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  • Self-powered USB hub and power supply adapter ampere capacity

    - by galacticninja
    I am looking for a power supply adapter for my USB Hub so it can support at least 2 bus-powered external hard drives. The hub's rating is 5 volts, 2 amperes. I would like to know if it would be OK to buy a power supply adapter rated at less than 2A. I've been looking for power supply adapters and the ones that do support 2A are more expensive (more expensive than the USB hub itself) compared to those that support less than 2A. Will power supply adapter that supports less than 2A (~1-1.5A) work fine to support two external hard drives? The external hard drives are both bus-powered Western Digital My Passport Essentials 250 GB. The OS is Windows XP SP3.

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  • USB to LPT adapter?

    - by Dave
    I'm bummed out, pretty much all of our computers here lack parallel ports. I have an EETools ChipMax programming tool that has one of the old-school Centronics connectors on the back. I figured that someone must make a USB to LPT adapter. Sure enough, I found one from iogear, the GUC1284B that is a USB to Parallel Printer cable. Note the boldface on the Printer. It must connect to a printer -- it isn't some generic USB to parallel interface, unfortunately. Does anyone here know of an adapter that works for parallel devices that aren't printers? I'd hate to have to buy a USB version of the ChipMax when I don't need to use it very much.

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  • Restrict VPN user to Remote Desktop only with Sonicwall

    - by Matt
    Basically I want him to only be able to log onto the VPN in order to use Remote Desktop to use HIS machine. Not surf the internet or do anything like that, but just use the programs on his machine that he doesn't have at home. We use a Sonicwall NSA 220 with their regular VPN client. I can create a user for him, but when I create an access rule it applies to all VPN users. How can I make something like that only apply to ONE user?

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  • Does the nginx “upstream” directive have a port setting?

    - by user55467
    moved from:http://stackoverflow.com/questions/3748517/does-nginx-upstream-has-a-port-setting I use upstream and proxy for load balancing. The directive proxy_pass http://upstream_name uses the default port, which is 80. However, if the upstream server does not listen on this port, then the request fails. How do I specify an alternate port? my configuration: http{ #... upstream myups{ server 192.168.1.100:6666; server 192.168.1.101:9999; } #.... server{ listen 81; #..... location ~ /myapp { proxy_pass http://myups:81/; } } nginx -t: [warn]: upstream "myups" may not have port 81 in /opt/nginx/conf/nginx.conf:78.

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  • SAN newbie: What kind of fiber cables do I need to connect to the front end ports on my EMC CX300

    - by red888
    I have an old CX300 I'm messing with and I cant determine what kind of HBA\fiber cables I need to connect a server to the front end ports on the DPE2. The hardware reference doesn't give me any details and being new to FC-SAN all of the options are pretty overwhelming. I don't know if the ports are SC or LC or if it requires singlemode or multimode. Googling hasn't turned up anything for me either. All I know is that it supports 2GB Fiber. Here is a pic of one the modules. You can clearly see the front-end ports (FE)

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  • What would multiple serial ports be used for?

    - by jasondavis
    I saw someone was using something like the card in the link below on there system for some networking gear on their pc. I am very curious what a person would need 8 serial ports for. What kind of stuff uses this? http://www.newegg.com/Product/Product.aspx?Item=N82E16815124041&cm_re=serial_card--15-124-041--Product

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  • Merit and demerits for various Linux fiberchannel multipath options

    - by wzzrd
    On our Linux servers, we currently use HPs qla2xxx drivers, because it has multipathing (active/passive) built in. The are, however, various other options, like Red Hats device-mapper-multipath with the stock qla2xxx drivers (multibus and failover) and things like SecurePath and PowerPath (both of which can do trunking, iirc). Can someone tell me what the merits and demerits of the various options are (if I can ask such a question), besides the obvious fact that the {Secure,Power}Path options cost vast amounts of money? I'm mainly interested in the freely available options, like HPs qla2xxx vs. Red Hats multipathd and possible other open source solutions, but I would like to hear good reasons to go for the commercial solutions too. UPDATE: I'll be benchmarking various options the coming few days (the average of 10 runs of iozone for each option (options being native qla2xxx failver, native qla2xxx multibus, HP qla2xxx failover)). I'll post a summary of results here for those interested.

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  • My datacard goes online but doesn't gives internet access (Fedora 14).

