followup on m0n0wall

2006-02-09 Thread Bill McGonigle
This is a followup on the MonadLUG meeting a few months back on open 
source firewalls.  I was particularly impressed with m0n0wall from the 
talk and have installed it at a small office and it works great.  They 
have an XML config file, boot from CD (config on floppy/flash) and a 
very nice GUI.  It's working great at that location and the client 
loves everything about it.  Cisco should be this good.


So, I was all psyched to use it for a larger client installation and I 
hit a major snag, which is a FreeBSD limitation.  This client has their 
DMZ IP's bridged to the WAN connection, so their servers have real IP 
addresses, not NAT'ed addresses.  This is for historical reasons but 
it's so ingrained that short of their ISP and its netblocks going poof, 
it's never going to change, and would require hundreds of man-hours to 
change.  They ought to, but it won't happen.


But m0n0wall can do bridging...

So, they also have a LAN which is NAT'ed.  They have a few hundred 
devices on their 10. network there which ride a NAT'ed address out to 
the Internet.  And m0n0wall can do that.


Here's where you get the gotcha - under BSD due to the way the bridge 
device and the ipnat device work, you can't talk from a NAT'ed device 
on one interface to a bridged device on another.  Packets go out but 
don't know how to get back.  The BSD network gurus have looked at it, 
said, 'dang, that should be possible,' but have decided it would be way 
too hard to get working.


So, for this client I'll be using a linux-based firewall, probably 
IPCop, which I don't believe (but need to prove to myself in the lab) 
has this problem.


-Bill
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Help build the new GNHLUG Internet server

2006-02-09 Thread Ben Scott
Hello GNHLUG!

  A project has been started to enhance GNHLUG's Internet presence.
The initial focus of this project will be to configure and deploy a
new server. The plan is the server will eventually host the GNHLUG web
and mailing list servers, as well as be home to future GNHLUG ideas.

  To make this happen, we need help! We need people who have
experience with Linux/Unix system administration. This is more than
just a need for manpower. We want to make this project a group effort,
with the explicit goal of making this a case study in "How to do Linux
right". So if you've got good *nix system administration experience,
or even just know a few things that might help, please consider
joining our effort!

  Initially, things we will be using include: SSH, Apache, Sendmail,
TWiki, GNU Mailman.

  In the future, we may also use: Postfix, PHP, Python, Zope, Plone,
*SQL, and whatever else brings something useful to the table.

  If you think you might be interested in joining, visit:

http://wiki.gnhlug.org/twiki2/bin/view/Organizational/ServerPeople

Thanks!

-- Ben Scott, GNHLUG Server Project Coordinator
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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Ben Scott
On 2/9/06, John Abreau <[EMAIL PROTECTED]> wrote:
> However, OpenVPN itself works fine on Windows. The TUN driver doesn't
> work on Windows, so you need to use the TAP driver instead.

  I'm using the TUN driver on Win32 with OpenVPN 2.0.5 without any
trouble (that I know of).

-- Ben "Fairly new to OpenVPN" Scott
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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread John Abreau

Thomas Charron wrote:

  Hehe, no, I went looking at it doesn't look like there is any Win32 
solution that's compatible with OpenSSH VPN tunneling.  It was more a 
curiosity sake on my side.  Most of the time we're out of the office 
(away from home), we're on laptops running Win32.  I know, I know, but 
it can't be helped..
 
  Thomas




Oops, I didn't notice you were referring to OpenSSH instead of OpenVPN. 
Ignore my previous message.


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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread John Abreau

Thomas Charron wrote:

 
  Hehe, no, I went looking at it doesn't look like there is any Win32 
solution that's compatible with OpenSSH VPN tunneling.  It was more a 
curiosity sake on my side.  Most of the time we're out of the office 
(away from home), we're on laptops running Win32.  I know, I know, but 
it can't be helped..
 
  Thomas


If you're looking for something other than OpenVPN to run on a Windows 
client that will be compatible with OpenVPN on the server end, then yes, 
you're out of luck.


However, OpenVPN itself works fine on Windows. The TUN driver doesn't 
work on Windows, so you need to use the TAP driver instead.


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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Thomas Charron
On 2/9/06, Bill McGonigle <[EMAIL PROTECTED]> wrote:
On Feb 9, 2006, at 15:56, Thomas Charron wrote:>   Aye, I've used it before.Cool - any gotchas?  As it's only been out a week I haven't had the
pleasure yet - thomas.geekpoints++ .
 
