similar to: Prevent unauthenticated PDC users to login locally

Asterisk Project Security Advisory - AST-2008-003 +------------------------------------------------------------------------+ | Product | Asterisk | |--------------------+---------------------------------------------------| | Summary | Unauthenticated calls allowed from SIP channel | | | driver

Asterisk Project Security Advisory - AST-2008-003 +------------------------------------------------------------------------+ | Product | Asterisk | |--------------------+---------------------------------------------------| | Summary | Unauthenticated calls allowed from SIP channel | | | driver

modern syslog daemons (including rsyslog, which is default on just about every linux system) allow you to filter efficiently on the message contents, not just the severity, so you can opt to throw out the messages you don't want. I advocate for a slightly different way of dealing with it, filter these messages from your main logstream, but put them into either a script directly, or a

Hi list, i noticed from the cli my asterisk box is accepting unauthenticated calls how can i prevent this? CLI: -- Accepting UNAUTHENTICATED call from 192.168.0.2: > requested format = gsm, > requested prefs = (), > actual format = ulaw, > host prefs = (g729|ulaw|alaw), > priority = mine -------------- next part -------------- An HTML

I am seeing a recent increase in SSH harvesting attempts and brute forcing in the log of my system. I'm interested in opening up some discussion around what OpenSSH can do itself to counter measure against: * DoS attack where too many unauthenticated connections are open. I'm not interested in stopping the professional saboteur but the casual script kiddie (to use IRC terms) from

Dear OpenSSH developers, a publicly accessible sshd on port 22 generates a lot of log clutter from unauthenticated connections. For an exemplary host on a university network, sshd accumulates 5~20k log lines on a single day (more than 90% of the total amount of syslog lines). That is despite the host having a restricted configuration (no SSH password authentication, firewall rate limit for

> On 18 May 2018, at 20.19, David Hubbard <dhubbard at dino.hostasaurus.com> wrote: > > Hello, given the 2015 revision date, I was curious if anyone can confirm https://wiki2.dovecot.org/Timeouts is still accurate where the 'before login' IMAP timeout remains hard coded? > > We're having an issue where blocks of IP's from China and similar locations are

Hello, given the 2015 revision date, I was curious if anyone can confirm https://wiki2.dovecot.org/Timeouts is still accurate where the 'before login' IMAP timeout remains hard coded? We're having an issue where blocks of IP's from China and similar locations are crawling IP ranges trying common login credentials, and hanging the connections open in the process. We have clients

Hi I am vinod, I want to set up simple Samba PDC using tdbsam password backend. samba is installed on fedora 8 GNU/Linux. my network is about 30 windowsXP Pro. SP-2 static IP addressed machines. total no users about : *40* my network is : *192.168.1.* samba server is *: 192.168.1.10* windowsXP Pro. SP-2 clients : *192.168.1.11* to *192.168.1.40 *I want the users to be able to

On 18.03.23 14:34, David Lang wrote: > modern syslog daemons (including rsyslog, which is default on just > about every linux system) allow you to filter efficiently on the > message contents, not just the severity, so you can opt to throw out > the messages you don't want. > > I advocate for a slightly different way of dealing with it, filter > these messages from

On trying to run a rake task via crontab, I''m getting the following error: rake aborted! 550 Cannot receive from specified address <help-+zpghU0kKgY@public.gmane.org>: Unauthenticated senders not allowed /mnt/voylla-production/shared/bundle/ruby/1.9.1/gems/mail-2.3.3/lib/mail/network/delivery_methods/smtp.rb:129:in `block in deliver!''

Is there a way to synchronize changing a user's WindowsXP password with the smbpasswd? I configured a basic Samba server (3.0.10) with password encryption enabled. When I created the smbpasswd file, I used the same username:passwords as the WindowsXP user accounts. After the initial connection, users can login and map the network shares seamlessly. Users are required to change they

hi, does anybody know about the following situatuion and it's solution ? we configured an samba3 as pdc - sure in the way it was often described. but if we login on a windowsXP as domainmember (member of the admin group) it seems like we do not really have full administrator-permissions. we can add useres and can do some other tasks only an administraor is allowed to do. but some stuff

Is there a way to synchronize changing a user's WindowsXP password with the smbpasswd? I configured a basic Samba server (3.0.10) with password encryption enabled. When I created the smbpasswd file, I used the same username:passwords as the WindowsXP user accounts. After the initial connection, users can login and map the network shares seamlessly. Users are required to change they

Hi all, I'm very close to having a working setup after blundering through a couple of typing errors that cost me several days of my life, with the following config: Samba 3.0.14a as a PDC Suse 9.2 Professional LDAP (eDirectory 8.7.3) passwd backend Idealx scripts Windows XP SP1 I can connect to any of the samba shares just fine using any of the users I've created, from XP and from linux

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To radically cut down on SSH log spam you can also hide it completely behind a firewall, and allow access only by some port knocking sequence. I quite like having a process listen on port 53 and wait for a dns query containing a totp string to grant (temporary) access; that's a 2fa, and doing a "host 123456. my-ip" is easily automated in a shell script as well...

On 10.06.23 11:19, Carsten Andrich wrote: > For the time being, I've deployed a quasi-knocking KISS solution that > sends an unencrypted secret via a single UDP packet. Server side is ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > realized entirely with nftables ... frankly, for that reason, I like fwknop (in my case, straight from OS repos) better ... I'd still have to see fwknopd exit

I guess you might find fail2ban useful. It scans logfiles (like /var/log/sshd.log), and when it sees too many authentication failures from an IP address (or network range) it can issue commands to drop any further attempts via a firewall. By having it read its own logfile it's possible to have repeated offenders be cut out for longer and longer time spans.

Hi, Is there a way to print a message before the login prompt or after the login prompt but before the password prompt? This way unauthenticated users can see a small message (like "Hello!"). I looked through the source for version 4.2 and couldn't find where the login strings are constructed and sent (except in the client software portion). Maybe all strings (like "login: