SSL Accelerators

This is a discussion on SSL Accelerators within the Linux Security forums, part of the System Security and Security Related category; We're a poor company and are looking at ways to offload our SSL traffic. Since we're cheap, we'...


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  #1 (permalink)  
Old 11-04-2005
Michael
 
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Default SSL Accelerators

We're a poor company and are looking at ways to offload our SSL traffic.
Since we're cheap, we'd like to consider one of those PCI SSL accelerators.

What experience do you guys have with SSL accelerators? Any recommendations
or caveats?


Michael


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  #2 (permalink)  
Old 11-04-2005
Christopher Browne
 
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Default Re: SSL Accelerators

> We're a poor company and are looking at ways to offload our SSL traffic.
> Since we're cheap, we'd like to consider one of those PCI SSL accelerators.
>
> What experience do you guys have with SSL accelerators? Any recommendations
> or caveats?


We've been playing with "network box" ones...

Pretty sweet stuff; we were able to use it to get an application
server (happened to be running AIX) to a load average of about 500,
and still be usable, in a "scary concurrency test."
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  #3 (permalink)  
Old 11-04-2005
Michael
 
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Default Re: SSL Accelerators

"Christopher Browne" <cbbrowne@acm.org> wrote in message
news:m3fyqdb1mi.fsf@mobile.int.cbbrowne.com...
> > We're a poor company and are looking at ways to offload our SSL traffic.
> > Since we're cheap, we'd like to consider one of those PCI SSL

accelerators.
> >
> > What experience do you guys have with SSL accelerators? Any

recommendations
> > or caveats?

>
> We've been playing with "network box" ones...


Could you explain? "Network box"? Is that a brand?

[snip]


Michael


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  #4 (permalink)  
Old 11-04-2005
Christopher Browne
 
Posts: n/a
Default Re: SSL Accelerators

> "Christopher Browne" <cbbrowne@acm.org> wrote in message
> news:m3fyqdb1mi.fsf@mobile.int.cbbrowne.com...
>> > We're a poor company and are looking at ways to offload our SSL traffic.
>> > Since we're cheap, we'd like to consider one of those PCI SSL

> accelerators.
>> >
>> > What experience do you guys have with SSL accelerators? Any

> recommendations
>> > or caveats?

>>
>> We've been playing with "network box" ones...

>
> Could you explain? "Network box"? Is that a brand?


F5 is the brand... They sell SSL accelerators that are add-on modules
for their "Big-IP" network management appliances. So SSL acceleration
takes place as a proxy on another box.

This has a *very* significant benefit over doing it inside your PC in
that you get the other "Big-IP" network traffic management features.
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  #5 (permalink)  
Old 11-04-2005
Jim Hicks
 
Posts: n/a
Default Re: SSL Accelerators

Michael wrote:
> We're a poor company and are looking at ways to offload our SSL traffic.
> Since we're cheap, we'd like to consider one of those PCI SSL accelerators.
>
> What experience do you guys have with SSL accelerators? Any recommendations
> or caveats?
>
>
> Michael
>
>

You might try this adapter.
https://www.britestream.com/
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  #6 (permalink)  
Old 11-04-2005
Colin McKinnon
 
Posts: n/a
Default Re: SSL Accelerators

Michael wrote:

> We're a poor company and are looking at ways to offload our SSL traffic.
> Since we're cheap, we'd like to consider one of those PCI SSL
> accelerators.
>
> What experience do you guys have with SSL accelerators? Any
> recommendations or caveats?
>


Looking at the history of SSL, I'd stay well clear of 'hardware' solutions
for an exposed interface.

I've found stunnel very reliable and easy to use. As a software solution,
you can run it chroot on the webserver, or on a seperate box. You say
'one'? As in you only have one webserver? In that case I'd say get a second
box to run as a webserver and run stunnel chrooted on each machine.

C.
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  #7 (permalink)  
Old 11-04-2005
Michael
 
Posts: n/a
Default Re: SSL Accelerators

"Colin McKinnon"
<colin.thisisnotmysurname@ntlworld.deletemeunlessU RaBot.com> wrote in
message

[snip]

Hi Colin,

> Looking at the history of SSL, I'd stay well clear of 'hardware' solutions
> for an exposed interface.
>
> I've found stunnel very reliable and easy to use. As a software solution,
> you can run it chroot on the webserver, or on a seperate box. You say
> 'one'? As in you only have one webserver? In that case I'd say get a

second
> box to run as a webserver and run stunnel chrooted on each machine.


Thanks for the reply. We actually have five web servers and considered
stunnel, but... Gosh, does that scale well? I'd actually love to just do
stunnel and will now give it a shot due to your suggestion (i.e. if you
suggest it, it must mean that other people must be at least trying it too).

Doing the SSL acceleration on our load balancer has been just way too slow,
but perhaps if we offloaded to each individual server via stunnel we'd be
ok.


Michael


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  #8 (permalink)  
Old 11-04-2005
Christopher Browne
 
Posts: n/a
Default Re: SSL Accelerators

> Michael wrote:
>
>> We're a poor company and are looking at ways to offload our SSL traffic.
>> Since we're cheap, we'd like to consider one of those PCI SSL
>> accelerators.
>>
>> What experience do you guys have with SSL accelerators? Any
>> recommendations or caveats?
>>

>
> Looking at the history of SSL, I'd stay well clear of 'hardware' solutions
> for an exposed interface.
>
> I've found stunnel very reliable and easy to use. As a software solution,
> you can run it chroot on the webserver, or on a seperate box. You say
> 'one'? As in you only have one webserver? In that case I'd say get a second
> box to run as a webserver and run stunnel chrooted on each machine.


But the reason to be interested in SSL accelerators is the fact that
they, well, accelerate it.

I'll buy the story that it's better to separate it to another host,
but "stunnel" won't get you one iota of hardware acceleration, which
was the point of the exercise in the first place.
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