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  • Freebsd jail for an small company - checklist - what shouldn't forget

    - by cajwine
    Looking for an checklist for an "small company freebsd/jail server". Having pretty common starting point: FreeBSD jail (remote/headless) for the company: public web, email, ftp server, and private (maybe in the future partially public) wiki (foswiki) 4 physical persons, (6 email addresses) + one admin - others will never use ssh) have already done usual hardening on the host side (like pf, sshguard etc). my major components are: dovecot, exim, apache22, proftpd, perl5.14. Looking for an checklist, what I shouldn't forget. My plan: openssl self-signed certificates for exim, dovecot and proftpd (wildcard keys) openssl self-signed certificate for apache (later will go for "trusted-signed" key) My questions are: is is an "good practice" having one pair of wildcard SSL-certificates for many programs? (exim, dovecot, proftpd) - or should I generate one key for each service? should I add all 4 persons as standard (unix) users, or I should go with virtual users? Asking because: have only small count of users, and it is more simple to configure everything (exim, dovecot) for local users ($HOME/Maildir), plus ability to set $HOME/.forward/vacation and etc. is here some (special) things what I should consider? (e.g. maybe, in the future we want setup our own webmail - will make this any difference?) any other recommendation? Thank you, hoping that this question fit into the http://serverfault.com/faq under the: Server and Business Workstation operating systems, hardware, software Operations, maintenance, and monitoring Looking for an checklist, but please explain why you're recommending it. See Good Subjective, Bad Subjective. related: What's your suggested mail server configuration for a FreeBSD server?

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  • Linux port-based routing using iptables/ip route

    - by user42055
    I have the following setup: 192.168.0.4 192.168.0.6 192.168.0.1 +-----------+ +---------+ +----------+ |WORKSTATION|------| LINUX |------| GATEWAY | +-----------+ +---------+ +----------+ 192.168.150.10 | 192.168.150.9 +---------+ | VPN | +---------+ 192.168.150.1 WORKSTATION has a default route of 192.168.0.6 LINUX has a default route of 192.168.0.1 I am trying to use the gateway as the default route, but route port 80 traffic via the VPN. Based on what I read at http://www.linuxhorizon.ro/iproute2.html I have tried this: echo "1 VPN" >> /etc/iproute2/rt_tables sysctl net.ipv4.conf.eth0.rp_filter = 0 sysctl net.ipv4.conf.tun0.rp_filter = 0 sysctl net.ipv4.conf.all.rp_filter = 0 iptables -A PREROUTING -t mangle -i eth0 -p tcp --dport 80 -j MARK --set-mark 0x1 ip route add default via 192.168.150.9 dev tun0 table VPN ip rule add from all fwmark 0x1 table VPN When I run "tcpdump -i eth0 port 80" on LINUX, and open a webpage on WORKSTATION, I don't see the traffic go through LINUX at all. When I run a ping from WORKSTATION, I get this back from some packets: 92 bytes from 192.168.0.6: Redirect Host(New addr: 192.168.0.1) Vr HL TOS Len ID Flg off TTL Pro cks Src Dst 4 5 00 0054 de91 0 0000 3f 01 4ed3 192.168.0.4 139.134.2.18 Is this why my routing is not working ? Do I need to put GATEWAY and LINUX on different subnets to prevent WORKSTATION being redirected to GATEWAY ? Do I need to use NAT at all, or can I do this with routing alone (which is what I want) ?

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  • Ubuntu server crashes; need help figuring how to figure out why

    - by neezer
    I have a 768 Slice at slicehost.com running Ubuntu Server 8.04.2 LTS (hardy) with a LAMP stack on it that periodically crashes, though why I am not sure. From what I can tell, there is a process that basically goes rogue and consumes all the memory on the slice, suffocating all the other programs running until the whole thing comes to a grinding halt, and I have to do a hard reboot of the slice to get it back up and running again. I can't detect any pattern for this (it seems to happen about once a month, more or less). Here's a screenshot of my console during the last crash: I would assume that a possible cause might a PHP script or an apache configuration rule that might cause the crash if triggered? How would I be able to find out which one is the offending one? I've checked and rechecked all my PHP scripts, and running them doesn't seem to trigger the crash. I've also been able to log on to my system during a crash and see what's running (with top), but I can't tell how the offending process was started, so I can't trace the root of the problem! I know my description is overly generic, but unfortunately my expertise in tracking down the source of these glitches is very limited. If you need any additional information about my system in order to help me figure this out, please let me know in the comments, and I will append it to the question. My only other lead as to the culprit here is Wordpress, which we have installed on this server. Here are the details: Wordpress 3.0.3 with the following plugins installed and activated: Addmarx - Bookmark/Share/Email Dropdown, Akismet, All in One SEO Pack, Animated Banners, Automatically publish highlights of any website, directly to your Blog, Broken Link Checker, CMS Dashboard, Collapsing Categories, Status Updater, SubHeading, Ultimate Google Analytics, VastSubCat, WP-CMS Post Control, and WP Super Cache

