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• Out of nowhere, ssh_exchange_identification: Connection closed by remote hot me too

  - by dgerman

  See similar: Out of nowhere, ssh_exchange_identification: Connection closed by remote host Today, 6/19/12 attempting to ssh to the same host as usual ssh replied ssh_exchange_identification: Connection closed by remote host two additional attempts failed ssh -v $RWS OpenSSH_5.6p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading configuration data /etc/ssh_config debug1: Applying options for * debug1: Connecting to Real-World-Systems.com [174.127.119.33] port 22. debug1: Connection established. debug1: identity file /Users/dgerman/.ssh/id_rsa type 1 debug1: identity file /Users/dgerman/.ssh/id_rsa-cert type -1 debug1: identity file /Users/dgerman/.ssh/id_dsa type -1 debug1: identity file /Users/dgerman/.ssh/id_dsa-cert type -1 ssh_exchange_identification: Connection closed by remote host ping host was successful, ftp host was successful, ssh now successful, ssh -v $RWS OpenSSH_5.6p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading configuration data /etc/ssh_config debug1: Applying options for * debug1: Connecting to Real-World-Systems.com [174.127.119.33] port 22. debug1: Connection established. debug1: identity file /Users/dgerman/.ssh/id_rsa type 1 debug1: identity file /Users/dgerman/.ssh/id_rsa-cert type -1 debug1: identity file /Users/dgerman/.ssh/id_dsa type -1 debug1: identity file /Users/dgerman/.ssh/id_dsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_4.3 debug1: match: OpenSSH_4.3 pat OpenSSH_4* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.6 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host 'real-world-systems.com' is known and matches the RSA host key. debug1: Found key in /Users/dgerman/.ssh/known_hosts:5 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-with-mic,password debug1: Next authentication method: publickey debug1: Offering RSA public key: /Users/dgerman/.ssh/id_rsa debug1: Authentications that can continue: publickey,gssapi-with-mic,password debug1: Trying private key: /Users/dgerman/.ssh/id_dsa debug1: Next authentication method: password ++++ What gives?? +++++++++++ Mac OS X 10.4.7 , OpenSSH_5.6p1, OpenSSL 0.9.8r 8 Feb 2011, /Users/dgerman/.ssh > ls -la total 24 drwx------ 7 dgerman staff 238 Jun 19 15:46 . drwxr-xr-x 389 dgerman staff 13226 Jun 19 15:46 .. -rw------- 1 dgerman staff 1766 Feb 26 18:25 id_rsa -rw-r--r-- 1 dgerman staff 400 Feb 26 18:25 id_rsa.pub -rw-r--r-- 1 dgerman staff 67 Feb 26 18:27 keyfingerprint -rw-r--r-- 1 dgerman staff 6215 May 1 08:11 known_hosts -rw-r--r-- 1 dgerman staff 220 Feb 26 18:26 randomart

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• file corruption on read/write 2.6.32-22-server (happens across many kernels)

  - by Jonathan

  Hi Guys, I'm having an issue where after the server has been up for a period of time (~week/few days) the server will start reading corrupt data. For instance when I run a sha1sum of a file after a fresh boot it remains the same. However after a while I will start to get segfaults and from then on whenever I read this file I get a different sha1sum. I've checked S.M.A.R.T with long tests and I've run an extended memtest86+(12 passes) My lspci is as follows: 00:00.0 Host bridge: Advanced Micro Devices [AMD] RS780 Host Bridge 00:01.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (int gfx) 00:06.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 2) 00:07.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 3) 00:11.0 SATA controller: ATI Technologies Inc SB700/SB800 SATA Controller [AHCI mode] 00:12.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller 00:12.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller 00:12.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller 00:13.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller 00:13.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller 00:13.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller 00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 3c) 00:14.1 IDE interface: ATI Technologies Inc SB700/SB800 IDE Controller 00:14.3 ISA bridge: ATI Technologies Inc SB700/SB800 LPC host controller 00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge 00:14.5 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI2 Controller 00:18.0 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] HyperTransport Configuration 00:18.1 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Address Map 00:18.2 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] DRAM Controller 00:18.3 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Miscellaneous Control 00:18.4 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Link Control 01:05.0 VGA compatible controller: ATI Technologies Inc Radeon HD 3300 Graphics 01:05.1 Audio device: ATI Technologies Inc RS780 Azalia controller 02:00.0 Ethernet controller: Atheros Communications Atheros AR8121/AR8113/AR8114 PCI-E Ethernet Controller (rev b0) 03:00.0 FireWire (IEEE 1394): VIA Technologies, Inc. Device 3403 I could really use some help on this, do you have any idea what could cause this? It's really frustrating me as it seems to trigger entirely randomly and will not go away until I reboot. I'm also use KVM for virtualization as well as MD for software RAID on this server and the processor is a Phenom II X4 965. I don't believe it's the software raid however as this affects files also hosted on non-raid partitions so I don't know.

