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Comcast spam problems pile up
(old news - 10:55AM Friday Apr 16 2004)
tags: cable · spam
With the number of infected spam relays on Comcast's network, it's getting to be less and less fun to be a Comcast subscriber. If an IP range isn't blacklisted by one major anti-spam group, it's likely to have been blacklisted by another. While the company received kudos from the mainstream press for sending out letters and subsequently terminating some zombie machines, our users continually point out the problem appears to only be getting worse....not better. The Spamhaus SBL advisory continues to grow, while Senderbase records paint an unflattering picture.

Related:
  1. Comcast to Use Spamhaus
  2. Cox Spam Filters Deleting Legit Mail?
  3. Charter Employee Data Stolen
  4. Comcast, Like AT&T, Takes Heat For Neighborhood Cabinets
  5. Wide Open West Testing 15Mbps Tier?
  6. AT&T Shutters Old BellSouth TV Service
  7. Craig Moffett: Network Upgrades Are For Ninnies
  8. ISPs Whine About Network Neutrality 'Paranoia'
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SuperJudge
Magus
Premium
join:2002-11-14
Albany, GA
clubs:

I wonder if...

Spam™ is still making a stink about unsolicited email being called spam?
--
Updated My Journal
TP&C

Karl Bode
News Guy
join:2000-03-02

Re: I wonder if...

They were only really concerned with companies copyrighting products with the "spam" name in it....they never had an objection to the general usage of the term to refer to mass e-marketing.
fantomposter
Phantom Poster
Premium
join:2002-09-21
Independence, OH

said by SuperJudge See Profile:
Spam™ is still making a stink about unsolicited email being called spam?

They don't mind, as long as you all cap SPAM when refering to the meat, and Spam or spam when refering to email.

»www.spam.com/ci/ci_in.htm

SuperJudge
Magus
Premium
join:2002-11-14
Albany, GA
clubs:

Re: I wonder if...

Nice find. SPAM.

fireflier
Coffee. . .Need Coffee
Premium
join:2001-05-25
Limbo
If Hormel is getting bent out of shape about it, we could always start calling it email gristle?:D

SuperJudge
Magus
Premium
join:2002-11-14
Albany, GA
clubs:

Re: I wonder if...

Spiced ham email.
bogey780

join:2004-03-19
Covington, LA

Re: I wonder if...

Shoulder of Pork mail

geeknik

join:2000-04-30
Luther, OK

Re: I wonder if...

potted email?

SuperJudge
Magus
Premium
join:2002-11-14
Albany, GA
clubs:

Re: I wonder if...

Leg of email.

Rob
In Deo speramus
Premium
join:2001-08-25
Kendall, FL
·Comcast
·AT&T Southeast

FCC

I think the FCC needs to step in and put Comcast back in their place. First with the invisible caps, and now again with spammers on their network.... This is getting out of hand.

Seems like Comcast is more concerned with making a quick buck, than keeping their subscribers happy.
--
Do not judge those who try and fail; Judge those who fail to try.

Nightfall
My Goal Is To Deny Yours
Premium,MVM
join:2001-08-03
Grand Rapids, MI
clubs:
·Site5.com
·AT&T Midwest
·Comcast

Re: FCC

Lets take it a step further.

There are zombie machines on every broadband provider's network. As of right now, according to my router logs, I am getting hit by comcast, charter, SBC, etc. This goes far beyond just Comcast's problem. Broadband providers need to step up and take care of this problem.

Now you know why some ISPs are not permitting servers to be run on their connections. It is obvious that the common user cannot successfully administer these servers that they want. If they could, then this wouldn't be an issue.

Now, what to do about these infected machines? I still think my original idea works.

Step 1 - Notify the user via email. Give one week for the computer to be cleaned.
Step 2 - Notify the user via email and snail mail or telephone. Give one week for the computer to be cleaned.
Step 3 - Cut users internet access and notify user. Until system is cleaned, access will not be reactivated.