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  • Slow browsing through IE on Windows Server 2012

    - by Volodymyr
    We've run into strange issue on the freshly installed servers. H/W: IBM server X3550 M4 7914; OS: Windows Server 2012 Std. Then we try to browse on the servers thru IE, not all sites are opened or it takes too long time to open the page, i.e. very few of them can be opened. Local FW are disabled. Servers are in a new subnet and traffic is allowed for it. VLAN is configured properly Another Windows Server 2012 host is running OK and Internet access works fine, but it is VM running on Hyper-V 2012. No proxy is used on the network. At the same time, if one tries to establish telnet session to any site on 80/443 ports - it does work. Google works as well. I've tried to configure single Qlogic adapter to check if the issue remains - it does. Teaming is configured with the means of QLogic, not by built-in functionality. IE Enhanced Security is disabled. IE settings were reset, more than once. Why would certain sites work while others not - Idk. I also tried to disable ecncapability and restart server - no luck netsh int tcp set global ecncapability=disabled Any thoughts? UPD1 VMQ is disabled. Servers are not running Hyper-V. UPD2 Servers were rebuilt from scratch, got a mail a few mins ago. Issue still remains. Teaming is now configured with the means of Windows Server 2012.

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  • Why is it a bad idea to use a customer email as the from address

    - by Crab Bucket
    I've got an application that emails users once they have filled in a form. It uses a [email protected] as a from address. The customer wants it to use the email from the form as the from address which could be anything. I have been told that this is a bad idea due to spoofing/blacklisting and spam. I feel really vague about the exact reason about why this is a bad idea particularly as i've got to try to counsel the client out of this. Can someone explain to me why this is a bad idea. Interestingly the client has used a gmail account as the from address as a demo which not only works fine but has enabled the application to start sending emails (it wouldn't do it before with an email which was [email protected]). Erm - what is going on. I'm told one thing and the opposite works. Sorry - i know this is basic but I could find anything on a google search. Largely I think because I'm having trouble even framing the question. EDIT Thank you everyone - great answers. Interestingly the server sending the email and the mail box that it is going to are both behind the same firewall so the client says they are unconcerned about spam. Oh well.

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  • iptables firewall rules not allowing ssh from lan to DMZ

    - by ageis23
    Chain INPUT (policy ACCEPT) target prot opt source destination REJECT tcp -- anywhere anywhere tcp dpt:www reject-with tcp-reset REJECT tcp -- anywhere anywhere tcp dpt:telnet reject-with tcp-reset ACCEPT 0 -- anywhere anywhere state RELATED,ESTABLISHED DROP udp -- anywhere anywhere udp dpt:route DROP udp -- anywhere anywhere udp dpt:route ACCEPT udp -- anywhere anywhere udp dpt:route logdrop icmp -- anywhere anywhere logdrop igmp -- anywhere anywhere ACCEPT udp -- anywhere anywhere udp dpt:5060 ACCEPT 0 -- anywhere anywhere state NEW logaccept 0 -- anywhere anywhere state NEW ACCEPT 0 -- anywhere anywhere ACCEPT 0 -- anywhere anywhere ACCEPT 0 -- anywhere anywhere logdrop 0 -- anywhere anywhere Chain FORWARD (policy ACCEPT) target prot opt source destination REJECT 0 -- 192.168.0.0/24 192.168.2.0/24 reject-with icmp-port-unreachable ACCEPT tcp -- choister 192.168.2.142 tcp dpt:ssh state NEW REJECT 0 -- 192.168.0.0/24 192.168.3.0/24 reject-with icmp-port-unreachable ACCEPT gre -- 192.168.1.0/24 anywhere ACCEPT tcp -- 192.168.1.0/24 anywhere tcp dpt:1723 ACCEPT 0 -- anywhere anywhere ACCEPT 0 -- anywhere anywhere ACCEPT 0 -- anywhere anywhere ACCEPT 0 -- anywhere anywhere TCPMSS tcp -- anywhere anywhere tcp flags:SYN,RST/SYN TCPMSS clamp to PMTU lan2wan 0 -- anywhere anywhere ACCEPT 0 -- anywhere anywhere state RELATED,ESTABLISHED logaccept tcp -- anywhere choister tcp dpt:www TRIGGER 0 -- anywhere anywhere TRIGGER type:in match:0 relate:0 trigger_out 0 -- anywhere anywhere logaccept 0 -- anywhere anywhere state NEW logdrop 0 -- anywhere anywhere The ssh server I'm trying to connect to is in the DMZ(192.168.0.145). It's mainly used as a web server. I need access to it from my room 192.168.2.142. I don't get why ssh can't forward onto the 192.168.2.0 subnet? I'm sure it's the reject rule that causing this because it works without it.