  It works well, but it can be tricky to set up.  Basically, it uses a virtual network card.  In reality, it's not ALL that different from tunneling a PPP connection over an existing port.
> But does it do Windows?  ;-)I'm sorry, I thought I was on a different mailing list. :)  If that is
one of Mark's requirements he didn't mention it.  I hope we don't haveto _assume_ Windows now.
 
  Hehe, no, I went looking at it doesn't look like there is any Win32 solution that's compatible with OpenSSH VPN tunneling.  It was more a curiosity sake on my side.  Most of the time we're out of the office (away from home), we're on laptops running Win32.  I know, I know, but it can't be helped..

 
  Thomas 


Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Mark Komarinski
On Thu, Feb 09, 2006 at 04:26:19PM -0500, Bill McGonigle wrote:
> On Feb 9, 2006, at 15:56, Thomas Charron wrote:
> 
> >  Aye, I've used it before.
> 
> Cool - any gotchas?  As it's only been out a week I haven't had the 
> pleasure yet - thomas.geekpoints++ .
> 
> >But does it do Windows?  ;-)
> 
> I'm sorry, I thought I was on a different mailing list. :)  If that is 
> one of Mark's requirements he didn't mention it.  I hope we don't have 
> to _assume_ Windows now.

Pfft.  Windows is in a VMWare slice or on my gaming machine at home.
Then again, maybe cygwin's openssh would do it.

Nice that OpenSSH supports VPNs, but I don't really feel like
recompiling that for all my machines (or building packages for them).

I'll look more into the routing and see what I can come up with.

-Mark


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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Bill McGonigle

On Feb 9, 2006, at 15:56, Thomas Charron wrote:


  Aye, I've used it before.


Cool - any gotchas?  As it's only been out a week I haven't had the 
pleasure yet - thomas.geekpoints++ .



But does it do Windows?  ;-)


I'm sorry, I thought I was on a different mailing list. :)  If that is 
one of Mark's requirements he didn't mention it.  I hope we don't have 
to _assume_ Windows now.


-Bill

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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Thomas Charron
On 2/9/06, Bill McGonigle <[EMAIL PROTECTED]> wrote:
On Feb 9, 2006, at 10:39, Thomas Charron wrote:> Currently, at the house we have no VPN> capabilities beyond SSH tunneling, but a definate goal is to provide
> full> fledged VPN connectivity.Also note the current release of OpenSSH provides layer2/3 vpnfunctionality.  I haven't set it up yet.  There's a README.tun in thedistribution.
 
  Aye, I've used it before.  But does it do Windows?  ;-)
 
  Thomas 


Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Bill McGonigle

On Feb 9, 2006, at 11:10, Ben Scott wrote:


  Unfortunately, that's not really much help.  First of all, clock
rates are a really poor way to compare CPUs of different
architectures.


If you have straight integer code (Rijndael is all table lookups, 
shifts, and XOR's) and the CPU's are of similar architectures 
(scalar-type, bits, dispatch types), in the same price category 
(affects caches and such) typically clock speed is proportional to 
performance, well within an order of magnitude, despite the flavor of 
instructions.  In the case of MIPS32 (WRT54G) and StrongARM (Sonicwall) 
Rijndael runs in 730 and 690 clocks respectively, so pretty close.  Of 
course, a Cell processor will do it in under a hundred, so it's all a 
matter of context.



More importantly, a lot of VPN appliances use ASICs
that off-load the crypto from the CPU.  The WRT54G has no such
accelerator.  So you're comparing apples to orange juice.  :)


You're right - the Sonicwall does have a VPN ASIC to offload VPN 
processing, so it's at least apples to Sunny Delight, maybe 
artificially-flavored orange Pez.


-Bill
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Re: IT Documentation Engine for Non-Geeks?

2006-02-09 Thread Ben Scott
On 2/9/06, Christopher Schmidt <[EMAIL PROTECTED]> wrote:
> Basic Auth can't be saved by my browser, so I lose my credentials and am
> too lazy to look them up, so I can no longer edit the Wiki.

  Which Wiki?  The GNHLUG site?  There's password reset info on the
site.  Or just create a new account like everyone else does.  ;-)

  Short version of password reset:

1. Go here and fill out the form:

http://wiki.gnhlug.org/twiki2/bin/view/TWiki/ResetPassword

2. Mail the result to me.  :)

-- Ben
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Re: IT Documentation Engine for Non-Geeks?

2006-02-09 Thread Lawrence Tilly
I use TWiki for some small-team collaboration and it is serving us
fantasticly.  Dragon skin is pretty minimal and the skins are easily
customized.