Make this a policy across the board through all ISPs. That will solve the problem.
--
My Domain
Nightfall's Hockey and Life Journal

Maxo
Your tax dollars at work.
Premium,VIP
join:2002-11-04
Tallahassee, FL
clubs:

Re: FCC

I agree with your suggestion.
--
»maxolasersquad.com
TheMonkey2

join:2004-02-07
Charlottetown, PE

edit:
April 16th, @11:48AM

Covad do this all the time .. for spammers and also account that harbour virus infected machines. People who refuse / cannot clean their machines have had their accounts terminated in the past.

oldTDNickell
Premium
join:2000-12-19
Federal Way, WA

said by Nightfall See Profile:
Lets take it a step further.

There are zombie machines on every broadband provider's network. As of right now, according to my router logs, I am getting hit by comcast, charter, SBC, etc. This goes far beyond just Comcast's problem. Broadband providers need to step up and take care of this problem.

Now you know why some ISPs are not permitting servers to be run on their connections. It is obvious that the common user cannot successfully administer these servers that they want. If they could, then this wouldn't be an issue.

Now, what to do about these infected machines? I still think my original idea works.

Step 1 - Notify the user via email. Give one week for the computer to be cleaned.
Step 2 - Notify the user via email and snail mail or telephone. Give one week for the computer to be cleaned.
Step 3 - Cut users internet access and notify user. Until system is cleaned, access will not be reactivated.

Make this a policy across the board through all ISPs. That will solve the problem.

I also agree with you Nightfall,but i think they have to stop the self installation,s hookups.
As it is now the installer never see,s the computer getting the new installation and that computer could be dirty from the start.

Comcast and other HSI network need to have some control over hookup,s from the start.:(
--
Terry D.

from outer space




from:
Pz_ See Profile

Re: FCC

--------------------------------------------
I also agree with you Nightfall,but i think they have to stop the self installation,s hookups.
As it is now the installer never see,s the computer getting the new installation and that computer could be dirty from the start.

Comcast and other HSI network need to have some control over hookup,s from the start.
--
Terry D.
--------------------------------------------

Surely you jest! When Comcast came to install my connection, they fooled around with trying to get it provisioned for a couple of hours... then I had to step away for a couple of minutes. When I returned, they were on my system un-installing some of my hardware drivers for my ATI 8500DV A-I-W, and several other hardware functions along with my dialer for my fax and a few other things ( read this as "Custom Written Software" that I had written.

For what it's worth, these guys didn't know the first thing about a computer system, what to do with it, how to work it or anything else. To top it off, when they left, the internet connection wasn't working and my machine wasn't booting correctly. These guys told me the problem was becaue I have my HP 990 hooked to 2 physical systems at the same time ( 1 USB; 1 Parallel)!

It took me some 3 days to start from scratch and re-install my operating system and everything else.

Now, if for any reason Comcast comes to do anything, I don't let them touch anything execpt perhaps the cable modem.. heck.. after all... that's theirs, but if they want to re-plug my machine from out of my router to the back of their modem, I grill em' pretty good to find out what they think they are going to accomplish... and for goodness sake... my keyboard is completely off limits...
SongCloud

join:2002-11-17
Franklin Park, IL

Re: FCC

I have had Comcast install cable internet 3 times in 3 different places. The people that they have doing the installations are morons at best. The last time I had the HSI service installed, I had to teach the 2 installers how to use the ping command. They didn't even know that they had to use a proxy to enable the connection. I will NEVER let an installer touch any of my machines. It's just too risky given my prior experiences with installers. Anyway, anything they need to do, I can do myself, and probably quicker and more efficiently. CCNA certification comes in handy sometimes!!

~SongCloud

Krispy
Premium,VIP
join:2001-12-11
the stix

said by Nightfall:
Step 1 - Notify the user via email. Give one week for the computer to be cleaned.
A week?!?!?! Oh my, within 24 hours these machines can send out hundreds of thousands of messages, a week is FAR too long to wait. In some cases I suspend without warning, I don't like to do it but if it's a particularly busy worm/virus/trojan then it's in both the subscriber's and ISP's best interest to have that machine stop being abused ASAP.

quote:
Step 2 - Notify the user via email and snail mail or telephone. Give one week for the computer to be cleaned.
Another week?!? By now we're into the millions of messages and the machine is likely exploited by a few different groups/individuals. And snail mail is far too costly in the long run (costs more then just the cost of a stamp) and you know where those costs will eventually end up. Do you really want to have to pay for the fact that your neighbor consistently opens any attachment sent to them?

quote:
Step 3 - Cut users internet access and notify user. Until system is cleaned, access will not be reactivated.
How do you determine if the system is cleaned? Most ISP's legal departments would choke on their screams if they were told the company was accessing subscriber's PCs, registries, etc.