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  • How can I configure myhostname to work with Postfix?

    - by John Kelly Ferguson
    I'm going through the process of setting up a Discourse forum on my server (Ubuntu 12.04 x64) and am getting stuck at the point where I have to configure mailers. I'm following Discourse's instructions and am stuck trying to configure postfix for Mandrill. It is says to check my fully-qualified domain name by typing hostname -f When I enter in hostname -f, I get localhost. As far as I know, entering in hostname -f should return mydomainname.com. When I just enter in hostname, I get mydomainname which is correct because that is what I set my hostname to in /etc/hostname. Looking at some of my other settings, my /etc/hosts file reads: 127.0.0.1 localhost mydomainname # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters And in my /etc/postfix/main.cf file, I have myhostname set like this: myhostname = mydomainname.mydomainname.com (Should this be myhostname = mail.mydomainname.com instead?) And mydestination is the following: mydestination = mydomainname.com, localhost, localhost.localdomain, localhost I'm not that familiar with configuring hostnames. I've been reading Postfix's instructions, but haven't been able to figure it out yet. Any help on how to get this to work would be greatly appreciated. Thanks.

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  • Implementing emailing (bulk & event based) features for my website.

    - by Kabeer
    Hello. For my upcoming social networking website, I am looking for suggestions on the best way to implement emailing. Here are some of my requirements and constraints: Requirements: - Should be able to send emails based on events (new registrations, change password, etc.), promotions (advertisements based on user consent), bulk mails (newsletters), reminders (profile updates), etc. I hope I got the point through. - Should be able to process faults (incorrect email address, mail-box full, etc) - User initiated invites (inviting friends to connect) Constraints: - As of now I am looking at Godaddy for hosting. Subsequently I shall move to, may be Amazon Cloud. Godaddy seems to be excruciatingly conservative (not bad always) when it comes to the ability to send email. - My tests on Godaddy so far have been discouraging. There is limit to no. of emails I can send and sometimes if emails carries special characters it throws strange exceptions like there was a virus affected attachment (even though I hadn't attached a thing). The replies from Godaddy support have been equally funny. My intent is not to portray Godaddy as wrong but I am looking for a work-around that frees me from said constraints. I am looking for a mechanism / service that is either free of very cost effective. I wonder how other sites address this. Mine is a .Net / Windows based application.

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  • Postfix + Exchange + ActiveDirectory; How to mix them

    - by itwb
    My client has got many sub-offices, and one head office. The headoffice has a domain name: business.com All users in the many sub-offices need to have a headoffice email address: [email protected] Anyone not in the head office will need the email forwarded to an external email address. All users in the head office will have their email delivered to Microsoft Exchange. Users are listed in Active Directory under two different OU's: HeadOffice or SubOffice. Is this something able to be configured? I've done some googling, but I can't find any examples or businesses set up this way. Edit: Postfix will accept all email, will need to determine to forward the email to an external account or alternatively have it delivered to MS Exchange. I've done some reading about MS Exchange and that you can 'mail-enable' contacts for forwarding - but I don't know if each AD account requires an Exchange CAL? The end goal is to forward email to external accounts to sub offices or accept email for head office. Maybe I don't need to worry about Postfix to perform this task..... http://www.windowsitpro.com/article/exchange-server-2010/exchange-server-licensing-some-of-your-questions-answered "What about client access licenses (CALs)? You need one CAL per user who will connect to Exchange. Although it might not be 100 percent precise, I prefer to think of it as one CAL per mailbox; there are exceptions for users outside your organization, automated tools that use mailboxes, and so on. Exchange doesn't enforce this limit, so it's on you to ensure that you have the correct number of CALs for the set of clients you support."

