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  • DB2 users and groups

    - by Arun Srini
    Just want to know everyone's experience and take on managing users/authentication on a multi-node db2 cluster with users groups. I have 17 apps in production (project based company, only 2 online apps), and some 30 users with 7 groups. prodsel - group that has select privilege on all tables produpdt - update group on selective tables (as required by the apps) proddel - delete prodins - insert permissions for the group Now what my company does is when an app uses certain user (called app1user), and needs select and insert privilege on a table, they 1. grant select and insert for prodsel, prodins respectively 2. add the user under those two groups... now this creates one to many relationship between user and privileges, and this app1user also gets select on other tables granted for the prodsel group. I know this is wrong. Before I explain, I need to know how this is done elsewhere. Please share your experiences, even if you use other Databases that uses OS level authentication.

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  • SSH onto Ubuntu box using RSA keys

    - by jex
    I recently installed OpenSSH on one of my Ubuntu machines and I've been running into problems getting it to use RSA keys. I've generated the RSA key on the client (ssh-keygen), and appended the public key generated to both the /home/jex/.ssh/authorized_keys and /etc/ssh/authorized_keys files on the server. However, when I try to login (ssh -o PreferredAuthorizations=publickey jex@host -v [which forces the use of public key for login]) I get the following output: debug1: Host 'pentheon.local' is known and matches the RSA host key. debug1: Found key in /home/jex/.ssh/known_hosts:2 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received Banner message debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Next authentication method: publickey debug1: Offering public key: /home/jex/.ssh/id_rsa debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Trying private key: /home/jex/.ssh/identity debug1: Trying private key: /home/jex/.ssh/id_dsa debug1: No more authentication methods to try. Permission denied (publickey,keyboard-interactive). I'm not entirely sure where I've gone wrong. I am willing to post my /etc/ssh/sshd_config if needed.

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  • Windows 8 Microsoft Account and Microsoft Store doesn't allow login

    - by Prabhpreet
    The problem is that I have to go through proxy here in college to make my internet work. When I signed with my live id to switch to the Microsoft account in Windows 8, it recognized and validate my security questions but says it cannot connect to Microsoft Services. All other apps like mail, messenger, etc. work except for the Windows Store. The windows store what apps are available but when installed, queues it up for a pending download. Is there a way to modify my proxy settings so that I can access both these features?

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  • Cisco ASA 5505 - L2TP over IPsec