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• obtaining nimbuzz server certificate for nmdecrypt expert in NetMon

  - by lurscher

  I'm using Network Monitor 3.4 with the nmdecrypt expert. I'm opening a nimbuzz conversation node in the conversation window and i click Expert- nmDecrpt - run Expert that shows up a window where i have to add the server certificate. I am not sure how to retrieve the server certificate for nimbuzz XMPP chat service. Any idea how to do this? this question is a follow up question of this one. Edit for some background so it might be that this is encrypted with the server pubkey and i cannot retrieve the message, unless i debug the native binary and try to intercept the encryption code. I have a test client (using agsXMPP) that is able to connect with nimbuzz with no problems. the only thing that is not working is adding invisible mode. It seems this is some packet sent from the official client during login which i want to obtain. any suggestions to try to grab this info would be greatly appreciated. Maybe i should get myself (and learn) IDA pro? This is what i get inspecting the TLS frames on Network Monitor: Frame: Number = 81, Captured Frame Length = 769, MediaType = ETHERNET + Ethernet: Etype = Internet IP (IPv4),DestinationAddress:[...],SourceAddress:[....] + Ipv4: Src = ..., Dest = 192.168.2.101, Next Protocol = TCP, Packet ID = 9939, Total IP Length = 755 - Tcp: Flags=...AP..., SrcPort=5222, DstPort=3578, PayloadLen=715, Seq=4101074854 - 4101075569, Ack=1127356300, Win=4050 (scale factor 0x0) = 4050 SrcPort: 5222 DstPort: 3578 SequenceNumber: 4101074854 (0xF4716FA6) AcknowledgementNumber: 1127356300 (0x4332178C) + DataOffset: 80 (0x50) + Flags: ...AP... Window: 4050 (scale factor 0x0) = 4050 Checksum: 0x8841, Good UrgentPointer: 0 (0x0) TCPPayload: SourcePort = 5222, DestinationPort = 3578 TLSSSLData: Transport Layer Security (TLS) Payload Data - TLS: TLS Rec Layer-1 HandShake: Server Hello.; TLS Rec Layer-2 HandShake: Certificate.; TLS Rec Layer-3 HandShake: Server Hello Done. - TlsRecordLayer: TLS Rec Layer-1 HandShake: ContentType: HandShake: - Version: TLS 1.0 Major: 3 (0x3) Minor: 1 (0x1) Length: 42 (0x2A) - SSLHandshake: SSL HandShake ServerHello(0x02) HandShakeType: ServerHello(0x02) Length: 38 (0x26) - ServerHello: 0x1 + Version: TLS 1.0 + RandomBytes: SessionIDLength: 0 (0x0) TLSCipherSuite: TLS_RSA_WITH_AES_256_CBC_SHA { 0x00, 0x35 } CompressionMethod: 0 (0x0) - TlsRecordLayer: TLS Rec Layer-2 HandShake: ContentType: HandShake: - Version: TLS 1.0 Major: 3 (0x3) Minor: 1 (0x1) Length: 654 (0x28E) - SSLHandshake: SSL HandShake Certificate(0x0B) HandShakeType: Certificate(0x0B) Length: 650 (0x28A) - Cert: 0x1 CertLength: 647 (0x287) - Certificates: CertificateLength: 644 (0x284) - X509Cert: Issuer: nimbuzz.com,Nimbuzz,NL, Subject: nimbuzz.com,Nimbuzz,NL + SequenceHeader: - TbsCertificate: Issuer: nimbuzz.com,Nimbuzz,NL, Subject: nimbuzz.com,Nimbuzz,NL + SequenceHeader: + Tag0: + Version: (2) + SerialNumber: -1018418383 + Signature: Sha1WithRSAEncryption (1.2.840.113549.1.1.5) - Issuer: nimbuzz.com,Nimbuzz,NL - RdnSequence: nimbuzz.com,Nimbuzz,NL + SequenceOfHeader: 0x1 + Name: NL + Name: Nimbuzz + Name: nimbuzz.com + Validity: From: 02/22/10 20:22:32 UTC To: 02/20/20 20:22:32 UTC + Subject: nimbuzz.com,Nimbuzz,NL - SubjectPublicKeyInfo: RsaEncryption (1.2.840.113549.1.1.1) + SequenceHeader: + Algorithm: RsaEncryption (1.2.840.113549.1.1.1) - SubjectPublicKey: - AsnBitStringHeader: - AsnId: BitString type (Universal 3) - LowTag: Class: (00......) Universal (0) Type: (..0.....) Primitive TagValue: (...00011) 3 - AsnLen: Length = 141, LengthOfLength = 1 LengthType: LengthOfLength = 1 Length: 141 bytes BitString: + Tag3: + Extensions: - SignatureAlgorithm: Sha1WithRSAEncryption (1.2.840.113549.1.1.5) - SequenceHeader: - AsnId: Sequence and SequenceOf types (Universal 16) + LowTag: - AsnLen: Length = 13, LengthOfLength = 0 Length: 13 bytes, LengthOfLength = 0 + Algorithm: Sha1WithRSAEncryption (1.2.840.113549.1.1.5) - Parameters: Null Value - Sha1WithRSAEncryption: Null Value + AsnNullHeader: - Signature: - AsnBitStringHeader: - AsnId: BitString type (Universal 3) - LowTag: Class: (00......) Universal (0) Type: (..0.....) Primitive TagValue: (...00011) 3 - AsnLen: Length = 129, LengthOfLength = 1 LengthType: LengthOfLength = 1 Length: 129 bytes BitString: + TlsRecordLayer: TLS Rec Layer-3 HandShake:

