You could still use NFS as read only, but have a special apache server to handle all filesystem writes that mounts the SAN as iSCSI or some other read-write mechanism. Presumably your main application activity is reading, with writing happening infrequently (by comparison) so having only a...
Oh yeah, and I second the "move the software volume to any other controller". It can be a pain to have an expensive hardware RAID card go sideways, then have to wait for a replacement.
Growing RAID is a pain in the ass either way.
Hardware RAID, you generally need to grow from the card's BIOS and it can take hours (sometimes many hours if you have many disks) to grow a RAID 5, so that can be quite a bit of downtime, and if there is a fault while growing the RAID5, well...
I might recommend anything you can flash with dd-wrt (check their web page) if you feel up to it. If not, they're kinda a horse-a-piece unless you want to plunk down bling for a cisco 851w or 871w. But if you are comfortable configuring one of those, you should also be comfortable with a...
Me too man (scratch the lightning storm though, my still chugs along). I keep thinking about replacing it with a dd-wrt router, but can never think of a good reason as I am the only user in my residence and I can just turn bittorrent off whenever I have QoS issues.
Company I used to work for...
A Linksys WRT-54GL can do the same dd-wrt + wondershaper QoS that a Buffalo could before they were banned. Make sure it is a WRT-54G*L*, not just a standard WRT-54G.
Perhaps your OpenVPN server is not pushing a route out to your OpenVPN client? If you post your configs for your server and client, along with IP ranges for your already included diagram, perhaps I can help :).
I guess it could be more an issue with opening so many connections at once, so it wouldn't matter if it was hosts or ports. The thing I had read about scanning >4000 IPs was specific to [ar]pinging netblocks to see if they responded, not full scans. What is the exact command you are running...
I believe nmap can sometimes open too many connections for your machine to handle. For instance, if you scan large netblocks, say >4000 IP addresses, it will choke. I haven't been able to dig up any evidence of this on a ports basis. What happens if you scan 8000-50000, and run another...
It depends how extreme you want to get, but this guy has a good tutorial on setting up OpenVPN, which will work for what you want to do but will require you to setup a junker pc with linux and use it as your router on your network:
http://judebert.com/wasted_youth/permalink/GameVPN.html
To be honest, almost anything will do. PCI NICs are pretty much commodity these days. Of course the gold standard is still Intel, and Gigabit Intel NICs are pretty cheap (circa $30 for a PWLA8391GT):
http://www.newegg.com/Product/...x?Item=N82E16833106121
That said, a router running ipcop or smoothwall may work better than a garbage linksys router handling 15pcs of traffic. Linksys-type routers lock up sometimes when you run a lot of bittorrent connections through them, for example.
The client utility is likely available from the computer/card manufacturer (e.g. Dell). If it is intel wireless, then there is also an Intel driver package/set that comes with the utility. If you posted the name of the card, we could help you find a driver if you are having trouble, though...
pfsense can definitely do this. So can linux with iptables or ebtables + munin with the proper setup.
The method I know best is iptables so I will describe a quick-and-dirty solution with some detail.
First, a few assumptions and tell me if they are wrong:
Your current router is...
If you read lightreading.com there is some buzz around XKL. I would get them to give you contact info for customers and a demo if you are seriously interested.
If you have linux on any of these boxes or are comfortable using live-cds, you could use iperf to measure actual performance of your setup. If iperf is able to get up towards 1Gbps, then it all comes down to your OS, your disks, and just general inefficiencies.
I have a 11-disk RAID5 in a...
This is pretty easy with most firewalls. You setup a demilitarized zone or DMZ.
-Get multiple IPs from your ISP (a /26 is 64 (62 usable) or a /28 is 16 (14 usable)).
-With IPCop it seems you can have your firewall setup all these IPs as aliases on the red interface and the port forward...