You may also want to check XWiki.  It's a Java-based solution
developed by someone that used to be a TWiki fan.  Very active mailing
list and is pretty stable ( even though they call it pre-release still
).  My only reason for not jumping on it is there is no easy way to
convert all my data from TWiki to XWiki so until I have Free Time...  
 :-/

-Lawrence
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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Ben Scott
On 2/9/06, Bill McGonigle <[EMAIL PROTECTED]> wrote:
> Also note the current release of OpenSSH provides layer2/3 vpn
> functionality.

  Interesting.  A quick check shows that it's still TCP based. 
Running a layer 3 tunnel over TCP tends to suck a lot in a number of
situations (lots of UDP; packet loss; high latency).

  I've just been putting OpenVPN into production deployment myself. 
In general, I find it works impressively well.  I guess the X.509
certificate setup confuses a lot of people, but I already know far too
much about that (thanks to IPsec), so that didn't faze me.  I'm still
seeing some issues with path-MTU-discovery brain-damage on the
Internet in general, but that's a universal problem.

-- Ben
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Re: IT Documentation Engine for Non-Geeks?

2006-02-09 Thread Christopher Schmidt
On Thu, Feb 09, 2006 at 11:09:21AM -0500, Larry Cook wrote:
> Bill,
> 
> >As much as I like the GNHLUG Twiki, that's not it, it scares people from
> >_this_ group away.
> 
> I'm curious, what about it scares people.  Is it just the text formatting 
> syntax?  TWiki 4.0 now includes a beta version of a WYSIWYG editor.

Basic Auth can't be saved by my browser, so I lose my credentials and am
too lazy to look them up, so I can no longer edit the Wiki.

-- 
Christopher Schmidt
Web Developer
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Re: IT Documentation Engine for Non-Geeks?

2006-02-09 Thread Ben Scott
On 2/9/06, Bill McGonigle <[EMAIL PROTECTED]> wrote:
> I'm leaning towards a Wiki but would welcome other suggestions.

  Check out the Plone server SLUG has running their site
(http://slug.gnhlug.org).  It's very GUI for a web app, and it's
ownership-orientated approach well likely work well in a business
environment.  Try the nifty AJAX search box and WYSIWYG HTML editor. 
:)

> As much as I like the GNHLUG Twiki, that's not it, it scares people
> from _this_ group away.

  As I've said before, I really feel that the GNHLUG website's
problems stem not from TWiki, but from bad design on the part of the
people running the site (and I include myself foremost in that group).

  That being said, I do find the default TWiki skin "too busy", but
it's easy to create a more minimalist skin.

  As a user, I've grown found of MediaWiki (Wikipedia) .  I like a
number of things about the web UI and the wiki syntax dialect. 
However, I believe it is limited in terms of access control and
"plug-in" type extensions, which make it less suitable for a business.

-- Ben
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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Bill McGonigle

On Feb 9, 2006, at 10:39, Thomas Charron wrote:


Currently, at the house we have no VPN
capabilities beyond SSH tunneling, but a definate goal is to provide 
full

fledged VPN connectivity.


Also note the current release of OpenSSH provides layer2/3 vpn 
functionality.  I haven't set it up yet.  There's a README.tun in the 
distribution.


-Bill

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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Ben Scott
On 2/9/06, Bill McGonigle <[EMAIL PROTECTED]> wrote:
>> However, crypto is resource intensive -- especially CPU intensive.
>> The WRT54G is a fairly bitty box; trying to use it for that may drag
>> down performance on everything.
>
> Just for a frame of reference, the WRT54G has a 216MHz MIPS CPU, and
> the SonicWall Pro's I've worked with have a 233MHz StrongARM.

  Unfortunately, that's not really much help.  First of all, clock
rates are a really poor way to compare CPUs of different
architectures.  More importantly, a lot of VPN appliances use ASICs
that off-load the crypto from the CPU.  The WRT54G has no such
accelerator.  So you're comparing apples to orange juice.  :)

> Speaking of which, only the 3rd party firmwares seem to use this CPU
> properly.

  Now that's interesting.  I'll have to give the 3rd party firmware a
try.  I haven't bothered with my WRT54G because I haven't percieved a
need yet.  Sounds like I would get some benefit after all.  I wonder
what the differences are to cause such a result.

-- Ben
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Re: IT Documentation Engine for Non-Geeks?