    - by xraminx
    I have followed this document on cisco site to set up the L2TP over IPsec connection. When I try to establish a VPN to ASA 5505 from my Windows XP, after I click on "connect" button, the "Connecting ...." dialog box appears and after a while I get this error message: Error 800: Unable to establish VPN connection. The VPN server may be unreachable, or security parameters may not be configured properly for this connection. ASA version 7.2(4) ASDM version 5.2(4) Windows XP SP3 Windows XP and ASA 5505 are on the same LAN for test purposes. Edit 1: There are two VLANs defined on the cisco device (the standard setup on cisco ASA5505). - port 0 is on VLAN2, outside; - and ports 1 to 7 on VLAN1, inside. I run a cable from my linksys home router (10.50.10.1) to the cisco ASA5505 router on port 0 (outside). Port 0 have IP 192.168.1.1 used internally by cisco and I have also assigned the external IP 10.50.10.206 to port 0 (outside). I run a cable from Windows XP to Cisco router on port 1 (inside). Port 1 is assigned an IP from Cisco router 192.168.1.2. The Windows XP is also connected to my linksys home router via wireless (10.50.10.141). Edit 2: When I try to establish vpn, the Cisco device real time Log viewer shows 7 entries like this: Severity:5 Date:Sep 15 2009 Time: 14:51:29 SyslogID: 713904 Destination IP = 10.50.10.141, Decription: No crypto map bound to interface... dropping pkt Edit 3: This is the setup on the router right now. Result of the command: "show run" : Saved : ASA Version 7.2(4) ! hostname ciscoasa domain-name default.domain.invalid enable password HGFHGFGHFHGHGFHGF encrypted passwd NMMNMNMNMNMNMN encrypted names name 192.168.1.200 WebServer1 name 10.50.10.206 external-ip-address ! interface Vlan1 nameif inside security-level 100 ip address 192.168.1.1 255.255.255.0 ! interface Vlan2 nameif outside security-level 0 ip address external-ip-address 255.0.0.0 ! interface Vlan3 no nameif security-level 50 no ip address ! interface Ethernet0/0 switchport access vlan 2 ! interface Ethernet0/1 ! interface Ethernet0/2 ! interface Ethernet0/3 ! interface Ethernet0/4 ! interface Ethernet0/5 ! interface Ethernet0/6 ! interface Ethernet0/7 ! ftp mode passive dns server-group DefaultDNS domain-name default.domain.invalid object-group service l2tp udp port-object eq 1701 access-list outside_access_in remark Allow incoming tcp/http access-list outside_access_in extended permit tcp any host WebServer1 eq www access-list outside_access_in extended permit udp any any eq 1701 access-list inside_nat0_outbound extended permit ip any 192.168.1.208 255.255.255.240 access-list inside_cryptomap_1 extended permit ip interface outside interface inside pager lines 24 logging enable logging asdm informational mtu inside 1500 mtu outside 1500 ip local pool PPTP-VPN 192.168.1.210-192.168.1.220 mask 255.255.255.0 icmp unreachable rate-limit 1 burst-size 1 asdm image disk0:/asdm-524.bin no asdm history enable arp timeout 14400 global (outside) 1 interface nat (inside) 0 access-list inside_nat0_outbound nat (inside) 1 0.0.0.0 0.0.0.0 static (inside,outside) tcp interface www WebServer1 www netmask 255.255.255.255 access-group outside_access_in in interface outside timeout xlate 3:00:00 timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02 timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00 timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00 timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute http server enable http 192.168.1.0 255.255.255.0 inside no snmp-server location no snmp-server contact snmp-server enable traps snmp authentication linkup linkdown coldstart crypto ipsec transform-set TRANS_ESP_3DES_SHA esp-3des esp-sha-hmac crypto ipsec transform-set TRANS_ESP_3DES_SHA mode transport crypto ipsec transform-set TRANS_ESP_3DES_MD5 esp-3des esp-md5-hmac crypto ipsec transform-set TRANS_ESP_3DES_MD5 mode transport crypto map outside_map 1 match address inside_cryptomap_1 crypto map outside_map 1 set transform-set TRANS_ESP_3DES_MD5 crypto map outside_map interface inside crypto isakmp enable outside crypto isakmp policy 10 authentication pre-share encryption 3des hash md5 group 2 lifetime 86400 telnet timeout 5 ssh timeout 5 console timeout 0 dhcpd auto_config outside ! dhcpd address 192.168.1.2-192.168.1.33 inside dhcpd enable inside ! group-policy DefaultRAGroup internal group-policy DefaultRAGroup attributes dns-server value 192.168.1.1 vpn-tunnel-protocol IPSec l2tp-ipsec username myusername password FGHFGHFHGFHGFGFHF nt-encrypted tunnel-group DefaultRAGroup general-attributes address-pool PPTP-VPN default-group-policy DefaultRAGroup tunnel-group DefaultRAGroup ipsec-attributes pre-shared-key * tunnel-group DefaultRAGroup ppp-attributes no authentication chap authentication ms-chap-v2 ! ! prompt hostname context Cryptochecksum:a9331e84064f27e6220a8667bf5076c1 : end

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  • What is the best nginx compression gzip level?

    - by Chamnap
    I'm using nginx reverse proxy cache with gzip enabled. However, I got some problems from android applications http requests to my rails json web service. It seems when I turn off reverse proxy cache, it works ok because the response header comes without gzip. Therefore, I think the problem caused from gzip. What is the most appropriate level of gzip compression? gzip on; gzip_http_version 1.0; gzip_vary on; gzip_comp_level 6; gzip_proxied any; gzip_types text/plain text/css text/javascript application/javascript application/json application/x-javascript text/xml application/xml application/xml+rss;

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  • HTTP 401 Challenge and HTTP 302 Login/Redirect won't work together in IIS7

    - by RandomBen
    I am developing a website using .NET 3.5 that allow users to visit the site and create logins using the standard Microsoft login controls. However, users do not need to login to do general things like view products. Now I need to setup the site so some of our Traveling Sales people are able to access it but not allow anyone else to access it. The easiest way I know how to do this is to turn on Windows Authentication for the Site in IIS7. When I do that I get all sorts of errors due to also having Forms Authentication turned on. If I turn Forms Auth then I get a different kind of error. Does anyone know how to make Forms Auth and Windows Auth play nice on a single site in IIS7 or some other way to create a required login without having me kill Forms Auth?