I am familiar with how to setup per-port DHCP rate limits for a Cisco switch, et.g. something like:
ip dhcp snooping limit rate 5
But is there any way to do the same thing on a Cisco 4404 WLC? I seem to have a problem with some jerk who wants a lot of DHCP addresses on my wireless LAN...
pure-ftpd is easy to use and setup, and can plug into multiple authentication back ends. There is a great tutorial:
debian-administration.org Pure-FTPd Article
Intel ++. I have and use one of the blue metal netgear switches, I think it is a GS105 (not at home right now). I have a windows box with Raid0 2x7200RPM single platter disks and a linux server with a large RAID5. I can reliably push 250Mbps across this for non-sequential reads from Windows...
Of course you could also put a dual wan router across T1 and WISP... If you were to do so I'd recommend having all your VPN users come over the T1 and your office users over the WISP and fail into the T1 if the WISP is down or being crappy.
It won't "bond" the traffic like a bonded T1 will, but it should load balance across the links. In other words, you'll never get the aggregate bandwidth out of the pair of the connections, but with multiple users you will be able to sustain a total load spread across both links.
To be honest it depends on interference on the wifi channel your router is set to, distance, quality of your wireless network card and its drivers, is your wifi nic 802.11g or 802.11b?
Try running it plugged in to the router as opposed to using wireless. Try changing the channel on your wifi...
Is your net connection setup using PPPoE on the router? If it is, PPPoE may be disconnecting, and not re-initializing until a client uses the computer.
You could always see if you can ping the external IP of the router to check that.
Also you could always setup a program on Windows to...
I have an older v1 BEFSR41 that can handle 15Mbps of bittorrent downstream and upstream (yay for working for an ISP part time), but newer revisions seem to be pretty crappy. I would also recommend seeking a newer router perhaps.
ADSL2+ is a standard, as is DOCSIS 1.0/1.1. No matter who you buy a cable modem or dsl modem from, it will hew pretty close to these standards. Information about their modulation types, bit rates achievable and distance limitations on them, etc. can all be found on Wikipedia...
I have personally had some quality issues with Linksys lately and have to second the Buffalo WHR-HP-G54, or the WHR-G125. Both of which can be flashed to dd-wrt and have various "wondershaper" scripts setup. Check out www.dd-wrt.com - it's pretty easy and you'll learn some neat stuff too.
DD would've copied the entire disk. If you had, for instance, booted from a linux bootable cd (say Ubuntu), you could
#dd if=/dev/hda of=/path/to/network/share/image_name
or
#dd if=/dev/hda of=/path/to/usb/disk
and then re-dd that out to another disk. It'll grab the mbr and everything.
If you have a friend who lives nearby who also uses cable Internet, ask if they have similar problems. If they live real close, say a few doors down or in the same apartment building, they will likely be on the same "node" as you and that can isolate a "node" problem. If they don't, ask if you...
It should work without a router. Unless the DSL service uses PPPoE - which I believe ATT services still use in some areas (for instance, old Ameritech territories). What DSL provider is your friend using? If it requires PPPoE, your friend may need to get a router or upgrade.
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You...
YEah upping blocksize on DD really helps a lot. Cuts literally hours out of drive copying if you have a drive of any size. I have usually used:
#dd bs=32678 if=/dev/hda of=/dev/hdb
or similar
I'm going to go out on a limb here and say that if you could reprogram a WRT-54G or Buffalo router with OpenWRT or DD-WRT they could both, with some linux command line voodoo, be programmed to use LEAP authentication and bridge the connection between the wifi and the ethernet ports on the...
Not to be a**, but a 25' patch cord, while less elegant than wifi, is probably cheaper than 802.11a or some sort of directional 802.11b/g setup. Lower latency, less jitter, fewer drops, better multi-user service and higher bandwidth to boot!
So I have made some pcap/wireshark logs, just goofing around/experimenting, and I am looking for an app that will reconstruct http file transfers, e.g. the html and jpeg/gif/whatever. I had seen a few tutorials suggesting that wireshark can do this, but unlike the tutorial I found, when I tried...
Why don't you share the file via windows file sharing and use daemon tools to mount it on your laptop directly? I have done this before with no issues. If i had to guess it might be that something about sharing a virtual cd rom drive is quirky in windows.
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