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• ISS7 authentication doesn't work on servername

  - by nLL

  Not sure if I put correct title but here is my problem: Local (home network) IIS 7, default web site bind to any IP on port 81, Anonymous Auth disabled, Windows Auth enabled If I go to 192.168.1.101:81/ I get asked for username and password. If I go to server:81/ nothing is being asked regardless whether connecting from local or another machine on the network. Why is that? Am I doing something wrong?

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• Sending ASCII characters on Mac USB/RS232 cable

  - by Olivier

  Hello, I have a RS232C/USB cable to connect an electronic device to my iMac Intel (MacOSX SnowLeo 10.6.3). Is there a utility program that allows for sending ASCII characters on the USB port that the RS232C device will understand? If possible, I'd rather avoid programming. I'd prefer an Automator script or a simple program with a GUI. Thanks

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• Remote MySQL connection fails (10060)

  - by Stefan Åstrand

  When I am trying to connect to a MySQL database from a remote computer I get a prompt saying: Connection Failed: [HY000] [MySQL][ODBC 5.1 Driver]Can't Connect to MySQL server on 'XXX.XXX.XX.XX' (10060) I have created a user account in the MySQL Administrator and added a host to enable remote access, I have also made an exception for my Windows Firewall on port 3306 but the connection still fails. What is the problem? Thanks!

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• Do laptop docking stations have their own MAC addresses?

  - by chris

  My laptop has an ethernet connection, and there's another on the docking station. Can I connect using both at the same time? Will they have different MAC addresses? I'm assuming the ethernet port on the doc is just a passthru to the onboard ethernet - is that incorrect?

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• ssh connectivity issue

  - by achal tomar

  I have a CentOS 5.5 server hosted in a remote data center. I usually access this server from a Red Hat Enterprise Linux 5 server using the ssh command. Now my organization has implemented a proxy server, this is not allowing me to connect to the VPS server. I see the following error using the command root@<ip address>:-: ssh: connect to host <ip address> PORT 22: connection refused. Can anybody help me with this issue?