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  • Cisco login on-failure using syslog doesn't show username on failure?

    - by Jim
    interesting issue I am running into. I am trying to get syslog rmeote logging working with a Cisco switch. i have it working and logging for both on-success and on-failure. However when it is a failed login attempt it does not show the user name that tried to log in in the logs? Here is what the log looks like after a failed login: %SEC_LOGIN-4-LOGIN_FAILED: Login failed [user: ] [Source: 10.0. 0.6] [localport: 23] [Reason: Login Authentication Failed] Here is what I ahve in the sh run: login block-for 60 attempts 3 within 60 login delay 1 login on-failure log login on-success log archive log config logging enable notify syslog contenttype plaintext logging trap notifications logging facility local4 logging 10.0.0.8 aaa new-model aaa authentication login default local group tacacs+ aaa authorization config-commands aaa authorization exec default local group tacacs+

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  • DokuWiki Segmentation Fault On Radius Auth

    - by mrduclaw
    I'm running x64 Ubuntu 12.04. I did a simple apt-get install dokuwiki to install DokuWiki. And I'm trying to follow the directions located here: http://www.dokuwiki.org/auth:radius to get Radius authentication working. Things seemed to install OK. Under Configuration Manager I selected Authentication backend to be "Radius" and filled in the Radius details at the bottom. Now, however, whenever I try to log into the Wiki, my browser gives me the following error: No data received I checked /var/log/apache2/error.log and see this: [Tue Jul 10 22:22:14 2012] [notice] child pid 5270 exit signal Segmentation fault (11) I'm fairly sure the Radius server is setup correctly as it correctly authenticates with my squid proxy and other stuff on the network. But this is about the extent of my Linux troubleshooting skills. Can anyone suggest steps for me to follow to help track down what's causing apache2 to segfault short of attaching with gdb and issuing a set follow-fork-mode? I'm also open to just hearing suggestions for simila

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  • Database/Web Server and SQL Server Setup - Security?

    - by Jess
    This seems really basic, but I couldn't find an answer already ... we are looking to deploy a website to an IIS server, and a database to a separate server. We aren't sure how to best secure this for access by internal users and internet. The IIS Server is not connected to the domain, and neither is the database at the moment. Should it be? Also, if we use SQL Server authentication instead of Windows Authentication, should we just hard-code the user/password into our internal apps?

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  • How to integrate Windows Server 2008 R2's NPS with Cisco switches?

    - by Massimo
    I need to evaluate in a lab environment the use of Windows Server 2008 R2's NPS for 802.1x authentication with Cisco Catalyst 3750 switches; the general idea is to only let clients connect to the company network if they can provide valid domain logon credentials, placing them in a restricted VLAN instead if they can't. NAP would also be a bonus, but it can be evaluated later; the main point now is only 802.1x authentication. Although I have very good knowledge of Windows and Active Directory (on the Microsoft side) and quite good knowledge of Catalyst switches (on the Cisco side), I'm totally new to 802.1x; I'd really like some general guidelines and help here, and some sort of implementation guide would also be very useful.

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  • How to change 802.1x settings for Wireless in Windows XP SP3?

