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smurf... still?
by Daniel Reed 04 Feb '98

04 Feb '98

I was looking through a modified copy of smurf.c I had (it listened on a port and when an incoming connection was detected, it asked for a host and then smurfed it--or so the documentation says, I just wanted to see how the port listening was achieved) and just wanted to check how many of the broadcasts in the default bcastaddr[] still were smurfable, and noted that the *very first one* was. How would I go about finding out the administrative contact for a network given its broadcast address? Specifically I'm looking for 165.154.1.255, but there are probably some others as well... root@narnia:~# ping -c2 165.154.1.255 PING 165.154.1.255 (165.154.1.255): 56 data bytes 64 bytes from 165.154.1.26: icmp_seq=0 ttl=241 time=287.2 ms 64 bytes from 165.154.1.66: icmp_seq=0 ttl=241 time=309.0 ms (DUP!) 64 bytes from 165.154.1.7: icmp_seq=0 ttl=241 time=338.9 ms (DUP!) 64 bytes from 165.154.125.53: icmp_seq=0 ttl=242 time=358.8 ms (DUP!) 64 bytes from 165.154.1.1: icmp_seq=0 ttl=241 time=388.9 ms (DUP!) 64 bytes from 127.0.0.2: icmp_seq=0 ttl=241 time=399.1 ms (DUP!) 64 bytes from 165.154.1.8: icmp_seq=0 ttl=241 time=418.8 ms (DUP!) 64 bytes from 165.154.1.57: icmp_seq=0 ttl=241 time=439.0 ms (DUP!) 64 bytes from 165.154.1.4: icmp_seq=0 ttl=241 time=449.0 ms (DUP!) 64 bytes from 165.154.1.21: icmp_seq=0 ttl=241 time=459.0 ms (DUP!) 64 bytes from 165.154.125.53: icmp_seq=1 ttl=242 time=219.8 ms --- 165.154.1.255 ping statistics --- 2 packets transmitted, 2 packets received, +10 duplicates, 0% packet loss round-trip min/avg/max = 219.8/378.0/468.9 ms root@narnia:~# (what the heck is that 127.0.0.2 doing in there...?) -- Daniel Reed <n(a)narnia.n.ml.org> (3CE060DD) System administrator of narnia.n.ml.org (narnia.mhv.net [199.0.0.118]) What does not destroy me, makes me strong. -- Friedrich Nietzsche

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Re: mae-east problems...
by Henry Clark 04 Feb '98

04 Feb '98

At 05:09 PM 2/3/98 -0500, Rich Fulton wrote: >Anyone else seeing odd packet loss through mae-east? ^^^ At least your packet loss is predictable, and far superior to that so-called "random" loss. henry

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Re: Transparent Caching Solutions - Information Wanted
by Bill Unsworth 04 Feb '98

04 Feb '98

Interesting discussion - no many comments from ISPs currently using caching regarding the effectiveness - cache hit rates or bandwidth "saved". Any strategies for populating caches (in addition to user hits)? Bill At 12:08 PM 2/3/98 -0800, you wrote: >> Or, if you are a "Cheap Bastard (tm)", you can take a copy of Squid >> (http://squid.nlanr.net) and an OS which can handle transparent proxying >> (Solaris, Linux, etc), a high performance RAID, and have yourself the >> equivilent. Squid is a heirarchial web cache/proxy/accelerator available for >> free. > >i love squid. i use it as a nontransparent proxy and also as the web server >accelerator for all of the content we publish. squid is really cool, >especially squid-novm. > >i worry a bit about the supposed proxy capabilities of these other os's. we >don't think of ourselves as idiots here when it comes to kernel programming, >and so the fact that it's taken a year of wizard level kernel muckraking to >get a system that can do thousands of simultaneous transparent sessions makes >me think that it's actually a hard problem. > >we got basic kernel transparency working in an afternoon. the devil is in >the details though. > > U-NET Limited - Global Transit Division Transit for ISPs from PAIX, MaNAP or Telehouse London mailto:world@u-net.net http://world.u-net.net Tel 44 1925 484444 Fax 44 1925 484466