    - by Harsh
    I am using MTS datacard. I have usb_modeswitch installed and have configured the wvdial.conf file. When I do sudo wvdial cdma, the IPs and DNS addresses are also allocated but I still cant access internet. The reply to dmesg | grep -e 'tty' -e 'modem' is: [ 0.000000] console [tty0] enabled [ 11.098238] USB Serial support registered for GSM modem (1-port) [ 11.098352] option 6-1:1.0: GSM modem (1-port) converter detected [ 11.102170] usb 6-1: GSM modem (1-port) converter now attached to ttyUSB0 [ 11.102207] option 6-1:1.1: GSM modem (1-port) converter detected [ 11.102334] usb 6-1: GSM modem (1-port) converter now attached to ttyUSB1 [ 11.102364] option 6-1:1.2: GSM modem (1-port) converter detected [ 11.102488] usb 6-1: GSM modem (1-port) converter now attached to ttyUSB2 [ 11.102522] option 6-1:1.3: GSM modem (1-port) converter detected [ 11.102643] usb 6-1: GSM modem (1-port) converter now attached to ttyUSB3 [ 11.102672] option 6-1:1.4: GSM modem (1-port) converter detected [ 11.102793] usb 6-1: GSM modem (1-port) converter now attached to ttyUSB4 [ 11.103074] option: v0.7.2:USB Driver for GSM modems Can anyone tell me what shall I do?

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  • http, https and ftp is not working but smtp and imap is working

    - by Unicron
    hi all, yesterday on a computer of a friend a strange thing happened. after booting the ports fo http, https and ftp are closed but e-mail is still working. in the control panel the windows firewall seems active even if he tries to deactivate it. i have a suspision that it is the faul of norton internet security 2010, we have tried to uninstall it, but the uninstallation did not work. when using the removal tool from symantec it just goes to 23% and then it crashes. the process ccSvcHst.exe is still running. how can i safeley remove the rest of norton internet security? thanks in advance [edit] norton internet security 2010 is sucesfully removed, but still no connectivity

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  • Does stunnel prevent non ssl traffic to "the" specified port?

    - by user432024
    So say I have an arbitrary tcp port 12345 and it's non ssl and I want to put stunnel to secure traffic to it. When stunnel is in front of it does it mean that this port is now tls/ssl only? Or can you still connect to it unencrypted? Basically I want to make sure that this port can only be accessed through ssl/tls and stunel and no other way. Clarification I want to make sure only stunnel port is open. Which is answered in the comments that the unsecured port should be fire-walled but preferably bound to localhost.

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  • Fiber in Cable Management Arm

    - by mrtroy
    I'm aware of the existing debate on cable management arms. For those people who DO use cable management arms, do you put Fiber into the arms? It looks like I'm fine on minimum bend radii, but am looking for additional opinions before I do anything. -Troy

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  • (Free) SSH tunneling to S60?

    - by Jawa
    What solutions are there to SSH tunneling certain ports on a Symbian S60 mobile phone? My goal is to rsync files to/from the phone but the only S60 SSH forwarding software that I know is pretty old and most importantly not free. (sshforwarding.com)

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  • Diagnosing SAN connectivity issues (RHEL5)

    - by Matthew
    We are currently utilizing GFS2 to share a SAN LUN between 3 servers. However due to a feature problem with vendor software we are using, we currently have the volume unmounted on two of the boxes, and are instead exporting the GFS2 filesystem via NFS from the first one (the software requires some weird locking mechanics that GFS2 doesn't support). As of this morning, NFS was no longer able to read/write to the volume from any of the servers, including the NFS server. I then tried checking the normal mount (the directory that is exported on the NFS server) and I received a weird input/output error just trying to CD into it. When I tried running multipath, I got a DM error, however multipath -l worked just fine. I tried unmounting the GFS2 volume, and the CLI hung. I ran init 0 which killed most services, but then the shutdown appeared to have been hung. I logged in via out of band access (hp ILO) and saw that the shutdown was hung trying to unmount GFS2 volumes. My main priority was getting the box back online so after about 5 minutes of waiting I did a hard reset. I am now trying to figure out what went wrong. What are the correct logs to investigate? I've never run into SAN issues like this before. The SAN is connected via 2 fibre connections. Any help would really be appreciated. Everything appears to be up and functional now.

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  • How can I specify nameserver's port number in osx? [duplicate]

    - by Cofyc
    This question already has an answer here: How is DNS lookup configured for OSX Mountain Lion? 2 answers In resolver manual, it said: The address may optionally have a trailing dot followed by a port number. For example, 10.0.0.17.55 specifies that the nameserver at 10.0.0.17 uses port 55. But it doesn't work, in /etc/resolv.conf or files under /etc/resolver/. 208.67.222.222.5353 Can I specify non-default port number for nameserver in osx? Update: osx don't use /etc/resolve.conf, but use files under /etc/resolver/. I have wrote a file dev with content '127.0.0.1' to route all dns queries for *.dev domains to a local dns server (127.0.0.). But I cannot specify dns server's port here. (It uses 53 anyway) Maybe there is no way to specify port number under osx?