    - by mspoerr
    Hello, I want to configure EAP-TLS with Machine Authentication ONLY for a wireless network. The supplicant is the bulit-in supplicant in Windows XP SP3. I found the following document: http://support.microsoft.com/kb/929847 - How to enable computer-only authentication for a 802.1X-based network in Windows Vista, in Windows Server 2008, and in Windows XP Service Pack 3 But unforunately the needed command "netsh wlan" is not available in Windows XP - "Note Windows XP SP3 and earlier versions of Windows XP do not support the netsh wlan command." How can I change the settings without the "netsh wlan" command? Thanks, mspoerr

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  • configure Heartbeat on Centos Linux - error message

    - by Elad Dotan
    I installed Heartbeat on my Centos Linux and it seems to partially work..but I'm trying to monitor a service with no success. only when I reboot the main server the backup server takes over. in the logs I get : heartbeat[30476]: 2012/03/20_18:51:57 WARN: string2msg_ll: node [node1] failed authentication heartbeat[30476]: 2012/03/20_18:51:58 WARN: string2msg_ll: node [node02] failed authentication the authkeys is identical (copied from one to another). this is my ha.cf: logfile /var/log/ha-log logfacility local0 keepalive 2 deadtime 30 initdead 120 bcast eth0 udpport 694 auto_failback on node server01.com node server02.com haresources : server01.com 38.108.117.3 aim chat any idea how to fix the problem so if a service stops the other server take over Thanks! E.

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  • Changing linksys router configuration from command-line

    - by Dan
    I am constantly logged into (ssh'd) my home machine (ubuntu) from various remote locations. Sometimes I would like to change my home linksys router settings (change the port forwarding settings or disable/enable wireless, things like that). When I try and use the links2 text browser, there isn't much I can do because the tab titles don't show up (presumably because they are pictures?). Is there another way of configuring a linksys router from a command line? I guess my only other option is to set up a proxy on my home machine and use a browser connected to that proxy to configure it, but I would think there might be a non-browser way of doing it. Thanks

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  • SSH broken after homedir permissions and hostname change on EC2-hosted Ubuntu

    - by dimadima
    I changed my instance's hostname using the hostname utility and then set it in /etc/hostname so that the new name survives reboot. My main motivation was for differentiating between instances at the prompt using the \h format in PS1. EDIT I also changed permissions on my home directory. I made my home directory group writeable. Now I can no longer SSH into the machine. The short of it is the error Permission denied (publickey). Running ssh -v, the more verbose output is: debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering RSA public key: /Users/dmitry/.ssh/id_rsa debug1: Authentications that can continue: publickey debug1: Trying private key: /Users/dmitry/.ssh/ec2key.pem debug1: read PEM private key done: type RSA debug1: Authentications that can continue: publickey debug1: No more authentication methods to try. Permission denied (publickey). Should I have done something after changing the hostname? Now I can't get into the instance! :(

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  • CREDSSP 500 errors

    - by Andy Milsark
    Hello all, We are experience a 500 http error when trying to run remote powershell on a win 2008 R2 server. I have run enable-wsmancredssp for both client and server roles on this machine. I have also run "winrm quickconfig". Also the allowfreshcredentials delegation group policy is setup correctly as well. There are active listeners running and credssp is enabled for client and service. I can connect with kerberos (by not specifing authentication type), but the following remote powershell command fails: Enter-PSSession -ComputerName serverX -credential domain\user -Authentication Credssp Error: Enter-PSSession : Connecting to remote server failed with the following error message : The WinRM client received an HTTP server error status (500), but the remote service did not include any other information about the cause of the failure. For more information, see the about_Remote_Troubleshooting Help topic. At line:1 char:16 I have not been able to find any useful information on how to troubleshoot this. I have restarted Winrm, rebooted, disabled and re-enabled credssp. Please help.

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  • Apache2 proxypass

    - by gatsby
    i'm trying to figure out why my apache2 reverse proxy doesn't work... hope someone can clarify. i'm using an apache server as a gateway with proxy pass: 10.184.1.2 is the IP. these are PP instructions i inserted in the 000-default config file. ProxyPass / http://192.168.102.31/ ProxyPassReverse / http://192.168.102.31/ the host 192.168.102.31 is an internal IP of a subnet wich is not reachable directly by clients, but only by the apache gateway. when i try to access such a address: http://apache_gateway_name/dir i see the client trying to reach 192.168.102.31 address and of course timeout occurs. can someone help? Best regards

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  • getUserPrincipal() in JCIFS / Lan-Manager authentitation level setting in Windows 2k8