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  • SSD suddenly full

    - by Daniel
    Today the hard drive of our server was suddenly full. The disk usage always stayed around 50 % in the weeks and months before (old data is regularly expunged from the server). I deleted 10 GB of files in /tmp, which strangely freed 51 GB. Here is what I did: root@***:~# df -h Dateisystem Size Used Avail Use% Eingehängt auf /dev/sda3 139G 137G 0 100% / tmpfs 3,9G 0 3,9G 0% /lib/init/rw udev 3,9G 116K 3,9G 1% /dev tmpfs 3,9G 0 3,9G 0% /dev/shm /dev/sda1 985M 25M 910M 3% /boot root@***:/var# du -hs * 3,3M backups 438M cache 9,4G lib 4,0K local 12K lock 76M log 24K mail 4,0K opt 88K run 184K spool 10G tmp 12K www root@***:/var/tmp# find -type f -print0 | xargs -0 rm root@***:/var/tmp# df -h Dateisystem Size Used Avail Use% Eingehängt auf /dev/sda3 139G 81G 51G 62% / tmpfs 3,9G 0 3,9G 0% /lib/init/rw udev 3,9G 116K 3,9G 1% /dev tmpfs 3,9G 0 3,9G 0% /dev/shm /dev/sda1 985M 25M 910M 3% /boot Any explanation as to why deleting 10 GB in /tmp gave me back 51 GB on the disk? Could this point to an SSD failure? Are there any tools for Debian to test SSD health? I already have checked syslog. The first entry relating to this incidient is a mysql message: 1:22:02 [ERROR] /usr/sbin/mysqld: Disk is full writing... So I have absolutely no idea what caused this.

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  • BIND: forward 1st level zone

    - by raven
    First of all: sorry for the language, English is not my primary language. I have star-like DNS structure with many filials (more that 2): ^ | v filialNS_1.filial_1.city.local <---- ns.main.city.local <---- filialNS_2.filial_2.city.local ^ | v ns.mail.city.local is slave of all filials zones filialNS_1 is master of filial_1.city.local filialNS_2 is master of filial_2.city.local filialNS_N is master of filial_N.city.local I want to: serve DNS queries for xxx.filial_N.city.local with filialNS_N.filial_N.city.local forward all queries for xxx.xxx.xxx.local from filialNS_N to ns.main.city.local forward other queries to our provider's DNS on filial (or google-public-dns or anything else) FILIAL CONFIG named.conf zone "filial_1.city.local" { type master; file "/etc/namedb/dynamic/filial_1.city.local"; allow-update { key DHCP_UPDATER; }; allow-transfer { <ns.main.city.local IP address> }; }; zone "2.76.10.in-addr.arpa" { type master; file "/etc/namedb/dynamic/2.76.10.in-addr.arpa"; allow-update { key DHCP_UPDATER; }; allow-transfer { <ns.main.city.local IP address> }; }; zone "local." { type forward; forward only; forwarders { <ns.main.city.local IP address> }; }; nslookup server.filial_1.city.local - works fine nslookup server.main.city.local Server: 127.0.0.1 Address: 127.0.0.1#53 ** server can't find server.main.city.local: NXDOMAIN Where am I going wrong?

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  • Davical + LDAP + NTLM

    - by slavizh
    I have set up a Davical server on CentOS. I've configured it to use LDAP and the users use their usernames and passwords to authenticate to the Davical server. I am using Lightning as client software for calendaring. Using Lightning requires entering username and password everytime, so I decided to set NTLM. I want my users who are logging in the domain to use the calendar server trough Lightning without entering username and password. I've set up NTLM on the Davical server. But when a user trys to reach the calendar trough Lightning first the server asks for NTLM username and password and then ask for the LDAP username and password. It becomes something like double authentication. The problem is that NLTM requires domain\username and passowrd and Davical trough LDAP requires only username and password. So my questions are: Is there a way to change something in Davical so that Davical trough LDAP to requires domain\username and passwords authentication? That way may be trough NTLM the second authentication will proceed silently and the users will user Lightning without entering usernames and passwords Is there a way I can make this double authentication to become one and to use only NTLM? P.S. We have Samba domain with LDAP server and our users use Thunderbird for their mail and I want to put Lightning too. That way they will have calendar service. But I don't want they to enter username and password for the calendar every time they log in. I know they can save that password but that is not an option for my organization.