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• sub domains with /etc/hosts and apache for gitorious

  - by QLands

  I managed to have a local install of Gitorious. Now I need to finalize the apache integration using a virtual server but nothing seems to work. See for example my /etc/hosts file: 127.0.0.1 localhost 172.26.17.70 darkstar.ilri.org darkstar 172.26.17.70 git.darkstar.ilri.org My vhosts.conf has the following entries: # # Use name-based virtual hosting. # NameVirtualHost *:80 <VirtualHost *:80> <Directory /srv/httpd/htdocs> Options Indexes FollowSymLinks ExecCGI AllowOverride None Order allow,deny Allow from all </Directory> ServerName darkstar.ilri.org DocumentRoot /srv/httpd/htdocs ErrorLog /var/log/httpd/error_log AddHandler cgi-script .cgi </VirtualHost> <VirtualHost *:80> <Directory /srv/httpd/git.darkstar.ilri.org/gitorious/public> Options FollowSymLinks ExecCGI AllowOverride None Order allow,deny Allow from All </Directory> AddHandler cgi-script .cgi DocumentRoot /srv/httpd/git.darkstar.ilri.org/gitorious/public ServerName git.darkstar.ilri.org ErrorLog /var/www/git.darkstar.ilri.org/log/error.log CustomLog /var/www/git.darkstar.ilri.org/log/access.log combined AddOutputFilterByType DEFLATE text/html text/plain text/xml text/javascript text/css application/x-javascript BrowserMatch ^Mozilla/4 gzip-only-text/html BrowserMatch ^Mozilla/4\.0[678] no-gzip BrowserMatch \bMSIE !no-gzip !gzip-only-text/html <FilesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|js|css|swf)$"> ExpiresActive On ExpiresDefault "access plus 1 year" </FilesMatch> FileETag None RewriteEngine On RewriteCond %{DOCUMENT_ROOT}/system/maintenance.html -f RewriteCond %{SCRIPT_FILENAME} !maintenance.html RewriteRule ^.*$ /system/maintenance.html [L] </VirtualHost> Now, when I go with Firefox to darkstar.ilri.org it shows the default Apache screen: "It works!". but when I go to git.darkstar.ilri.org it waits for few seconds then falls to darkstar.ilri.org and the default apache page. No error is reported. If I run httpd -S I get: VirtualHost configuration: wildcard NameVirtualHosts and _default_ servers: *:80 is a NameVirtualHost default server darkstar.ilri.org (/etc/httpd/extra/httpd-vhosts.conf:21) port 80 namevhost darkstar.ilri.org (/etc/httpd/extra/httpd-vhosts.conf:21) port 80 namevhost git.darkstar.ilri.org (/etc/httpd/extra/httpd-vhosts.conf:37) Syntax OK The funny thing is that if I configure gotirious in a host called gitrepository, add 127.0.0.1 gitrepository and go with Firefox to gitrepository.. Gitorious works... But why not with git.darkstar.ilri.org? Many thanks in advance.

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• Nginx: Maintenance page and localhost access

  - by ian.evans

  As I prepare to test some changes, I thought I'd set up a maintenance page block so I could do the testing. Just realized though that the maintenance block examples for nginx take the site down for everyone. How do you serve the maintenance page to visitors will still allowing localhost access. Should I just create a new server block listening on another port and deny all, allow 127.0.0.1?

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• What Are All the Variables Necessary to Create Blackbox Logs for Nginx?

  - by Alan Gutierrez

  There's an article out there, Profiling LAMP Applications with Apache's Blackbox Logs, that describes how to create a log that records a lot of detailed information missing in the common and combined log formats. This information is supposed to help you resolve performance issues. As the author notes "While the common log-file format (and the combined format) are great for hit tracking, they aren't suitable for getting hardcore performance data." The article describes a "blackbox" log format, like a blackbox flight recorder on an aircraft, that gathers information used to profile server performance, missing from the hit tracking log formats: Keep alive status, remote port, child processes, bytes sent, etc. LogFormat "%a/%S %X %t \"%r\" %s/%>s %{pid}P/%{tid}P %T/%D %I/%O/%B" blackbox I'm trying to recreate as much of the format for Nginx, and would like help filling in the blanks. Here's what Nginx blackbox format would look like, the unmapped Apache directives have question marks after their names. access_log blackbox '$remote_addr/$remote_port X? [$time_local] "$request"' 's?/$status $pid/0 T?/D? I?/O?/B?' Here's a table of the variables I've been able to map from the Nginx documentation. %a = $remote_addr - The IP address of the remote client. %S = $remote_port - The port of the remote client. %X = ? - Keep alive status. %t = $time_local - The start time of the request. %r = $request - The first line of request containing method verb, path and protocol. %s = ? - Status before any redirections. %>s = $status - Status after any redirections. %{pid}P = $pid - The process id. %{tid}P = N/A - The thread id, which is non-applicable to Nignx. %T = ? - The time in seconds to handle the request. %D = ? - The time in milliseconds to handle the request. %I = ? - The count of bytes received including headers. %O = ? - The count of bytes sent including headers. %B = ? - The count of bytes sent excluding headers, but with a 0 for none instead of '-'. Looking for help filling in the missing variables, or confirmation that the missing variables are in fact, unavailable in Nginx.

