nanog mailing list archives
Re: Stopping open proxies and open relays
From: "Gregh" <chows () ozemail com au>
Date: Mon, 9 Feb 2004 22:58:13 +1100
----- Original Message ----- From: "Adi Linden" <adil () adis on ca> To: <nanog () merit edu> Sent: Saturday, February 07, 2004 3:43 PM Subject: Stopping open proxies and open relays
I am looking for ideas to stop the spam created by compromised Windows PC's. This is not about the various worms and viruses replicating but these boxes acting as open relays or open proxies. There are valid reasons not to run antivirus software, coupled with clueless users, this results in machines that SPAM again just a few hours after having been cleaned.
Optus in Australia have taken the line of blocking port 25 to anything at all excepting contact with their own servers. Seems to work. Some pissed off customers with their own smtp progs etc but my guess is that this would fit your bill. Greg.
Current thread:
- Stopping open proxies and open relays Adi Linden (Feb 06)
- Re: Stopping open proxies and open relays Rubens Kuhl Jr. (Feb 06)
- Re: Stopping open proxies and open relays Gregh (Feb 09)
- Re: Stopping open proxies and open relays William Allen Simpson (Feb 09)
- <Possible follow-ups>
- RE: Stopping open proxies and open relays Michel Py (Feb 06)
- Re: Stopping open proxies and open relays Dr. Jeffrey Race (Feb 06)
- RE: Stopping open proxies and open relays Michel Py (Feb 06)
- RE: Stopping open proxies and open relays Michel Py (Feb 06)
- RE: Stopping open proxies and open relays Vivien M. (Feb 06)
- RE: Stopping open proxies and open relays Adi Linden (Feb 06)
- RE: Stopping open proxies and open relays Vivien M. (Feb 06)
- RE: Stopping open proxies and open relays Randy Bush (Feb 06)
- Re: Stopping open proxies and open relays Valdis . Kletnieks (Feb 06)
- RE: Stopping open proxies and open relays Vivien M. (Feb 06)