    - by Chris
    I have to find out in which exact format JCIFS stores the user principal in the "getUserPrincipal()" property. Therefor i created a test Environment like this: Windows Server 2008 Domain Controller Domain named "MYDOMAIN" Many Testusers in Active Directory Tomcat Application Server with my Web Application (which simply reads the user Principal and displays its values). The user should be logged in to the web-application with SSO therefor i need the format that jcifs is using to store the user. (For example user@MYDOMAIN or MYDOMAIN\user...) I tested the Authentication with other SSO frameworks with Kerberos Method and it works as expected. I'm now trying to use SSO through the NTLMHttpFilter of JCIFS. When i try to login i get the following error message: jcifs.smb.SmbException: The parameter is incorrect. jcifs.smb.SmbTransport.checkStatus(SmbTransport.java:541) jcifs.smb.SmbTransport.send(SmbTransport.java:641) jcifs.smb.SmbSession.sessionSetup(SmbSession.java:322) jcifs.smb.SmbSession.send(SmbSession.java:224) jcifs.smb.SmbTree.treeConnect(SmbTree.java:176) jcifs.smb.SmbSession.logon(SmbSession.java:153) jcifs.smb.SmbSession.logon(SmbSession.java:146) jcifs.http.NtlmHttpFilter.negotiate(NtlmHttpFilter.java:189) jcifs.http.NtlmHttpFilter.doFilter(NtlmHttpFilter.java:121) Regarding to the documentation i'm using to configure this, this is a know issue with the Group policy. It is stated there, that i have to change the Group policy "Networkaccess: lan-manager authentication level" to respond to NTLMv1 request. I have done this, but it's still not working. So what i also have to configure is the same policy on the client computer. I have to change the policy, so that the client computer sends NTLMv1. But it is always sending NTLMv2 tokens. The problem now is that i'm somehow not able to change this setting. (I already was before) because the dropdown box to choose the authentication method is "greyed out". edit: just to make this clear, this dialog is on the client-side in the "local-security policies" As you can see from this screenshot, the chosen method is "Only send NTLMv2 responses" which is the wrong setting and i'm pretty sure that this is causing the error above. My question is now, why can't i change this setting? Why is it greyd out?

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  • How does one remove an encryption type from a kerberos principal?

    - by 84104
    I would like to remove all of the des keys from the principal below, but have no idea how to do so without someone inputting the password. kadmin: getprinc user Principal: [email protected] Expiration date: [never] Last password change: Thu May 26 08:52:51 PDT 2013 Password expiration date: [none] Maximum ticket life: 0 days 12:00:00 Maximum renewable life: 7 days 00:00:00 Last modified: Tue Jul 16 15:17:18 PDT 2013 (administrator/[email protected]) Last successful authentication: Wed Jul 24 14:40:53 PDT 2013 Last failed authentication: [never] Failed password attempts: 0 Number of keys: 8 Key: vno 3, aes256-cts-hmac-sha1-96, no salt Key: vno 3, arcfour-hmac, no salt Key: vno 3, des3-cbc-sha1, no salt Key: vno 3, des-cbc-crc, no salt Key: vno 3, des-cbc-md5, no salt Key: vno 3, des-cbc-md5, Version 5 - No Realm Key: vno 3, des-cbc-md5, Version 5 - Realm Only Key: vno 3, des-cbc-md5, AFS version 3 MKey: vno 2 Attributes: REQUIRES_PRE_AUTH Policy: [none] Also, the the kdc is using an OpenLDAP backend.

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  • Added autossh in rc.local, but the dynamic port forwarding won't work

    - by rankjie
    I am using Rasbian on my newly arrived Rasp.Pi, and decided to make it my own proxy server. Now I need to set up a ssh tunnel on the Pi to my Linode server, and make it auto start with the system. What did I do: Add this line to /etc/rc.local autossh -f theRemoteServer -N -D 5555 -L 1234:localhost:22 After I reboot, I found out that I can't use the localhost:5555 as a socks proxy. So I type the command ps -A | grep ssh then I can see the autossh and ssh all running: pi@raspberrypi ~ $ ps -A | grep ssh 2018 ? 00:00:00 sshd 2116 ? 00:00:00 autossh 2119 ? 00:00:00 sshd 2195 ? 00:00:00 sshd 3173 ? 00:00:00 ssh (I've installed autossh, and the command works if I type it manually.) (I use the passwordless key auth, so I don't have to enter password.) Much appreciated and sorry for my poor English.