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  • [tcpdump] Proxy delegate refusing connexion ?

    - by simtris
    Hi guys, I'm a little disapointed ! My aim was to build a VERY simple smtp proxy under debian to handle mail from a port (51234) and forward it to the standard 25 port. I compile and install a "delegate" witch can handle easily that. It's working very well like that : delegated SERVER="smtp://anotherSmtpServer:25" -P51234 The strange thing is, it's working on my virtual test machine and on the dedicated server in local but I can't manage to use it trought internet. I test it like that. telnet [mySrv] 51234 Of course, no firewal, no deny host, no ined/xined, the service delegated is listening on the right port ... 2 clues : The port is answering trought internet with nmap as "51234/tcp open tcpwrapped" have a look at the tcpdump following : 22:50:54.864398 IP [myIp].1699 [mySrv].51234: S 2486749330:2486749330(0) win 65535 22:50:54.864449 IP [mySrv].51234 [myIp].1699: S 2486963525:2486963525(0) ack 2486749331 win 5840 22:50:54.948169 IP [myIp].1699 [mySrv].51234: . ack 1 win 64240 22:50:54.965134 IP [mySrv].43554 [myIp].auth: S 2485396968:2485396968(0) win 5840 22:50:55.243128 IP [myIp] [mySrv]: ICMP [myIp] tcp port auth unreachable, length 68 22:50:55.249646 IP [mySrv].51234 [myIp].1699: F 1:1(0) ack 1 win 46 22:50:55.309853 IP [myIp].1699 [mySrv].51234: . ack 2 win 64240 22:50:55.310126 IP [myIp].1699 [mySrv].51234: F 1:1(0) ack 2 win 64240 22:50:55.310137 IP [mySrv].51234 [myIp].1699: . ack 2 win 46 The part "auth" seems suspect to me but didn't ring a bell. I could certaily do with some help. Thx a lot !

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  • Multiheaded X.org with a single workspace-pool

    - by blauwblaatje
    I've got an idea for x.org/$randomwindowmanager in combination with a multiheaded setup, but I haven't figured out how it should work. Also I don't really know where to place the feature request. Now for the idea. I've been working with screen (wikipedia:GNU_Screen) for some years now. One thing I like about it, is the fact that I can get a multi-display mode (screen -x), so you can have multiple terminals all connected to the same screen. The fun thing about it, is that you can get 2 terminals with the same content and switch my onscreen layout, without moving the terminals. I admit, in screen it's not extremely useful, but I think for a wm it can be. Imagine this. You've got two monitors and 4 workdesks. On one workdesk I've got my IDE with code, on the second one I've got the output, on the third one I've got the documentation and on the forth one I've got my e-mail and IM clients. At one moment, I want my IDE and output on my monitors, another moment my code and documentation and Yet another moment my IM to consult a colleague and documentation or code. Finally my colleague comes to help me at my desk. I'd like it if we could both watch the same workdesk without him sitting on my lap, so I turn one monitor so he can see it better. It would be great if we could see the same thing that's on my monitor (exclude mousepointer). The thing with most WMs is that your workspaces on the two monitors are either separated or glued together. If they're separated, you can change workspaces on each monitor autonomous, but you can't exchange applications between monitors because they're different x-clients (iirc). If they're glued together (xinerama), you can exchange the applications, but when changing your workspace, the other monitors change too. So, what I'd like to know is this. Is this already possible or should I submit a feature request somewhere (and if so, where?)

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  • Exchange 2010 certificate errors

    - by Frederik Nielsen
    I have a problem with my newly setup Exchange environment for our hosted customers. First off, when configuring the outlook client, it gives a certificate warning although the certificate has been bought and setup. I am using a setup like this: autodiscover.CUSTOMERDOMAIN.TLD CNAME autodiscover.exchange.COMPANYDOMAIN.TLD (Companydomain is our company that hosts the exchange servers, customerdomain being the customers domain) Shouldn't that work? I know that Microsoft does something like that for Office365, but I really don't think they buy a certificate for every customer.. So I guess some redirection should be setup somehow - any guidance? Next thing: When we accept that error, and move on to actually starting Outlook, it states that the certificate is not valid for the RPC proxy server exchange.COMPANYDOMAIN.TLD - this domain is not right, as that domain is not included in the certificate. I would instead like this domain to be mail.exchange.COMPANYDOMAIN.TLD I tried to run this script setting both internal and external URL's to be the same, with no luck. Any guidance on this one? I am running Exchange 2010 SP2, with CAS, HT and MBX split up on 3 different servers.