Subscriber security is the responsibility of the subscriber, sure ISPs have to occasionally take out the whacking stick to remind some people but in the end it's the subscriber's PC and ISPs cannot dictate what they can and cannot do/install/whatever on their PC, the best an ISP can do is say 'you're not going to do it on my network'.

In my opinion one of the biggest problems facing abuse departments right now is the overwhelming number of abuse reports and the lack of any type of standardized logs which makes automation near impossible. For every 100 abuse reports we receive about 80% are invalid (contain no info outside of 'STOP THIS OR I WILL CALL FBI') and the remaining 20% are valid (and that's being generous) but we need to trudge through the entire lot to find that 20%.

Also, it would help abuse departments and their management if network security was more of a selling point as far as the consumer was concerned, if marketing finds out they lost X number of subscribers because the competition responded to abuse reports in a more timely fashion and kept them off blacklists, etc then marketing would be advocating more resources for those departments.

Nightfall
My Goal Is To Deny Yours
Premium,MVM
join:2001-08-03
Grand Rapids, MI
clubs:
·Site5.com
·AT&T Midwest
·Comcast

Re: FCC

I agree, a week is a little too long.

If I were in charge, it would be 4 hours or immediate suspension of internet access. However, as other posters have said, this is very labor intensive. How many network engineers are you going to have watching over these connections. The big question is, should have have to be spending hours policing all the computers on their network? I am a network manager and that is my job, but I also regulate what all the computers have on them in my network. On the broadband network, these engineers are going to have much much more to deal with.

Looks like a difficult situation to deal with.
--
My Domain
Nightfall's Hockey and Life Journal
fantomposter
Phantom Poster
Premium
join:2002-09-21
Independence, OH

said by Nightfall See Profile:


Step 1 - Notify the user via email. Give one week for the computer to be cleaned.
Step 2 - Notify the user via email and snail mail or telephone. Give one week for the computer to be cleaned.
Step 3 - Cut users internet access and notify user. Until system is cleaned, access will not be reactivated.


An infected machine can send millions of spam messages a day. You are letting the infected user sent 14 million+ messages before your plan does anything about it. I think that is totally unaceptable.

Upon receipt of a complaint and verification that the machine is infected, easy to do with a scan, the ISP must immediatly stop the flow of spam, period.

And that is easy to do also. A simple outgoing port 25 block at the nearest router for the IP address the infected user is on and the flow of spam stops.

There is no reason for anything more than 3 to 4 day turn around time on stopping the flow of spam from an infected machine. Any thing less is an excuse by the ISP.

newview
Ex .. Ex .. Exactly
Premium
join:2001-10-01
Parsonsburg, MD
·Vonage

Re: FCC

said by fantomposter See Profile:
A simple outgoing port 25 block at the nearest router for the IP address the infected user is on and the flow of spam stops.
BINGO

But take it a step further . . . port 25 blocking across the entire network. Stopping the spam abusing the rest of the internet takes precedence over the inconvenience of those who may be legitimately sending email thru servers other than those belonging to their ISP.

Then Comcast can fight it out with zombied customers who continually bang on the door of a closed port without the rest of the internet receiving the garbage.
--
The Rules of Spam | Maryland's New Anti-Spam Law
Where are we going? And what's with the hand basket?

JTRockville
Data Ho
Premium,MVM
join:2002-01-28
Rockville, MD
clubs:

Re: FCC

Does the solution always have to be soooooooo draconian?

AOL has enjoyed much success by blocking port email from the offending IPs.

Why couldn't/doesn't Comcast do this?

Nightfall
My Goal Is To Deny Yours
Premium,MVM
join:2001-08-03
Grand Rapids, MI
clubs:
·Site5.com
·AT&T Midwest
·Comcast

Re: FCC

said by JTRockville See Profile:
Does the solution always have to be soooooooo draconian?

AOL has enjoyed much success by blocking port email from the offending IPs.

Why couldn't/doesn't Comcast do this?

That is also an option.

Maybe keep these ports open to you initially, but then if your system is comprimised, the ports are closed. I think of it like network access. You are given full rights to do what you want. If you prove yourself to be a moron when it comes to security, then you are downgraded. If the ISP downgrades you, then they have to submit a message to the user explaining why and so on.

Obviously, this won't fix the port 80 attacks bouncing off my router because you can't close that port if the user is a moron without shutting down their entire internet access.

In some cases, it has to be draconian and in other cases it doesn't. If we want to have a system like this, each ISP is going to have to hire experienced network people to be able to determine if these machines have been comprimised. There should be a checks and balances system in place so only the users who have comprimised machines have their connections turned off or ports closed. There can be no room for error due to the fact that it will take only one user who gets shut down to complain about it and cause a huge stink.

Since experienced network people cost money, and you are going to need a nice group of them to monitor all the systems and look for violations, I don't see it happening.

It would be easier to just cut the connection instead of do it the right way.
--
My Domain
Nightfall's Hockey and Life Journal
fantomposter
Phantom Poster
Premium
join:2002-09-21
Independence, OH

Re: FCC

said by Nightfall See Profile:

Maybe keep these ports open to you initially, but then if your system is comprimised, the ports are closed.

Good idea, but how about the converse? Close them all and open it for anyone that asks. My GUESS, 95 percent of the people would not even notice they were closed.

TheMadSwede
Premium
join:2001-01-30
Holland, MI
·Charter Pipeline
·AT&T Yahoo

Re: FCC

said by fantomposter See Profile:
said by Nightfall See Profile:

Maybe keep these ports open to you initially, but then if your system is comprimised, the ports are closed.

Good idea, but how about the converse? Close them all and open it for anyone that asks. My GUESS, 95 percent of the people would not even notice they were closed.

I'm with you 100% on this, but I'm also laughing to myself as I imagine all the glass-is-half-empty posters here on BBR complaining about port 25 being blocked by that darn [insert ISP name here]. We're never happy.
--
A good idea expressed in a poor manner is a bad idea.

JTRockville
Data Ho
Premium,MVM
join:2002-01-28
Rockville, MD
clubs:
·LINGO
·Sprint Mobile Broa..
·surpasshosting
·Verizon FIOS

said by Nightfall See Profile:
Since experienced network people cost money, and you are going to need a nice group of them to monitor all the systems and look for violations, I don't see it happening.
Does Comcast really think they can provide network services without hiring experienced network people? Weren't the "synergies and efficiencies" of running such a huge network supposed to minimize costs such as these?

If you don't see experienced network people dealing with these issues competently, then you've overlooked AOL (and probably other providers too).

TamaraB
Question The Current Paradigm
Premium
join:2000-11-08
Underway
·Verizon Online DSL

said by Nightfall See Profile:
There are zombie machines on every broadband provider's network. As of right now, according to my router logs, I am getting hit by comcast, charter, SBC, etc. This goes far beyond just Comcast's problem.
According to our sendmail logs we see the same; However
the spam from Comcast is more than all the others you
mention combined.
said by Nightfall See Profile:
Now, what to do about these infected machines?
Route ALL packets with a destination port of 25 to an
authorised Comcast SMTP server. Problem SOLVED Cheaply!

If you dissallow direct SMTP From broadband networks, the
totality of the spam problem as we know it, will cease to exist; and blacklist operators will concentrate on direct
spammers.

This would also enhance security, as the major reason for
hijacking home pc's on broadband networks is to turn them into smap-bots. There would be nothing to be gained by spammers hijacking computers connected to broadband connections.
said by Nightfall See Profile:

Step 1 - Notify the user via email. Give one week for the computer to be cleaned.
Step 2 - Notify the user via email and snail mail or telephone. Give one week for the computer to be cleaned.
Step 3 - Cut users internet access and notify user. Until system is cleaned, access will not be reactivated.

Make this a policy across the board through all ISPs. That will solve the problem.
This solution is VERY Labor intensive (Labor=$$$), and would actually exaserbate the problem. Spammers would step up the hijackings, knowing they had a very limited time (One week by your solution) to use the infected PC's.

