similar to: Port 631 closed, not hidden

I''ve installed this fine software on my home network and am very pleased with the ease of installation and especially the documentation. My firewall box masq''s a private net via dialup modem. Configuration is almost exactly as described in the two-interface example. My question regards the result of a "internet test scan" that I found via google search...when I run

Guys, After i got the port forwarding and everything else working as per my previous post, i ran a shields-up scan from grc.com on the firewall, i.e. a scan of the external interface. I m a little suprised at the results. On the firewall i have postfix running ( smtp port 26 ), openssh ( ssh port 22) and port forwarding of port 85 (on the firewall ) to an internal host. The Shields-Up scan

Having been accomodating about it in the past, the technical geniuses at Comcast have permanently blocked port 25, separating me (at my home office) from my employer's e-mail server. What can be done on the server side to keep Postfix listening on 25 _and_ accept my connections on some other port? Is there a Postfix solution? iptables maybe? Miark

My wife's office server was compromised today. It appears they ssh'ed in through account pcguest which was set up for Samba. (I don't remember setting up that account, but maybe I did.) At any rate, I found a bazillion "ftp_scanner" processes running. A killall finished them off quickly, I nuked the pcguest account, and switched ssh to a different port (which I normally do

What's the best package for a plain-jane pop3 server? Miark

What are your opinions on pcre vs regexp for header_, body_, and mime_checks in Postfix? I looked at the regexp_table and prce_table man pages, and see almost no difference other than the available flags. Miark

Dear All: I have several boxes that up and running just great, then we changed internet equipment due to a lightning strike, now all my inbound IAX connections (iax2 show peers) have unknown status. If I log into the remote boxes, it says "Request sent." The authentications haven't changed at all, and all the iax.conf settings are correct. It looks like a firewall issue, but

My LAN is behind a Netgear router, which does NAT. On the CentOS server I have fail2ban running. This morning my router reported 3 different IPs attempting to send UDP packets to port 38950, Since each address is only seen 4-5 times, I presume that fail2ban took over after that. GRC reports that ports are stealthed (port 143 was open, but is now closed), but then: Unsolicited Packets:

On http://grc.com/default.htm I've found some bad news on the above service. It's true that if your windows network expose shared resources AND it is connect to Internet it can be bombed by hacker's attacks ? If yes, how to prevent it thru Linux-Samba ?

On Tuesday 23 December 2008 15:38:17 Warren Young wrote: > Michael Simpson wrote: > >> GRC reports that ports are stealthed > > > > Try www.auditmypc.com or nmap-online.com rather than grc to look for open > > ports > > What advantages do they have, in your opinion? > > >> there a better way than opening port 143? > > > > ssh tunnelling?

I think you need to increase verbose output and search in /var/log/asterisk/full for any error message related to IAX2 registration or simil. 2017-06-05 17:12 GMT-03:00 <thelma at sys-concept.com>: > No, I don't think it is IP table issue, I've not upgraded dd-wrt for a > while and it was zoiper was working OK with my previous version of > asterisk. > > After upgrade

Is CentOS pronounced as a word, or as cent-oh-es? Miark

I've seen several references to running VMWare under CentOS, but does anybody know how well Parallels runs under CentOS? On a related note, now that Zen is as mature as it is, are commercial VMs really much better than Zen? Miark

I have a webpage feedback form that uses a Perl script to send e-mails with "| /usr/sbin/sendmail -t". It works just fine, but SELinux is complaining about it: SELinux is preventing /usr/sbin/postdrop (postfix_postdrop_t) "getattr" to pipe:[41117] (httpd_t) I'm a SELinux newb so I don't know what (if anything) to do about it. Suggestions? Miark

Using Shorewall v1.2, and testing the firewall using scan.sygate.com, I am informed that several ports (web (80), ident (113) and DCE locator (135) are ''closed'' rather than ''blocked''. All other ports show as blocked or ''stealthed''. I haven''t set up any rules or policies that have anything to do with 80, 113 or 135. Is this

Hi Guys, My Debian box has been hacked a few days ago using an OpenSSH vulnerability. Subsequently my box was used for sending spam and as a hacking platform (according to my ISP). I was running a fairly recent version of OpenSSH (3.9p1). I reinstalled my box (now with 3.8p1 as supplied by Debian Stable), and started tcpdump to see if I would get lucky. I DID! The aut.log file shows the

Hello, I just made available a beta version of a port scan detector that I''ve been working on. The program, called Abacus Sentry, is a port scan/probe detector that offers what I think are a number of unique and useful features: - Runs on TCP or UDP sockets. Configurable by the user to bind to multiples of sockets for increased detection coverage. - Adjustable scan detection value with

Hi all, I appologise in advance if this is a little OT, but I am building a box that will serve as firewall and router for a small ''internet cafe / netcafe'' and am using CentOS... So here it is: What are the best tools to be used for keeping the potential script kiddies from ''harming the Internet'' :) ? I specifically want to be able to detect and prevent

--nextPart2699335.H7BBWTdPIb Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hello :) After upgrading recently from Woody to Sarge (which went fairly well) I now= =20 have trouble with logcheck. I have been unable to track down a solution. Logcheck runs perfectly through the week until Sunday when logrotate does

help!....im really confused, ... i created the user "Stealth" on my Linux redhat 7.3 machine and when i configure my smb.conf file, for path = /home/Stealth, the machine would show up in "Computers Near Me" on my other windoez 2000 machine, but would not accept any passwords to the [share], when i run smbpasswd -a Stealth i get this......... getsmbfilepwent: malformed