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  • Can Spotlight or Media Browser index metadata contained in iPhoto or Aperture in Mac OS X?

    - by jaydles
    It seems silly to go to all the trouble to assign "Face" data to thousands of photos, but not make it possible to use that data to locate them outside of that application. Is there any way to get Spotlight or Media Browser in OSX (Snow Leopard) to index and recognize metadata (Faces, Places, etc.) contained in iPhoto or Aperture? I know that that metadata is stored in the "library" database for Aperture/iphoto, rather than on the actual files (which is too bad). And I can even potentially see why it might create challenges for spotlight to use it, since spotlight is presumably a file index system, not a media organizer, but surely the media browser used across the other OSX apps is intended to use it? The media browser's whole purpose seems to be to let you easily locate and reference the items you organize in one of the ilife apps (iphoto or Aperture, in this case) from the others (say, imovie, or Mail). It's particularly vexing since the photo app on the iphone sorts by faces by default. Additionally, the mac-based media browser does access smart albums and folders, so you could establish a workaround by creating a smart album for each "face" or place, or tag, and access them that way, but it seems like there must be an easier way. Am I missing something?

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  • How do you avoid that server documentation gets out of sync with the actual setup?

    - by Frerich Raabe
    I'm a hobbyist maintaining a small FreeBSD server serving mail via IMAP - it's an exercise in server administration. The setup does have reasonably good documentation (in AsciiDoc format) which recently allowed another person to recreate the entire setup from scratch in less than 30 minutes. However, I noticed that after the initial setup, it easily happens that small changes done to the system (say: inetd gets disabbled, my IMAP server listens on an additional port for ManageSieve connections, a new router is added to the exim configuration) don't end up in the documentation immediately (if at all). My idea was to avoid this problem by (partially?) generating the documentation out of the configuration files and the comments therein - one way to implement this may be to put /etc and /usr/local/etc into some source code management system (say - git) and then run a script which regenerates the documentation on every commit. However, I'm not sure whether that would be overkill and/or too difficult to get right (after all, I don't want complete copies of the source files in my documentation but rather just the diffs). How do other people avoid that the server documentation gets outdated - is there a good way to keep them in sync automatically, or do you just have the discipline to update the documentation the same time you modify the system?

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  • IP tables blocking access to most hosts but some accesses being logged

    - by epo
    What am I getting wrong? A while back I locked down my web hosting service while hardening it or at least trying to. Apache listens on port 80 only and I set up iptables using the following: IPS="list of IPs" iptables --new-chain webtest # Accept all established connections iptables -A INPUT --protocol tcp --dport 80 --jump webtest iptables -A INPUT --match state --state ESTABLISHED,RELATED --jump ACCEPT iptables -A webtest --match state --state ESTABLISHED,RELATED --jump ACCEPT for ip in $IPS; do iptables -A webtest --match state --state NEW --source $ip --jump ACCEPT done iptables -A webtest --jump DROP However looking at my apache logs I notice various log entries in access_log, e.g. 221.192.199.35 - - [16/May/2010:13:04:31 +0100] "GET http://www.wantsfly.com/prx2.php?hash=926DE27C156B40E55E4CFC8F005053E2D81E6D688AF0 HTTP/1.0" 404 206 "-" "Mozilla/ 4.0 (compatible; MSIE 6.0; Windows NT 5.0)" 201.228.144.124 - - [16/May/2010:11:54:16 +0100] "GET /w00tw00t.at.ISC.SANS.DFind:) HTTP/1.1" 400 226 "-" "-" 207.46.195.224 - - [16/May/2010:04:06:48 +0100] "GET /robots.txt HTTP/1.1" 200 311 "-" "msnbot/2.0b (+http://search.msn.com/msnbot.htm)" How are these slipping through? I don't mind the indexing bots (though I am a little surprised to see them get through). I suppose they must be getting through using the ESTABLISHED,RELATED rules. And no, I can't for the life of me remember why the first match state rule is there So 2 questions: is there a better way to set up iptables to restrict access to specified hosts? How exactly are these 3 examples slipping through?