I am afraid port-blocking is the only viable solution if you really want to stop this abuse. I would also advocate blocking all port 80 inbound connections to broadband networks, as a lot of hijackings are for the purpose of "bullet-proof" web hosting.

For those subscribers who absolutely need direct SMTP/HTTP to their home machines, some form of special service can be offered. Perhaps taking a course, and taking a test, and paying a bit more?? Perhaps a periodic security scan on these by the ISP ??

Bob
--
Motor Vessel - Tamara B. - 43' Long-Range Trawler Cape Elizebeth ME.»www.tamara-b.org
russotto

join:2000-10-05
Collegeville, PA

Re: FCC

Anti-spammers are always willing to destroy the net in order to save it.

One point of having a broadband connection -- particularly one such as mine with a static IP -- is to have a first-class connection to the Internet. Some port-80(in) and port-25(in/out) blocked abomination doesn't cut it.
BosstonesOwn

join:2002-12-15
Everett, MA
clubs:
·Comcast Formerly ..

Re: FCC

said by russotto See Profile:
Anti-spammers are always willing to destroy the net in order to save it.

One point of having a broadband connection -- particularly one such as mine with a static IP -- is to have a first-class connection to the Internet. Some port-80(in) and port-25(in/out) blocked abomination doesn't cut it.

Then you choose an isp that wants to give you those options comcast does not give this option. That simple you want it you pay for it. I think comcast should block it and stop all the spam make our network a better place. Let the other isps worry about their problems.

If such a drastic amount of spam is being sent from the comcast network. I think a port block is well warranted. We want a better more stable network and people sending spam over it does nothing for us but drag it down.

Close them ports and save our network comcast
--
This package does not contain a winner...

JTRockville
Data Ho
Premium,MVM
join:2002-01-28
Rockville, MD
clubs:
·LINGO
·Sprint Mobile Broa..
·surpasshosting
·Verizon FIOS

Re: FCC

Let's not forget the reason why such a drastic amount of spam is spewing from Comcast domains: Comcast has allowed spam to flourish, unchecked, for a very long time.

Does their inaction warrant a port block for their entire customer base?

Maybe. But the situation could be diffused much more effectively with a policy that is tough on spammers and zombies, rather than all Comcast customers.

TamaraB
Question The Current Paradigm
Premium
join:2000-11-08
Underway
·Verizon Online DSL

Re: FCC

said by JTRockville See Profile:
Let's not forget the reason why such a drastic amount of spam is spewing from Comcast domains: Comcast has allowed spam to flourish, unchecked, for a very long time.
Why do you suppose that is?? Greed perhaps??

said by JTRockville See Profile:
Does their inaction warrant a port block for their entire customer base?
Yes; but I doubt it will ever happen, it would hurt bottom line.

said by JTRockville See Profile:
Maybe. But the situation could be diffused much more effectively with a policy that is tough on spammers and zombies, rather than all Comcast customers.
An effective policy would work, but it too would affect bottom line. It costs $$$ to chase down, warn, help clean, monitor, and expell users. Greed won't allow this to happen.

Only when action is less expensive than inaction will things change. When a significant portion of the net gets so pissed that they block Comcast IP blocks (both port 25 and 80) will Comcast do something real. They will fix the problem when it costs too much not to.

Bob
--
Motor Vessel - Tamara B. - 43' Long-Range Trawler Cape Elizebeth ME.»www.tamara-b.org

TamaraB
Question The Current Paradigm
Premium
join:2000-11-08
Underway
·Verizon Online DSL

said by russotto See Profile:
Anti-spammers are always willing to destroy the net in order to save it.
Actually it's the spammers, and those ISPs and individuals who support them who are willing to destroy the net. Anything to make a buck eh??

Bob
--
Motor Vessel - Tamara B. - 43' Long-Range Trawler Cape Elizebeth ME.»www.tamara-b.org

Andrew J
Premium
join:2001-11-09
Lancaster, PA
clubs:
·Comcast
·Vonage
·Verizon Online DSL

Now you know why some ISPs are not permitting servers to be run on their connections.
-----------------------------
The only way to run a server over cable without hosing the node is to have one cable for down and another cable for up. I can tell you that ain't gonna happen anytime soon.
--
If you give a little and they give a lot.

