nanog mailing list archives
Re: Customer-facing ACLs
From: Adrian Chadd <adrian () creative net au>
Date: Mon, 10 Mar 2008 23:53:08 +0900
Do bots try brute force attacks on Telnet and FTP? All I see at my firewall are SSH attacks and spam. But sure, if there's a lot of Telnet abuse block 23 too; I think it's used about as rarely by "normal" customers as SSH is.Depending on the ip space I find FTP brute force attacks 10 times more common than SSH attacks. There really isn't a blanket rule you can impose. On a different note, unless you clearly advertise that you're offering filtered services I don't really find the practice ethical - and no a tiny line in the TOS doesn't really cut it IMHO. That doesn't mean it can't be done, simply spin the imposed ACL as a value-add and that your customers are now on a "safer internet".
Does anyone have any handy links to actual raw data and papers about this? I'm sure we've all got our own personal datapoints to support automated network probes but I'd prefer to stuff something slightly more concrete and official(!) into the Wiki. Adrian
Current thread:
- Re: NANOG laptops (was Re: Customer-facing ACLs), (continued)
- Re: NANOG laptops (was Re: Customer-facing ACLs) Bill Woodcock (Mar 09)
- Re: NANOG laptops (was Re: Customer-facing ACLs) Al Iverson (Mar 09)
- Re: NANOG laptops (was Re: Customer-facing ACLs) Marshall Eubanks (Mar 09)
- Re: NANOG laptops (was Re: Customer-facing ACLs) William Allen Simpson (Mar 09)
- Re: NANOG laptops (was Re: Customer-facing ACLs) Mark Prior (Mar 10)
- Re: NANOG laptops (was Re: Customer-facing ACLs) Bill Woodcock (Mar 09)
- Re: Customer-facing ACLs Justin Shore (Mar 09)
- Re: Customer-facing ACLs Adrian Chadd (Mar 08)
- Re: Customer-facing ACLs Justin Shore (Mar 08)
- Re: Customer-facing ACLs Chris Marlatt (Mar 10)
- Re: Customer-facing ACLs Adrian Chadd (Mar 10)
- Re: Customer-facing ACLs Justin Shore (Mar 10)
- Re: Customer-facing ACLs Marshall Eubanks (Mar 18)
- Re: Customer-facing ACLs Jon Lewis (Mar 18)
- Re: Customer-facing ACLs Adrian Chadd (Mar 18)
- Re: Customer-facing ACLs Justin Shore (Mar 07)
- Re: Customer-facing ACLs Adrian Chadd (Mar 07)