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  • logrotate: neither rotate nor compress empty files

    - by Andrew Tobey
    i have just set up an (r)syslog server to receive the logs of various clients, which works fine. only logrotate is still not behaving as intending. i want logrotate to create a new logfile for each day, but only to keep and store i.e. compress non-empty files. my logrotate config looks currently like this # sample configuration for logrotate being a remote server for multiple clients /var/log/syslog { rotate 3 daily missingok notifempty delaycompress compress dateext nomail postrotate reload rsyslog >/dev/null 2>&1 || true endscript } # local i.e. the system's very own logs: keep logs for a whole month /var/log/kern.log /var/log/kernel-info /var/log/auth.log /var/log/auth-info /var/log/cron.log /var/log/cron-info /var/log/daemon.log /var/log/daemon-info /var/log/mail.log /var/log/rsyslog /var/log/rsyslog-info { rotate 31 daily missingok notifempty delaycompress compress dateext nomail sharedscripts postrotate reload rsyslog >/dev/null 2>&1 || true endscript } # received i.e. logs from the clients /var/log/path-to-logs/*/* { rotate 31 daily missingok notifempty delaycompress compress dateext nomail } what i end up with is having is some sort of "summarized" files such as filename-datestampDay-Day and corresponding .gz files. What I do have are empty files, which are eventually zipped. so does the notifempty directive is in fact responsible for these DayX-DayY files, days on which really nothing happened? what would be an efficient way to drop both, empty log files and their .gz files, so that I eventually only keep logs/compressed files that truly contain data?

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  • Retrieve a user's Exchange database in powershell

    - by Paul
    Hey Everyone, I've scoured the interwebs for a few days now off and on to find this. I am creating a powershell script for email-enabling new user's(Exchange 2007). To give you a little background when we have a new hire, their AD account is created at our off-site helpdesk, but they don't create their email account. I'm trying to automate the process of mail-enabling the user which involves putting them in the same database as an existing user, disable imap pop activesync, and lastly email the requester of the ticket. I would like to just get prompted for the New User's name, User to Replicate(mailbox, storage group, database), and the person to email after it's been created. So if someone could just help with a command to Retrieve a user's Exchange database in powershell that would be great, but if people also want to help with my hacked up script please do so as well!!! Here is what I have so far: Write-output “ENTER THE FOLLOWING DETAILS” $DName = Read-Host “User Diplay Name" $RUser = Read-Host "Replicate User(Database Grab)" ***$RData = #get the Replicate user's mailbox database here*** $REmail = #either just use a Read-Host “Requester's Email address" or ask for Requester's name and pipe through their email address by digging for it w/ powershell Enable-Mailbox -Identity "$DName" -Database "$RData" Send-MailMessage -From "John Doe <[email protected]>" -To (put $REmail here which is the Requester's email) -Subject "Test Person's email account" -Body "Test Person's email account has been setup.`n`n`nJohn Doe`nGeneric Company`nSystems Administrator`nOffice: 123.456.7890`[email protected]" -SmtpServer genericexchange.exchange.com

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  • Vyatta masquerade out bridge interface

    - by miquella
    We have set up a Vyatta Core 6.1 gateway on our network with three interfaces: eth0 - 1.1.1.1 - public gateway/router IP (to public upstream router) eth1 - 2.2.2.1/24 - public subnet (connected to a second firewall 2.2.2.2) eth2 - 10.10.0.1/24 - private subnet Our ISP provided the 1.1.1.1 address for us to use as our gateway. The 2.2.2.1 address is so the other firewall (2.2.2.2) can communicate to this gateway which then routes the traffic out through the eth0 interface. Here is our current configuration: interfaces { bridge br100 { address 2.2.2.1/24 } ethernet eth0 { address 1.1.1.1/30 vif 100 { bridge-group { bridge br100 } } } ethernet eth1 { bridge-group { bridge br100 } } ethernet eth2 { address 10.10.0.1/24 } loopback lo { } } service { nat { rule 100 { outbound-interface eth0 source { address 10.10.0.1/24 } type masquerade } } } With this configuration, it routes everything, but the source address after masquerading is 1.1.1.1, which is correct, because that's the interface it's bound to. But because of some of our requirements here, we need it to source from the 2.2.2.1 address instead (what's the point of paying for a class C public subnet if the only address we can send from is our gateway!?). I've tried binding to br100 instead of eth0, but it doesn't seem to route anything if I do that. I imagine I'm just missing something simple. Any thoughts?

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  • How to manage unprivileged administration of system services using Debian?