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IP Subnet for NANOG
by Ted Frohling 04 Feb '98

04 Feb '98

For those of us that have strict login rules, would anyone care to let us know the subnet(s) that will be in use in Albuquerque? -- Ted Frohling (TF30) tsf(a)Arizona.EDU The University of Arizona 520.621.4834 CCIT Telecommunications, Computer Center, Room 131 Tucson, AZ 85721 http://www.Telcom.Arizona.EDU/~tsf

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Transparent Caching Solutions - Information Wanted
by Rose, JulianX 04 Feb '98

04 Feb '98

I'm looking at the various transparent caching solutions available as per Cisco's Cache Engine. Can anyone tell me of any other products that work in a similar (transparent) manner and any experiences with these ? Thanks Julian Rose Julianx_rose Contract Internet Consultant @mail.intel.com Currently @ Intel Corporation +44 (0) 1793 403415

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Re: smurf... still?
by William Allen Simpson 04 Feb '98

04 Feb '98

Well, the Internet is a cooperative organization. The smurf nets were posted here some time ago. Maybe we should test them again, and any that are still not filtering their broadcast should simply be turned off in the routing tables until they get their act together. They are a danger to all of us, and a hazard on the net. WSimpson(a)UMich.edu Key fingerprint = 17 40 5E 67 15 6F 31 26 DD 0D B9 9B 6A 15 2C 32

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RE: mae-east problems...
by Dave Van Allen 04 Feb '98

04 Feb '98

Today in particular, or in daily in general? :-) Best regards, David Van Allen - FASTNET(tm) / You Tools Corporation dave(a)fast.net (888)321-FAST(3278) http://www.fast.net FASTNET - Business and Personal Internet Solutions -----Original Message----- From: Rich Fulton [mailto:fulton@clark.net] Sent: Tuesday, February 03, 1998 5:10 PM To: nanog(a)merit.edu Subject: mae-east problems... Anyone else seeing odd packet loss through mae-east? // Rich Fulton // Sr. Network Engineer/Systems Admin. // ClarkNet - A Verio Affiliate

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NANOG 12 Lunch Sponsorship
by William B. Norton 03 Feb '98

03 Feb '98

For those attending NANOG 12 - iHighway has graciously volunteered to provide lunch for the first 300 people on Monday and the first 275 people for Tuesday. Thanks John! We will implement the traditional ticket-based resource allocation system at the registration desk on a first-come-first-serve basis on Monday and Tuesday mornings. For others, there are plenty of local restaurants as well. See you in Albuquerque! Bill -------------------------------------------------------------- William B. Norton <wbn(a)merit.edu> (734) 764-9430 (New Area Code)

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west.net & silcom.com down?
by Neil Villacorta 03 Feb '98

03 Feb '98

Is Avtel's network down that links <west.net> and <silcom.com>? I'm getting no response from either ISP's mail or nameservers. :-) neil MetaCreations Corp.

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RE: backbone routers' priority settings for ICMP & UDP
by Dave Van Allen 03 Feb '98

03 Feb '98

Many people run 'ip spd' on busy ciscos. Best regards, David Van Allen - FASTNET(tm) / You Tools Corporation dave(a)fast.net (888)321-FAST(3278) http://www.fast.net FASTNET - Business and Personal Internet Solutions -----Original Message----- From: Marko B. [mailto:mrako@notwork.net] Sent: Tuesday, February 03, 1998 2:17 PM To: nanog(a)merit.edu Cc: marko(a)notwork.net Subject: backbone routers' priority settings for ICMP & UDP Greetings, In my travels I have heard numerous times that it is a popular practice to give ICMP and even UDP traffic a lower priority on backbone routers in times of congestion. Are there any providers that document this policy? How is this policy carried out on the actual hardware? Any pointers would be appreciated. Thanks. -Marko

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