Re: Securing email by inhibiting urls
Kurt Buff <[email protected]> Thu, 11 Aug 2011 07:15:48 -0700
| Newsgroups | gmane.comp.security.firewalls.wizards |
|---|---|
| Message-ID | <CADy1Ce4tSkuCCbnS7EjP3jwC36HP=DkV3NCM9Zz2d4i7eHB+8Q@mail.gmail.com> |
Which is why I use a mail gateway for $WORK. On Thu, Aug 11, 2011 at 04:41, Chris <[email protected]> wrote: > Should have mentioned that this is a MS Exchange environment. Spam filters are MS based currently MS based but that’s up for grabs if we can replace them with something that provides the same functionality in place now. Currently using Brightmail and other than disabling/replacing urls in email it is working pretty good. > > -----Original Message----- > From: Kurt Buff [mailto:[email protected]] > Sent: Thursday, August 11, 2011 1:32 AM > To: [email protected]; Firewall Wizards Security Mailing List > Subject: Re: [fw-wiz] Securing email by inhibiting urls > > mimedefang comes to mind. > > http://mimedefang.org > > On Mon, Aug 1, 2011 at 11:46, Chris <[email protected]> wrote: >> A company I work for has been having great difficulty in securing against >> email attacks. So far we have disabled access to webmail, implemented >> rules and processes to block freemail services like hotmail etc until the >> sender registers the address and of course a spam filter (BrightMail). >> Attachment filtering is pretty strict as well. >> >> >> >> The threat that presents the biggest challenge is url links in emails. The >> common method of attack is an email from somedomain.com where they change >> one character or otherwise make the address look valid (ie: >> [email protected] or [email protected] etc). >> >> >> >> I was looking for a way to spot and block hyperlinks but it looks like the >> only option I have is to filter on these and send them to a spam bin. I’d >> rather yank the offending hyperlink and replace it with a message of some >> sort. Unfortunately BrightMail doesn’t offer that capability. >> >> >> >> Any products that do this or ideas on a solution? >> >> >> >> Thanks >> >> _______________________________________________ >> firewall-wizards mailing list >> [email protected] >> https://listserv.icsalabs.com/mailman/listinfo/firewall-wizards >> >> > > _______________________________________________ firewall-wizards mailing list [email protected] https://listserv.icsalabs.com/mailman/listinfo/firewall-wizards