    - by ypnos
    At our lab, we have several services handled by different phd students (like myself). Fluctuation is high and people do the job next to their research duties. Until now, services were running on different machines, with different OS setups that can result in administration hell quickly. We want to consolidate our service setup. Our main idea is that the guys responsible for the services should not meddle with the underlying system anymore. Apart from core systems like NFS and kerberos, a typical service is able to run as non-root already. I'm talking about apache, mysql, subversion, mail with openxchange, and so on. Redirecting privileged ports is also no issue (source). What is left is the configuration of the service and its payload. One scenario we envisioned is that every service has its own user and home directory, accessable by the corresponding admins. Backup and fallback of the service is easy, as everything needed for the service to run is found in one place. Are there established ways to create such a setup? Does a mostly unique method exist to make services find their files (other than in system directories) while still using the corresponding debian packages? Are there any catches with our idea that we may have overlooked? Would you maybe claim that virtualization is the answer to our problem? (In our POV, it wouldn't help us keeping system setup strictly separated from service setup.) Thank you for any advice!

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  • 3 simple questions about file permissions

    - by Camran
    1- Wonder, is this a good setup of permissions in the /var directory? drwxr-xr-x 2 root root 4096 2010-05-30 03:34 backups drwxr-xr-x 7 root root 4096 2010-05-29 17:55 cache drwxr-xr-x 29 root root 4096 2010-05-29 17:55 lib drwxrwsr-x 2 root staff 4096 2009-07-14 04:36 local drwxrwxrwt 3 root root 60 2010-06-02 03:34 lock drwxr-xr-x 9 root root 4096 2010-06-02 03:34 log drwxrwsr-x 2 root man 4096 2009-09-20 20:36 mail drwxr-xr-x 2 root root 4096 2009-09-20 20:36 opt drwxrwxrwt 12 root root 420 2010-06-02 12:12 run drwxr-xr-x 4 root root 4096 2009-09-20 20:37 spool drwxrwxrwt 2 root root 4096 2009-07-14 04:36 tmp drwxr-xr-x 14 user root 4096 2010-05-30 22:21 www 2- Could you give me a brief explanation of the columns above? First one is which permissions they have. Second is a nr. Third and fourth says "root root" for example. fifth is another nr (4096 for example). and the others are obvious. 3- Could you give me a brief explanation of the folders above? Especially the "lock" and "tmp" folders. Lock contains an apache2 folder which seems empty. Thanks

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  • Outlook 2007 + Exchange 2010 (Save All Attachments)

    - by RobertPitt
    About 3 weeks back our company upgraded our mail system to Exchange 2010, all went smooth, few issues but nothing major. A few days ago we had a call from a colleague where he was unable to save all attachments, From File > Save As > Save All Attachments. When the email has a single attachment it works perfectly normal, and depending on the file type it allows you to save multiple attachments. But there's a lot of file types that will not work, such as zip, pdf, doc etc, Usually we get a location box open up asking where we would like to drop the attachments, but it does nothing, You click Save All Attachments and nothing happens. After hours of research I have come across mixed results, a lot of people on forums have been explaining that they have recently crossed over to Exchange 2010 and there issues started there. But on the other hand Microsoft released a KB (278188) which was depressing if that, but that article was published in 2007, as stated by the time stamp, and Exchange 2010 has only come out recently. Im looking to see if you guys have any clues what could be causing this, anything server side that I can take a look at (AD, Exchange, ...). Any help on this is greatly supported

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  • Plesk FTP not working but SFTP and Shell is working

    - by shamittomar
    I am facing a strange problem. The FTP on my Plesk VPS is not working. Whenever I try to connect, FileZilla FTP client says: Status: Resolving address of xxxxxxxxxxxxx.com Status: Connecting to xxx.xxx.xxx.xxx:21... Status: Connection established, waiting for welcome message... Error: Could not connect to server So, it's not even going to the step of asking username/password. So, it's something else. The SFTP on port 22 is working fine. Also, I can successfully do shell access and run commands. But, I NEED FTP access too on port 21. I have searched everywhere but can not find any setting to enable it. This is the Plesk version info: Parallels Plesk Panel version 9.5.2 Operating system Linux 2.6.26.8-57.fc8 CPU GenuineIntel, Intel(R) Pentium(R) 4 CPU 3.00GHz Any help is appreciated. [EDIT]: The firewall is not blocking it. I have checked it on server and there are absolutely no blocking rule. Firewall states: All incoming/outgoing connections are accepted on FTP And on client-side (my PC), I can connect to other FTP servers so this is not an issue in my PC's firewall. Moreover, I can not even connect to the FTP from online FTP clients like net2ftp.

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