Re: diagnosing network speed bottlenecks [SOLVED]

2009-10-01 Thread Ben Scott
On Wed, Sep 30, 2009 at 9:47 PM, Greg Rundlett (freephile) g...@freephile.com wrote: Sorry, I was misreading Comcast service as being measured in megaBytes (big B) while it's actually stated in megabits (little b). Be aware there's no standard symbol for bytes, bits, or octets. The B = byte,

[GNHLUG] [DLSLUG-Announce] DLSLUG: next meeting November 5th

2009-10-01 Thread Bill McGonigle
Just a quick note so everybody knows the next meeting will be November 5th. We'll be in Haldeman 041 (with desktop power), so we'll do the encryption / key-signing meeting then. -Bill -- Bill McGonigle, Owner BFC Computing, LLC http://bfccomputing.com/ Telephone: +1.603.448.4440 Email, IM,

Re: diagnosing network speed bottlenecks [SOLVED]

2009-10-01 Thread Ben Scott
On Thu, Oct 1, 2009 at 12:28 PM, Jerry Feldman g...@blu.org wrote: Basically, (as you did mention in the last paragraph) data communications are almost always serial. However dialup modems are capable of transmitting synchronized signals. I didn't think this was the case, but I just checked

VPN problem...

2009-10-01 Thread Alex Hewitt
I recently was relating on the list how a client was having a problem with their Linksys BEFSX41 router and the solution was that Linksys RMA'd the router. They apparently have removed the BEFSX41 model from their active product list so they sent me a BEFVP41 v2 model. I received it yesterday,

Re: VPN problem...

2009-10-01 Thread Ben Scott
On Thu, Oct 1, 2009 at 4:59 PM, Alex Hewitt hewitt_t...@comcast.net wrote: If the router doesn't know the time .. then the VPN connection might not work. Quite possible. If it's using X.509 certificates (like SSL does), one can specify effective and expiration dates in the certificate. If

Re: diagnosing network speed bottlenecks [SOLVED]

2009-10-01 Thread Ben Scott
P.S.: On Thu, Oct 1, 2009 at 12:28 PM, Jerry Feldman g...@blu.org wrote: Actually, it really does not matter because very few of us actually use a phone modem any longer. That too. :-) -- Ben ___ gnhlug-discuss mailing list

Re: RCN business services reliability and bandwidth

2009-10-01 Thread Ben Scott
On Thu, Oct 1, 2009 at 1:04 PM, Jerry Feldman g...@blu.org wrote: So when they run our product it is X over IP, which is very slow (and considerably slower since the upgrade). There were ways to manipulate the X protocol to perform better over high-latency links, with things like special

Re: VPN problem...

2009-10-01 Thread Lloyd Kvam
On Thu, 2009-10-01 at 16:59 -0400, Alex Hewitt wrote: For the fun of it I set the router to obtain it's WAN address dynamically and immediately the VPN tunnel connected. I checked the logs but didn't see anything obviously wrong. I did notice that when the router is setup to use a dynamic

Re: VPN problem...

2009-10-01 Thread Ben Scott
On Thu, Oct 1, 2009 at 5:50 PM, Hewitt_Tech hewitt_t...@comcast.net wrote:  Any idea what protocols the LinkSys is using?  IPsec?  IKE?  SSL/TLS?  X.509? It's definitely using IKE. Okay, IPsec with IKE can use PSK or X.509 certificates. Which one is your LinkSys using? If it's PSK

Re: VPN problem...

2009-10-01 Thread Lloyd Kvam
On Thu, 2009-10-01 at 18:50 -0400, Hewitt_Tech wrote: Thanks for the help guys. I fixed it by setting up the cable modem as I was describing. I changed the Linksys router to get it's WAN address dynamically. I then re-configured the cable modem to create a DMZ which only has one computer (in

Re: VPN problem...

2009-10-01 Thread Ben Scott
On Thu, Oct 1, 2009 at 7:48 PM, Lloyd Kvam pyt...@venix.com wrote: I've seen DSL modems with 2 modes of behavior:      * bridge mode ...      * NAT/router ... I don't know if the cable modems offer similar capabilities. It's a bit different in cable-modem-land. DSL is typically running

tweaking sockets / OS parameters for speed

2009-10-01 Thread Bruce Labitt
Have a client-server app that is set up to communicate over a local Gbit network. The bottleneck appears in the client to server uplink for large payloads. At this point it isn't clear where the delay is, (client or server side) but the sustained rate is not good enough. Can anyone recommend

Re: VPN problem...

2009-10-01 Thread Joshua Judson Rosen
Ben Scott dragonh...@gmail.com writes: On Thu, Oct 1, 2009 at 5:50 PM, Hewitt_Tech hewitt_t...@comcast.net wrote:  Any idea what protocols the LinkSys is using?  IPsec?  IKE?  SSL/TLS?  X.509? It's definitely using IKE. Okay, IPsec with IKE can use PSK or X.509 certificates. Which

Re: diagnosing network speed bottlenecks [SOLVED]

2009-10-01 Thread Bill McGonigle
On 10/01/2009 12:28 PM, Jerry Feldman wrote: Actually, it really does not matter because very few of us actually use a phone modem any longer. Ah, city folk. ;) -Bill (in 35% dial-up country) -- Bill McGonigle, Owner BFC Computing, LLC http://bfccomputing.com/ Telephone: +1.603.448.4440

Re: RCN business services reliability and bandwidth

2009-10-01 Thread Bill McGonigle
On 10/01/2009 05:33 PM, Ben Scott wrote: There were ways to manipulate the X protocol to perform better over high-latency links, with things like special proxy servers, compression algorithms, etc. At the risk of being on-topic, the FreeNX suite is an implementation of this with those goals

Re: VPN problem...

2009-10-01 Thread Bill McGonigle
On 10/01/2009 08:06 PM, Ben Scott wrote: [1] The front panel says Comcast, but the top of the case still has a giant SMC molded into the plastic. Same model here. After turning off all of its 'features', it seems to work well. The only trick was changing the management interface to run on a

Re: tweaking sockets / OS parameters for speed

2009-10-01 Thread Bill McGonigle
On 10/01/2009 08:36 PM, Bruce Labitt wrote: Any suggestions? Places to look? Guess it is time for wireshark... Anything else? Are you supporting jumbo frames all the way through your stack? -Bill P.S. if you reply to a message and change the subject, the In-Reply-To headers are preserved,