TraumaJunkie
Premium
join:2004-03-05
Knoxville, TN

said by Nightfall See Profile:
Lets take it a step further.
Step 1 - Notify the user via email. Give one week for the computer to be cleaned.
Step 2 - Notify the user via email and snail mail or telephone. Give one week for the computer to be cleaned.
Step 3 - Cut users internet access and notify user. Until system is cleaned, access will not be reactivated.

This is very close to what Comcast does. When a machine is identified as spamming the access to outbound email is cut off for 24 hours and an email is sent to inform the user they have been identified and given a chance to clean up their machine. Ignoring the warning leads to total cut-off of access to email and eventually the service is shut down for abuse. The local call center personnel can not reverse these blocks or termination of service, it has to be handled directly by the abuse department.

Spam has gotten out of hand and legislation will not stop it. I have no idea how to stop spam but would wholeheartedly support any inititive that would put an end to ANY and ALL UNSOLICITED email.
--
Air goes in and out, blood goes 'round and 'round. Any deviation from this can indicate a problem.

newview
Ex .. Ex .. Exactly
Premium
join:2001-10-01
Parsonsburg, MD
·Vonage

What's it going to take . . . ?

I'm convinced that Comcast really doesn't care about their users sending spam, zombied machines or otherwise, and that it's going to take an Internet Death Penalty to make them start disconnecting their spammers. Event though I'm a Comcast subscriber, I will applaud that action when it happens.
--
The Rules of Spam | Maryland's New Anti-Spam Law
Where are we going? And what's with the hand basket?

Krispy
Premium,VIP
join:2001-12-11
the stix

Re: What's it going to take . . . ?

Well I would have agreed with you a few months ago but since their name was splashed all over the media it seems their upper management has decided to invest more resources in getting this issue resolved and they're beginning to make progress. I'm not saying they're there yet but it's a case of 'better late then never' I guess so at this point I'm going to bite my tongue and see if they actually keep it up.

Comcast recently reached out to us and provided us with a direct contact to assist in abuse/security issues and that's a HUGE change from the previous blackhole that was their abuse/security department.

Comcast La-La Land



Re: What's it going to take . . . ?

===================================

Comcast recently reached out to us and provided us with a direct contact to assist in abuse/security issues and that's a HUGE change from the previous blackhole that was their abuse/security department.

==================================

Huh?? What??? where is this documented???

And to report Spam, they want you to use thier web-broswer to look at your email, mark it as "spam" and then dl the e-mail..... what a pain in the tail.. so I've done this over and over and yet I still coninue to get the same stuff from the same places... but when it comes from domains we know are bad and when the userid is known to be bad.. why do we keep getting this crapola?

newview
Ex .. Ex .. Exactly
Premium
join:2001-10-01
Parsonsburg, MD
·Vonage

What's it going to take . . . ?

said by Krispy See Profile:
. . . it seems their upper management has decided to invest more resources in getting this issue resolved and they're beginning to make progress.
I don't see ANY progress being made.

All I see is continually increasing listings in the Spamhaus SBL and Comcast NOT acting on SpamCop reports which document IPs that have had tens of thousands of complaints. And . . . more and more blacklists that are beginning to add bona fide Comcast controlled mail servers to their deny tables.
--
The Rules of Spam | Maryland's New Anti-Spam Law
Where are we going? And what's with the hand basket?

Krispy
Premium,VIP
join:2001-12-11
the stix

Re: What's it going to take . . . ?

Well it's only my opinion but compared to the zero action I saw before I am seeing a difference now. They can't fix it overnight and it will take some time (justifiably so) before the major RBLs take them at their word and delist them.

mbernste
Boosted
Premium,MVM
join:2001-06-30
Piscataway, NJ
·Comcast
·Optimum Online

Comcast vs OOL

I have both a Comcast and OOL e-mail account. On OOL I have yet to get a single piece of spam, yet on Comcast I get 10-15 messages per day from these zombied machines. I don't see any postings about accounts being turned off due to zombied machines over in the OOL forum.

What is OOL doing that Comcast isn't?
--
Comcast BBQ

See 8 replies to this post

KeepOnRockin
Music Lover Forever
Premium
join:2002-11-08
Beaverton, OR
·Comcast
·Verizon Online DSL

This Isn't Good For Subscribers...