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  • Virtual Hosting in RHEL 5

    - by Kumar P
    We have a RHEL 5 Linux server with a few Windows XP clients. We provide web development in PHP. Now my developers as for common local PHP server for keep their projects in same place. Currently the proxy server and Samba sharing are running on the RHEL 5 server. I installed httpd, PHP and MySQL in the server. And I would like to configure virtual hosting too for LAN. What I want do for it? We have 2 Ethernet ports in the server, 1 for local connections and another one for Internet. Internet is provided by an ADSL provider. (192.168.0.0 series for ADSL modem connection and 10.1.1.0 for the LAN connection. If I want to use virtual hosting, do I need to setup local DNS server? My requirements are: setup PHP with MySQL server for local clients with multiple hosting, without disturbing proxy and Samba.

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  • Why would you use EAP-TTLS instead of PEAP?

    - by Ivan Macek
    As I understood EAP-TTLS and PEAP share same level of security when implemented in wireless networks. Both only provide server side authentication via certificate. The drawback of EAP-TTLS can be non native support in Microsoft Windows so every user has to install additional software. The benefit of EAP-TTLS can be support for less secure authentication mechanisms (PAP, CHAP, MS-CHAP) but why would you need them in modern and properly secure wireless system? What are you opinions? Why should I implement EAP-TTLS instead of PEAP? Let's say that I have most Windows users, medium Linux users and least iOS, OSX users.

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  • Unable to PPTP through NAT on Cisco 881

