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2002/7/20-21 [Computer/Networking] UID:25396 Activity:high |
7/20 I though ping and traeroute used the same protocol. Is it possible to block the routing of ping requests without blocking the routing of traceroutes? \_ yes. they both use ICMP, but different aspects of it. (Blocking either is probably a bad decision). -tom \_ Why would you say blocking ping/traceroute is a bad decision? I've blocked both for years and nothing has happened. \_ I suppose it's OK if you're the only network user. It's a bad decision on multi-user networks, because it removes the only tools users have to figure out where or what a problem is. It could also block your ISP from properly diagnosing a network problem. -tom \- i think it is perfectly reasonable to block ping and traceroute for a "personal network space". for a larger institution obviously a decision for "everyone" depends on circumstances but doing it via a host-based firewall is also quite reasonable. if you are going to firewall in teh first place, then i dont thing adding these blocks is any big deal. --psb \_ blocking icmp at your upstream can help prevent some DDoS attacks though they could always switch to a different type (udp, etc) \_ traceroute usually uses udp for outbound, and icmp ttl exceeded on the inbound. ping is just icmp echo/reply. You could theoretically get up to 9 hops of traceroute with ping's record-route option, but its not same as traceroute. depending on how your filters work, you could block ping and traceroute into your systems, and still enable it outbound. -ERic |
2002/7/20-21 [Reference/Celebration] UID:25397 Activity:high |
7/20 Happy birthday Anthony (aspolito) \_ I got yer birthday fuck right here pal. \_ Perhaps this is evidence against Darwin's theories. If it breeds successfully then I'm going to start attending Sunday services. \_ there will be no breeding -aspo \_ Thank you. \_ Whew... I was starting to shop for bibles. \_ not coat hangers? -aspo |
2002/7/20-21 [Politics/Domestic] UID:25398 Activity:high |
7/20 Aaah, a Kinneyless motd. Thank God. We should be thankful that kuro5hin lets anyone blog. \_ Who the hell is Kinney anyway? I have recently turned my thoughts to capitalism and how we DO NOT live in a capitalist market place. There is a lot of talk about how competition drove corporations into the ground (particularyly telecom!) however why is it that some suceed and some don't? In real competition everyone suceeds which drive innovation and improvements, however in american competition the gains are not in effectively competeing the gains are when you have gained market power.. ie you have become a monopoly. This is mainly why we had such large appreciations in equity pricing. Fundamentaly that had no changed.. Most corporations in america will in the long run enjoy monopoly power, this will continually allow american corps to grow. however they are doing so by violating what economists think of as competition. Firms gain market power through the use of contractual terms, end user agreements, legislation, regulation, and also through the use of advetising(marketing). And most importantly they utilize the PATENT. My train of throught has led me to believe that patents and copyrights are a serious drag on the long run economy. \_ just look at /csua/tmp/motd.kinney \_ [ kinneydrivel deleted. ] Go away. |
2002/7/20-23 [Computer/SW/RevisionControl] UID:25399 Activity:moderate |
7/20 What's the "approved" way to correct a typo made in an RCS log message. \_ ED! \_ from rcs(1) -mrev:msg Replace revision rev's log message with msg. --Jon \_ Thanks. \_ MS has some freebie tools for stuff like this. Sorry I can't recall the name of any of it but I know they exist. There's also third party stuff. It's thankfully been a very long time since I've had to admin an NT machine.... -solaris dude \_ Dependency Walker \_ There's a program called handleEx that does it \_ Don't bother with tools just vi RCS/fname,v \_ That is why you fail. \_ When you see the ,v files for what they are, you will know why the tools limit you little grasshopper \_ but for those who can't figure it out, the tools are like kevlar for their foot. \_ And oh great one, enlighten us in the ways of the ,v file! |