2006-02-09 Thread Larry Cook

Bill,


As much as I like the GNHLUG Twiki, that's not it, it scares people from
_this_ group away.


I'm curious, what about it scares people.  Is it just the text formatting 
syntax?  TWiki 4.0 now includes a beta version of a WYSIWYG editor.


Larry


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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Thomas Charron
On 2/8/06, Mark Komarinski <[EMAIL PROTECTED]> wrote:
All the examples for OpenVPN that I've seen assume that the OpenVPNserver is on both the public and private network.  That's not what I'm
doing as my OpenVPN server is sitting behind my NAT box and has only oneinterface - that on the private network already.(client) <-> (Internet) <-> (NAT box) <-> (OpenVPN server)Anyone doing this, or am I just missing the concepts here?

 
  This really interests me personally, as I would really like to implement this sort of setup as well.  Currently, at the house we have no VPN capabilities beyond SSH tunneling, but a definate goal is to provide full fledged VPN connectivity.

 
  Thomas 


IT Documentation Engine for Non-Geeks?

2006-02-09 Thread Bill McGonigle
Does anyone have recommendations for documentation engines for 
non-geeks to track IT stuff?  For example, Bob, Mary and Joe in 
Marketing use the shared IMAP account 'marketing' to handle e-mails.  
There needs to be a place that those three folks can go look up what 
the password is for the account, but have it access controlled.  They 
should be able to create this bit of information themselves.


It doesn't need to be highly structured like IRM, and RT isn't the 
right tool in this case.  Bugzilla is right out.


I'm leaning towards a Wiki but would welcome other suggestions.  If a 
Wiki is the right tool - does anyone have a feel for which Wiki 
[syntax,structure] is easiest for the average user to learn?  As much 
as I like the GNHLUG Twiki, that's not it, it scares people from _this_ 
group away.  Kwiki has worked well for me in the past but I'm open to 
other suggestions.


Thanks,
-Bill

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Re: Notebook Network Issues

2006-02-09 Thread Bill McGonigle

On Feb 9, 2006, at 09:55, Thomas M. Albright wrote:


/etc/modprobe.conf says:
  alias eth0 tulip
but trying 'insmod eth0' returns
  insmod: can't read 'eth0': no such file or directory
and trying 'insmod tulip' returns
  insmod: can't read 'tulip': no such file or directory


I think depmod can help here.  I had a similar issue on a FC3->FC4 
upgrade:


  sudo depmod -ae -F /boot/System.map-[your `uname -a` kernel version 
here]


seemed to do it.

-Bill
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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Bill McGonigle

On Feb 9, 2006, at 09:38, Ben Scott wrote:


However, crypto is resource
intensive -- especially CPU intensive.  The WRT54G is a fairly bitty
box; trying to use it for that may drag down performance on
everything.


Just for a frame of reference, the WRT54G has a 216MHz MIPS CPU, and 
the SonicWall Pro's I've worked with have a 233MHz StrongARM.  In no 
way take that as any kind of recommendation for a SonicWall Pro, but 
they can handle several concurrent VPN sessions.  Mix in key size, 
cipher, number of users, and stir.


Speaking of which, only the 3rd party firmwares seem to use this CPU 
properly.  I had bought my parents a WRT54Gv4 last summer but left it 
with the stock firmware until DD-WRTv23 matured sufficiently to deploy 
over-the-wire-from-360-miles-away.  Their 'net speed was pretty bad and 
our h.323 videophone was spotty and choppy with both the out-of-the-box 
and latest-from-website firmwares.  I thought it was their cable modem. 
 So, last night I loaded on the final version of DD-WRTv23 and the 
thing blazes - twice the throughput and the video phone works 
perfectly.


Go, Free Software!.  I'd like to know how many people are on their 
internal team.


-Bill

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Re: Notebook Network Issues

2006-02-09 Thread Thomas M. Albright
Ben said:
>  Boot the machine with the card removed.
>  Check the logs and/or dmesg for problems with PCMCIA.
'dmesg | grep -i pcmcia' came back empty
So I tried restarting PCMCIA:
/etc/init.d/pcmcia restart
hutting down PCMCIA services: done.
Starting PCMCIA services: cardmgr [2579]: open_sock(socket 2) failed:
bad file descriptor
cardmger [2579]: watching 2 sockets
done.