    - by MasterRoot24
    I'm trying to connect to a PPTP server which is sat behind a Cisco 881 NAT router. The server is running Ubuntu Server 12.04 and is running Poptop pptpd as the PPTP daemon listening for connections. As discussed in my other question, I'm trying to setup a Cisco 881 router to replace my old Linksys WAG320N. This same server and WAN connection worked fine with the WAG320N with no special configuration, other than allowing 1723 in through the firewall. On the Cisco 881, I'm using the newer ip nat enable or NAT NVI to setup static routes in through the firewall for the services running behind the router. My reason being that I can't run another copy of my live DNS domains internally with local IP addresses in. For the purposes of this question, though, I have rebuilt the router with ip nat inside/outside style NAT'ing, but this issue is still apparent. HTTP/SMTP/IMAP etc. all work ok from both the WAN and LAN interfaces of the router. I'm only having issues with SIP (see other question) and PPTP. My issue is that the GRE doesn't appear to be passing through NAT correctly and one end of the connection is not receiving GRE traffic when it should be, so the server hangs up the connection. Here's an example of /var/log/syslog with debug enabled in /etc/pptpd.conf: Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: MGR: Launching /usr/sbin/pptpctrl to handle client Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: local address = 192.168.1.50 Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: remote address = 192.168.1.51 Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: pppd options file = /etc/ppp/pptpd-options Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Client 82.132.248.216 control connection started Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Received PPTP Control Message (type: 1) Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Made a START CTRL CONN RPLY packet Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: I wrote 156 bytes to the client. Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Sent packet to client Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Received PPTP Control Message (type: 7) Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Set parameters to 100000000 maxbps, 64 window size Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Made a OUT CALL RPLY packet Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Starting call (launching pppd, opening GRE) Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: pty_fd = 6 Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: tty_fd = 7 Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: I wrote 32 bytes to the client. Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: CTRL: Sent packet to client Dec 11 21:06:30 <HOSTNAME> pptpd[22627]: CTRL (PPPD Launcher): program binary = /usr/sbin/pppd Dec 11 21:06:30 <HOSTNAME> pptpd[22627]: CTRL (PPPD Launcher): local address = 192.168.1.50 Dec 11 21:06:30 <HOSTNAME> pptpd[22627]: CTRL (PPPD Launcher): remote address = 192.168.1.51 Dec 11 21:06:30 <HOSTNAME> pppd[22627]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded. Dec 11 21:06:30 <HOSTNAME> pppd[22627]: pppd 2.4.5 started by root, uid 0 Dec 11 21:06:30 <HOSTNAME> pppd[22627]: Using interface ppp0 Dec 11 21:06:30 <HOSTNAME> pppd[22627]: Connect: ppp0 <--> /dev/pts/3 Dec 11 21:06:30 <HOSTNAME> pptpd[22626]: GRE: Bad checksum from pppd. Dec 11 21:06:31 <HOSTNAME> pptpd[22626]: CTRL: Received PPTP Control Message (type: 15) Dec 11 21:06:31 <HOSTNAME> pptpd[22626]: CTRL: Got a SET LINK INFO packet with standard ACCMs Dec 11 21:07:00 <HOSTNAME> pppd[22627]: LCP: timeout sending Config-Requests Dec 11 21:07:00 <HOSTNAME> pppd[22627]: Connection terminated. Dec 11 21:07:00 <HOSTNAME> avahi-daemon[1042]: Withdrawing workstation service for ppp0. Dec 11 21:07:00 <HOSTNAME> pppd[22627]: Modem hangup Dec 11 21:07:00 <HOSTNAME> pppd[22627]: Exit. Dec 11 21:07:00 <HOSTNAME> pptpd[22626]: GRE: read(fd=6,buffer=6075a0,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs Dec 11 21:07:00 <HOSTNAME> pptpd[22626]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7) Dec 11 21:07:00 <HOSTNAME> pptpd[22626]: CTRL: Reaping child PPP[22627] Dec 11 21:07:00 <HOSTNAME> pptpd[22626]: CTRL: Client 82.132.248.216 control connection finished Dec 11 21:07:00 <HOSTNAME> pptpd[22626]: CTRL: Exiting now Dec 11 21:07:00 <HOSTNAME> pptpd[5803]: MGR: Reaped child 22626 As far as Cisco are concerned, all I need is ip nat source static tcp <SERVER LAN IP> 1723 interface FastEthernet4 1723 but of course this doesn't seem to the be helping the GRE traffic through as it should. Trying the connection to the LAN IP of the server from the same LAN as the server (behind the router), the PPTP connection works fine, so I'm confident that the server's config is ok. Furthermore, all I needed on my WAG320N was to open 1723 in the firewall. Here's my current router config: ! ! Last configuration change at 20:20:15 UTC Tue Dec 11 2012 by xxx version 15.2 no service pad service timestamps debug datetime msec service timestamps log datetime msec service password-encryption ! hostname xxx ! boot-start-marker boot-end-marker ! ! enable secret 4 xxxx ! aaa new-model ! ! aaa authentication login local_auth local ! ! ! ! ! aaa session-id common ! memory-size iomem 10 ! crypto pki trustpoint TP-self-signed-xxx enrollment selfsigned subject-name cn=IOS-Self-Signed-Certificate-xxx revocation-check none rsakeypair TP-self-signed-xxx ! ! crypto pki certificate chain TP-self-signed-xxx certificate self-signed 01 xxx quit ip gratuitous-arps ip auth-proxy max-login-attempts 5 ip admission max-login-attempts 5 ! ! ! ! ! ip domain list dmz.xxx.local ip domain list xxx.local ip domain name dmz.xxx.local ip name-server 192.168.1.x ip cef login block-for 3 attempts 3 within 3 no ipv6 cef ! ! multilink bundle-name authenticated license udi pid CISCO881-SEC-K9 sn xxx ! ! username admin privilege 15 secret 4 xxx username joe secret 4 xxx ! ! ! ! ! ip ssh time-out 60 ! ! ! ! ! ! ! ! ! interface FastEthernet0 no ip address ! interface FastEthernet1 no ip address ! interface FastEthernet2 no ip address ! interface FastEthernet3 switchport access vlan 2 no ip address ! interface FastEthernet4 ip address dhcp ip nat enable duplex auto speed auto ! interface Vlan1 ip address 192.168.1.x 255.255.255.0 no ip redirects no ip unreachables no ip proxy-arp ip nat enable ! interface Vlan2 ip address 192.168.0.x 255.255.255.0 ! ip forward-protocol nd ip http server ip http access-class 1 ip http authentication local ip http secure-server ! ! ip nat source list 1 interface FastEthernet4 overload ip nat source list 2 interface FastEthernet4 overload ip nat source static tcp 192.168.1.x 1723 interface FastEthernet4 1723 ! ! access-list 1 permit 192.168.0.0 0.0.0.255 access-list 2 permit 192.168.1.0 0.0.0.255 ! ! ! ! control-plane ! ! banner motd Authorized Access only ! line con 0 exec-timeout 15 0 login authentication local_auth line aux 0 exec-timeout 15 0 login authentication local_auth line vty 0 4 access-class 2 in login authentication local_auth length 0 transport input all ! ! end UPDATE 16/12/2012: The only progress that I have been able to make on this issue is that I'm confident that the issue is caused by the GRE tunnels (which are required for the PPTP connection to complete) are being blocked. When attempting a connection, I can see in show ip nat nvi translations that both a TCP translation on 1723 is setup and also a GRE translation is setup also. I appear to be able to see GRE related packets on the LAN that the server is on, so I am lead to believe that the server is sending(?) GRE packets, however running Wireshark on a client PC when attempting a connection shows absolutely no GRE packets. Whilst there are no configuration directives in my config posted above (that I can pin point) which would specifically block them, it would appear that the GRE packets are not being allowed in/out of the router's firewall, even though a NAT translation entry is setup to the server's LAN address. Would anyone be able to provide me with some help to ensure that GRE packets are not blocked by the router's firewall, so that this can be ruled out as a possible issue please?

