SMTP Port Blocking: Success or Failure?

We are considering filtering outbound SMTP traffic from our ISP customers, except from our own mail servers, to help reduce the amount of spam originating from our network. How successful/unsucessful has implementing outbound SMTP filtering done in stopping or slowing down spam from your network?

RE: Graphing Peering

Andrew, You could probably whip something up with a shell script, and pipe the results to something like cacti (www.cacti.net). Cacti is one of the easiest utilities I've worked with to graph other types of data besides bits in/out. Check it out. = TC -Original Message- From: andrew

Cisco 7513 Bandwidth Points

Hello, We are moving from a Cisco 7206 to a 7513, and I was wondering if we will be limited by bandwidth points on the 7513 (as we are with the 7206). From the sparse documentation I've found so far, it doesn't appear that this limitation exists in the 7513, correct? Off-list replies are

Open-Source Network Management Tools

I'm looking for open-source alternatives for network management, such as Nagios or Big Brother. We are currently using WhatsUp Gold, and would like to move to something more flexible (and not running on a Windows platform). Something that has email/paging capabilities, and can process SNMP traps

RE: Google?

http://money.cnn.com/2004/07/26/technology/google_site/index.htm -Original Message- From: Eric Brown [mailto:[EMAIL PROTECTED] Sent: Monday, July 26, 2004 11:14 AM To: [EMAIL PROTECTED] Subject: RE: Google? Google is failing on everything for me. Other search engines like a9 seem to

Barracuda Networks Spam Firewall

Doing evaluations on anti-spam, anti-virus solutions, and ran across this: http://www.barracudanetworks.com/ Looks like a good box -- even won an Editor's Choice award from Network Computing recently. Does anyone on list have any experience with these boxes? If so, how are they with false

More on Anti-Spam/Anti-Virus Solutions

Title: More on Anti-Spam/Anti-Virus Solutions Thanks to everyone who has responded regarding the Barracuda Network Spam Firewall. They look like very low cost but very powerful boxes. We are in the process of choosing an anti-spam/anti-virus solution for our current email enviroment

RE: Cisco website www.cisco.com 403 forbidden?

Nope. It's horked. = TC -Original Message- From: Jay Hennigan [mailto:[EMAIL PROTECTED] Sent: Monday, March 15, 2004 2:19 PM To: [EMAIL PROTECTED] Subject: Cisco website www.cisco.com 403 forbidden? Is it just me that they don't like? -- Jay Hennigan - CCIE #7880 - Network

RE: Cisco website www.cisco.com 403 forbidden?

Al Qaeda packets? -Original Message- From: Laurence F. Sheldon, Jr. [mailto:[EMAIL PROTECTED] Sent: Monday, March 15, 2004 2:25 PM To: [EMAIL PROTECTED] Subject: Re: Cisco website www.cisco.com 403 forbidden? Jay Hennigan wrote: Is it just me that they don't like? I've seen one or

T1 Customer CPE Replacement?

Title: T1 Customer CPE Replacement? Hello, We're looking for a good replacement for fractional T1 customers with Cisco 1600- 1700-series routers as their CPE. They are good routers, but the ongoing support costs are an issue, and we need to replace them ASAP. Someone had mentioned several

Cisco: limit number of DHCP addresses per VC?

Title: Cisco: limit number of DHCP addresses per VC? Question for the list: Cisco introduced a command in 12.3T to limit DHCP leases on ATM unnumbered interfaces (ip dhcp limit lease per interface). This feature works fine on our 7206VXR, but my problem is that this is a global command. The

Lucent APX / Data Filter Question

Hello, Would someone familiar with the Lucent APX and filtering contact me off-list? Thanks, = TC -- Tom Claydon, IT/ATM Network Engineer Dobson Telephone Company phone: (405) 391-8201 cell: (405) 834-0341

Lucent APX1000

Does anyone here have experience with the APX1000? We just got one of these beasts (to replace two AS5300's), and I need some help on OSPF configurations (specifically, how to integrate it into our Cisco-based network). Thanks, = TC -- Tom Claydon, IT/ATM Network Engineer Dobson Telephone

RE: california quake

If a fault line slips, then the terrorists have already won. -Original Message- From: Gerald [mailto:[EMAIL PROTECTED] Sent: Monday, December 22, 2003 1:34 PM Cc: [EMAIL PROTECTED] Subject: Re: california quake On Mon, 22 Dec 2003, Scott Granados wrote: Apparently there was just a

Bandwidth Control Question

Title: Bandwidth Control Question Hello, A customer of ours in the next building would like 6M of Internet bandwidth from us, so we would wire a DS3 between the two buildings for connectivity. The question is: how to we control the amount of bandwidth that we give them? Could we use rate

RE: Bandwidth Control Question

Title: RE: Bandwidth Control Question Thanks to everyone who responded. Looks like I'm going to have to invest in a PA-MC-2T3+ card for the 7206...I have at least four PA-MC-T3 cards, and they're not going to work the way I want them to (unless I rate-limit them). Thanks,   = TC   -- Tom

RE: Bandwidth Control Question

Hi Mark, Yes, it's a point-to-point link. = TC -Original Message- From: Mark E. Mallett [mailto:[EMAIL PROTECTED] Sent: Friday, December 19, 2003 10:36 AM To: Claydon, Tom Cc: '[EMAIL PROTECTED]' Subject: Re: Bandwidth Control Question On Fri, Dec 19, 2003 at 10:24:36AM -0600

RE: Bandwidth Control Question

Yep. There's plenty of fiber between the two buildings, so we may go that route. Anyone know if there's any easy way to limit bandwidth on the PA-POS-OC3 adapters? Sounds like another job for rate limiting to me... = TC -Original Message- From: David Lesher [mailto:[EMAIL PROTECTED]