At least for Comcast subscribers that don't spam (like me).
I run an email server, but it is locked down and cannot be hijacked.

It's spammers that give Comcast ISP a bad name. With Comcast IP ranges being blacklisted, there is an increasing chance that legitimate email by non-spamming subscribers will not reach their destination.

It is unfortunate that blanket (extreme) remedies must be taken to combat this spam. Blacklisting entire ISP IP ranges is a bit harsh.

Are people really willing to risk blocking out a huge number of legitimate users just to combat a few spammers on an IP range? I'm sure there are a whole lot more legitimate users than spammers on Comcast.

Optimally, problems like this should be dealt with on a case-by-case basis.

Andrew J
Premium
join:2001-11-09
Lancaster, PA
clubs:
·Comcast
·Vonage
·Verizon Online DSL

Re: This Isn't Good For Subscribers...

At least for Comcast subscribers that don't spam (like me).
I run an email server, but it is locked down and cannot be hijacked.
--------------------------------
This is the fix then. It will take 10 years to finally have an impact though. You want the new Longhorn OS? Fine, you must agree to auto updates or the OS will not work on a network. That will make sure the tiny built in firewall stays on and does something. But, with all the other OS versions floating around you can see how this will take years to put a dent in this mess.
--
If you give a little and they give a lot.

Excalibur-DTE



Blacklisting Madness

I personally agree; the process of blacklisting and port forwarding the "correct way" is a time consuming process; whether your working with ACL deny entries or anti-spam inclusions within *un-named* firewalls or 'packet-level' intrusion detection systems. I truley dont need or want any users traversing my system(s), but for those who are legitimately file-sharing or hosting certain services for personal or commercial use; It's "A SHAME" that these measures are becoming necessary.

I hope everyone gets the big picture when you think of a scenerio based upon an indivial: "im a person who doesnt know much about computers; I'll be the first to admit I'm not good at computing, but my job requires the use of technology."

For the average user (who in my opinion deserves the same speed, reliability, and redundancy that a heavy user would require); they are simply hooking their modems into the co-ax into the NIC; while relying on the firmware of the modem and how it is actually configured to retrieve the bootP, DHCP, on a broadcast level (the intervals between requests, the "7" day or more storage for IP leases, etc).
Now a machine configured like this lacks one thing. --well, a couple things. Mainly security for 'naturally' of letting your local subnet see you (whatever user pool your sharing-- if you dont have your own `gateway`)..

In a hypothetical scenerio, a router that allows frame-level blocking, combined with the gateway being turned into a local *nix box configured with something along the lines of iptables/chains so that the 'incoming' port can be forwarded to the machine would really be your only "proper solution". I'm sure someone will respond and say "my firewall blocks them all", well, think of it this way "In a game of baseball; you have a pitcher and a catcher; if you cant filter out what the pitcher will send to the catcher (the location thrown being the port); then the catcher must catch every baseball (packet) and say "yes or no" to accept or deny the connection."

I see a problem with this, one being if your a poor guy like me; your not going to have enough money for equipment to filter out what is even broadcasted to your machine *keep in mind most firewalls cost money too*; hence overruns, timeouts, etc due to the software firewall having to block/catch more than one user at time, taking up memory, taking up bandwidth, etc. -- plus there is a difference in methods in how a piece of software can filter, a peice of hardware, and a router and/or switch VLAN. -- and yes; I know I've strayed from the subject-- but more or less because I have had e-mail fail from publically known blocklists being used, the SMTP recievers possibly being down, or this particular maybe being blacklisted because of infections, who knows.

Then again, if you running linux; use an ip traffic monitor, under windows, use the command prompt and just leave [netstat -a] repeating to make sure your machine isnt an infected one mapping out pages of connections to users around your area or subnet.

Sorry for the long post; I just feel that there are more than 1 factors to this, and there is more than 1 solution to this spamming epidemic that affects EVERYONE.

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tokillyou

join:2004-05-31
Bossier City, LA

Re: Blacklisting Madness

If all of the hackers and crackers got involved I bet they could create some usefull software that can crash a spammers workstation. I myself if I could create something that would do it I would definately use it aginst the spammers.
Forums » Fun With Blacklists


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