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  • How do we keep Active Directory resilient across multiple sites?

    - by Alistair Bell
    I handle much of the IT for a company of around 100 people, spread across about five sites worldwide. We're using Active Directory for authentication, mostly served to Linux (CentOS 5) systems via LDAP. We've been suffering through a spate of events where the IP tunnel between the two major sites goes down and the secondary domain controller at one site can't contact the primary domain controller at the other. It seems that the secondary domain controller starts denying user authentication within minutes of losing connectivity to the primary. How do we make the secondary domain controller more resilient to downtime? Is there a way for it to cache the entire directory and/or at least keep enough information locally to survive a multi-hour disconnection? (We're all in a single organizational unit if that makes any difference.) (The servers here are Windows Server 2003; don't assume that we set this up correctly. I'm a software engineer, not an IT specialist.)

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  • Do I make the correct difference between spwan-cgi and mod_fcgi

    - by Saif Bechan
    First of all im configuring an webserver with nginx and apache2 working together. Having only nginx is no options for me, neither is lighttdp. I am reading a tutorial 'Nginx -Apache -Proxy configuration on Centos-Plesk server' where this is exaplained in some detail. One thing i don't really understand. They are talking about installing spawn-fcgi to spawn the fastcgi process. Now if i understand this correct this program is only for nginx apache will run as normal. Apache will just run the mod_php5.c. If i want to have apache also work as fastcgi i have to confirgure that seperately, and let apache use mod_fcgi. Do I have this correct or am I talking utter nonsense. Nginx usses spawn-cgi as frontend Apache usses mod_fcgi in the back Inbetween there is a proxy that ports port 80(nginx) to port 8080(apache)

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  • Very Large number of connections in TIME_WAIT state; Server is slow, ipconntrac

    - by Sparsh Gupta
    I have a nginx server with load balancing and reverse proxy. Right now its behing another nginx but very soon I plan to make it front, where it will receive TCP connections from clients directly at a rate of 500req/second I am having some big troubles with the server. I have pasted my configurations here and I am kinda sure that the problem is with ipconntrac and similar things which are alient to me http://paste.org/pastebin/view/28543 root@load_balancer:/proc/sys/net/ipv4# netstat -an|awk '/tcp/ {print $6}'|sort|uniq -c 67 CLOSING 727 ESTABLISHED 173 FIN_WAIT1 183 FIN_WAIT2 19 LAST_ACK 5 LISTEN 447 SYN_RECV 1 SYN_SENT 27970 TIME_WAIT Its a ubuntu machine with mainly nginx (load balancer and reverse proxy) installed. It surely isnt great. Can you help me understand whats going on and how can I fix it. This is my live server and I am sure its in a bad shape right now. Any document or commands to fix this, or settings I should make to make this better and reduce time wait and fin_wait1/2 better would be awesome.

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