When I instered the card i saw:
PCI: Enabling device :05:00.0 ( -> 0003)

lsmod before and after only showed one change: yenta_socket changed
from 'Used by 0' to 'Used by 1'

/etc/modprobe.conf says:
  alias eth0 tulip
but trying 'insmod eth0' returns
  insmod: can't read 'eth0': no such file or directory
and trying 'insmod tulip' returns
  insmod: can't read 'tulip': no such file or directory

My routing tables look good, the firewall has been flushed, and I still
can't ping even inside the network.

-- 
TARogue (Linux user number 234357)
 -Give a man a fish & he's fed for a day. Teach him to fish & he'll spend
 all day drinking beer getting sunburned.
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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Ben Scott
On 2/8/06, Mark Komarinski <[EMAIL PROTECTED]> wrote:
> All the examples for OpenVPN that I've seen assume that the OpenVPN
> server is on both the public and private network.

  According to Ye Olde FAQ, this should work.  See:

http://openvpn.net/faq.html#singlenic

  Now, your subject line says "bridging" (i.e., layer 2).  Do you
really mean that, or will a routed network do?  Routing is generally a
better solution, and I suspect bridging with a single interface will
make some things confusing, if not actually broken.

  Now, Neil Joseph Schelly is correct in that putting OpenVPN on your
NAT box would make things conceptually simpler, and the WRT54G should,
in theory, be able to run OpenVPN.  However, crypto is resource
intensive -- especially CPU intensive.  The WRT54G is a fairly bitty
box; trying to use it for that may drag down performance on
everything.

-- Ben
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Re: Video Capture in Linux

2006-02-09 Thread Lawrence Tilly
Ok...I have come to the conclusion that a USB solution in my price
range is probably not going to work under Linux.  The devices I am
finding all appear to need Win-only software to function and often do
not even appear as an attached device. I found one discussion of the
Hauppauge USB solution being used under LInux, but that's at the outer
bounds of my price range and the discussion complained of a lot of
dropped frames.  So...

I will probably go with a PCI card solution.  I am leaning toward
Hauppauge because, as mentioned, they have a good rep under MythTV
discussions and other Linux-support chats. Now I'm just trying to
decide if there's a valid reason to bypass the PV-150 ( which I see
people mention as getting in the < $100 range ) or go with the 250.
The 250 has a better software bundle but that doesn't matter to me and
the specs LOOK identical as far as capture goes.

Does anyone have personal experience ( or at least second-hand
experience ) between the 150 and 250 that they could share?
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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Neil Joseph Schelly
On Thursday 09 February 2006 08:52 am, Mark Komarinski wrote:
> Is there an OpenVPN server for the Linksys WRT54G?  The firmware I saw
> implied it was client-only.
>
> -Mark

The software is the same - different config file.  If it can do one, then it 
should be able to do both.  That said, I have no experience with hacking the 
WRT54G, but I'm reasonably sure that doesn't impair my answer.
-N
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Re: OpenVPN bridging with only one interface?

2006-02-09 Thread Mark Komarinski
On Wed, Feb 08, 2006 at 08:31:22PM -0500, Neil Joseph Schelly wrote:
> In this scenario, the client will run an OpenVPN client to get into the 
> private network.  The OpenVPN server would be easiest to add to the NAT box - 
> that's what I do for my own setup in fact.  The reason is that machines on 
> the private network will need to be able to route to the machines through the 
> OpenVPN connection, and you'll need to add static routes (assuming the NAT 
> box is the default route gateway) for the VPN clients to the machines in the 
> private network.  You'll also need to setup some form of routing on the 
> OpenVPN box so that it will forward packets (again something the NAT box is 
> already doing).

Is there an OpenVPN server for the Linksys WRT54G?  The firmware I saw
implied it was client-only.

-Mark


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Re: Information security, recycling and irony

2006-02-09 Thread Tom Buskey
A little Google on : data recovery shredded stasihttp://en.wikipedia.org/wiki/Paper_shredder
http://www.heingartner.com/shred/Picking_Up_the_Pieces.htmhttp://www.theregister.co.uk/2003/11/18/shredded_stasi_documents_could/
http://www.churchstreet-technology.com/On 2/8/06, Paul Lussier <
[EMAIL PROTECTED]> wrote:Tom Buskey <[EMAIL PROTECTED]
> writes:> There's a company in Germany that can reconstitute shreaded paper.  If it's> in strips, it's $4/pound.  Crosscut is more of course.>> They got thier start with East German Stasi materials.  They're working on
> stuff that was hand shreaded because the shreader broke.Do you have a link for this?  I'd love to know more :)--Seeya,Paul-- A strong conviction that something must be done is the parent of many bad measures.
  - Daniel Webster