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  • SAN cache memory upgrade

    - by Scott Lundberg
    We currently have an IBM DS4300 Dual Controller Fibre SAN. It is a good box, but getting pretty old. It came with 256MB of cache per controller. Recently we replaced the batteries in one of the controllers and noticed that the cache is a DDR PC2100 ECC DIMM. Of course, we are thinking about how cheap this RAM is now and is there any good reason we can't upgrade the RAM. IBM used to have a "Turbo" upgrade to this box that doubled the cache and had a bunch of software features for about 10K USD. Since that product has been end-of-lifed, I don't think we can get that upgrade and we don't need the software upgrades (FlashCopy, StorageCopy, etc). Besides the obvious potential warranty issue, what if any issues would we expect to see if attempting to put 2 - 1GB DIMMS in this unit? Any other things I am missing here? EDIT: Memory label: Samsung CN 0433 PC2100U-25331-A1 M381L3223ETM-CB0 256MB DDR PC2100 CL2.5 ECC

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  • iptables forward rule not working in openwrt

    - by Udit Gupta
    I am trying to apply some iptables forwarding rules in openwrt. Here is my scenario - My server has two cards ath0 and br-lan. br-lan is connected to internet and ath0 to private network. The other m/c in n/w also has ath0 that connects with this server's ath0 and they are able to ping each other. Now, I want other m/c in network to use internet using br-lan of server so I thought of using iptables forwarding rule- Here is what I tried - Server : $ ping 1.1.1.6 // <ath0-ip of client> works fine $ iptables -A FORWARD -i ath0 -o br-lan -j ACCEPT $ /etc/init.d/firewall restart Client : $ ping 1.1.1.5 // <ath0-ip of server> works fine $ ping 132.245.244.60 // <br-lan ip of server> (not working) I am new to iptables stuff and openwrt. What I am doing wrong here ?? Any other help if anyone could suggest for my scenario Edit- m/c - machine n/w - network

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  • Can I run a web site from my home network without jeapordizing other computers on my LAN?

    - by Alchemical
    I have a home LAN with 5 computers and a NAS, all connected to a Linksys router which is connected to my Cox cable modem. I'm interested in having one of my computers run an IIS-based web site and to have it be accessible to the internet with a static IP. However, I do not want o jeapordize the safety of the other computers on my home network! Is there anyway to do this safely, or as safe as possible? I may also like to run an FTP server from this computer. Finally, optionally I would like to allow remote access to this computer from the internet--but it seems to me that that may increase the security risk to the other computers substantially.

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  • Determining Serial Driver Supported Baud Rates

    - by Jim Fell
    Hello. How can I determine the baud rates supported by my serial driver? My driver details (from the Device Manager) follow, but they do not seem very helpful. I am writing an application that is crashing because I am apparently attempting to to set COM1 to an unsupported baud rate, so I need to know which baud rates the driver does support. Any suggestions would be appreciated. Thanks. Driver files: C:\Windows\system32\drivers\serenum.sys C:\Windows\system32\drivers\serial.sys Provider: Microsoft Corporation File Version: 5.1.2600.5512 (xpsp.080413-2108)

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  • Access internal host from a subdomain of an external dns

    - by Mihai
    This image contains the topology I want to make work. I have a linux server that is used for hosting websites and also routing for our internal network. How can I access the internal server that hosts the team foundation server from outside from a domain like teamfoundation.example.com. The parent domain is hosted on the linux machine, is there a way to NAT the dns queries to the windows server? |LINUX SERVER| example.com | | Windows Server(teamfoundation.example.com) _______|_________SWITCH Internal Network

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  • Configure LAN Router To Prevent Illegal Torrenting?!

    - by Goober
    Scenario I have a typical broadband setup at home (It's a flatshare I have no control over who uses the house) and I want to prevent anyone using it from illegally downloading via torrents etc. Question Is there a way in which I can configure the router to block all forms of illegal downloads?

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  • Acces internal host from a subdomain of an external dns

    - by Mihai
    Hy to all this image contains the topology i want to make it work. I have a linux server that is used for hosting websites and also routing for our internal network. How can i acces the internal server that hosts the team foundation server from outside, from a domain like teamfoundation.example.com. The parent domain is hosted on the linux machine, is there anyway to NAT the dns queries to the windows server? |LINUX SERVER| example.com | | Windows Server(teamfoundation.example.com) _|___SWITCH Internal Network

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  • Terminal command to send data (plain text string) to a port at a remote computer.

    - by Eddy
    I am trying to send data (plain text string) to a port at a remote computer using terminal utility. The string would be used to trigger something on the remote computer running a program that would listen to that specific port. I used netcat command and tried a few combination of the following but can't seem to get the parameter right. Can someone point me out where am I doing wrong? eddy-2:Desktop eddy$ nc IPADDRESS PORT woc.txt eddy-2:Desktop eddy$ nc IPADDRESS PORT < woc.txt P.S: woc.txt contains plain text string of the said command. Edit: I am trying to send a string from OSX to Windows XP where the specific port is open by default.

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