Michael, the main task of a router is to route packets. You as a customer should not care about other aspects of the router behavior as long as it routes your packets efficiently and correctly. Let me know what is the service problem you suffer, and I will try to help you track it down. It is true that an ISP will limit (or even totaly block) ping and other icmp messages to protect against DoS. This has no effect on the service. Note that all versions of traceroute (including those that utilize tcp or udp protocols, like lft) rely on the router sending back an icmp message of "time to live exceeded". So they will fail or give wrong statistics in case anti DoS filters are applied. Dani
Michael Tewner wrote: > I've talked to the highest up network engineers at Netvision about >30% > packet loss on their vl100 router and I've consistently received the > "It's normal" answer. They claim it's part of their > anti-Denial-Of-Service system. I see it as 30% of my company's monthly > fee down the drain. > > On Fri, Jul 4, 2008 at 12:57 PM, dani <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>> wrote: > > Dotan, > > Our servers support both pptp and l2tp, which you can use directly > from Linux. > > If you have service problems while connected to the Technion, why > don't you open an helpdesk case? > > Dani > > > > Dotan Cohen wrote: > > 2008/7/4 sara fink <[EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]>>: > > > Technion web site doesn't support ping not in and not out. > So don't be > surprised if you get the ???. > > > > > No, but it supports http traffic and that often goes very slow. > Amazingly, it does so at the same time as Slashdot and Google. > And no > one else on the interwebs noticed except me. > > > > Try a ftp transfer from technion and see the speed. > > > > > The problem is intermittent. > > > > About the router, try the same thing without router. If the > problem > persists, you can tell them. > > > > I cannot connect with Linux without a router because their 'dialer' > only runs on Windows. > > > > For > http://dotancohen.com/images/examples/bezeq.html > I can't see anything written. It's 1k. I saw the images > from the examples > directory. > I saw similar patterns with bezeqint in my neighborhood. > > > > > So, the mtr results are normal, or we both are getting bad service? > > > > Only a couple of the support people know what is mtr. From > all my talks with > support at 012, only 1 knew about mtr. You need to reach to > higher levels > of support. At 012 it's called network department. They > support if you have > few pc at home. Their level is higher than others who read > from the page. > > > > > In Hebrew would that be "מחלקת הרשת"? > > > > My brother has windows, when he had problems with internet, > they had the > famous sentence "Something on your pc is blocking. go to > restore. If that > doesn't help, format the hd." And you know what else, they > told him to use > the microsoft built in firewall, nothing else. > > Here are some dns lists of all isp in israel > http://www.petri.co.il/dns_ip_addresses_for_israeli_isps_he.htm > try this also https://www.opendns.com/start > > > > > I had considered opendns. Is it recommended? Was Israeli DNS _is_ > recommended? Thanks. > > Dotan Cohen > > http://what-is-what.com > http://gibberish.co.il > א-ב-ג-ד-ה-ו-ז-ח-ט-י-ך-כ-ל-ם-מ-ן-נ-ס-ע-ף-פ-ץ-צ-ק-ר-ש-ת > > A: Because it messes up the order in which people normally read > text. > Q: Why is top-posting such a bad thing? > > > > > -- > ________________________________________________________________________ > > Dr. Daniel Arbel > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > Network Manager tel: 972-4-8294992 > Technion Computer Center fax: 972-4-8129418 > > ________________________________________________________________________ > If this e-mail can't be sent, please return to sender > > > ================================================================= > > To unsubscribe, send mail to [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> with > the word "unsubscribe" in the message body, e.g., run the command > echo unsubscribe | mail [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> > > -- ________________________________________________________________________ Dr. Daniel Arbel [EMAIL PROTECTED] Network Manager tel: 972-4-8294992 Technion Computer Center fax: 972-4-8129418 ________________________________________________________________________ If this e-mail can't be sent, please return to sender ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
