any to any" rule after these though, maybe that's the problem? I'm using Mac OS 10.6 (stock ipfw, it doesn't seem to have a --version flag) Thanks in advance.

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