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• montoring service to detect when email is not received

  - by DGM

  I would like to monitor an email server - not whether the port is open and receiving, but rather that a "canary" message sent every so often actually arrives somewhere else. I have had a problem with a server getting firewalled off and no one noticing that cron jobs are not coming from the machine for a few weeks. Of course, the machine itself cannot send out a notification if it is having problems, so this requires an outside service. Any ideas?

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• AdvancedFirewall: Adding a Program to the Inbound Rules

  - by bvanderw

  I am writing an application that contains a web server running on port 50000. On Windows 7, short of turning the firewall off completely, I am having trouble configuring the firewall to allow other computers on the same private LAN to connect to the server. Simply adding the program to the allowed programs list doesn't seem to work. The network connection is set to be a "Home" network (but I am not using Home Networking). Can anyone suggest where I should be looking to troubleshoot this? Bruce

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• NGinx Domain name redirects

  - by Srikar

  Lets say I have a website named xyz.co, I also have other domain names with the same prefix like xyz.com, xyz.it, xyz.co.it Right now nginx works fine with server_name xyz.co in nginx.conf in port 80 I would want all the other domains to redirect to xyz.co also I would want www.* versions of the above to redirect to xyz.co. How can I get this? Is this nginx webserver level changes? or I need to make this changes in DNS?

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• Continuously check nestat output for a particular program

  - by Vihaan Verma

  I have a android emulator running on port 5554. I want to continuously watch the netstat output concerning emulator stuff. right now I have to manually execute this command every time sudo netstat -plant | grep emulator I thought doing something like this would repeat above command automatically every 2 sec. watch sudo netstat -plant | grep emulator but instead it hangs the terminal. How to achieve such functionality ? Thanks

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• Dead laptop screen rewired to external only right from boot-up?

  - by Wesley

  I have a Compaq CQ50-215CA laptop and after a year and 5 months, the screen is completely distorted now. I plan on removing the screen soon, but I realize that the BIOS screen, OS select and Vista boot sequence are all displayed on the laptop screen rather than the external display. Is there some way to get the laptop to display everything (From boot-up to shutdown) on an external display (VGA port)?

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• What ports does Management Studio use to connect to SQL Server (2005)

  - by Martin

  I have SQL Server 2005 operating on a remotely hosted server and wish to access it from my own machine using management studio The firewall on the remote server is allready setup to allow all traffic from my external IP - and that works great. However I have a load balancing router that has a second line attached to it - unfortunatly the second line has a dynamic external IP. I need to therefore set up a rule in the router to always send data from Management studio on the first line - but I need to know the port numbers. Can you advise?

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• Using iptables to forward traffic destined for specific ip via specific interface

  - by shapeshifter

  I want to forward traffic destined for a specific ip from my internal network via a specific interface. I have two interfaces which are currently load balanced. I need all requests for a certain ip to go out via eth0 otherwise my external ip changes and sessions are dropped. eg. all requests from 10.1.1.1/24 to ip 11.22.33.44 on port 443 must go out via interface eth0. How can I do this with iptables?

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• Recomended home ADSL wireless routers

  - by beakersoft

  I'm going to buy a new ADSL wireles broadband router, but i'm not sure what might be a good one. I want it to have some form of QOS on it, and SNMP support so i can see my port usage over MRGT. I've looked at various models but they all seem to have conflicting reviews, i am looking at something along the lines of the Dlink DSL-2740R but any suggestions would be much apreciated

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• How do I Implement VLAN Rate Limiting or QOS for a Cisco 2960?

  - by evolvd

  I have a 2960 that I need to limit the uplink port to 50Mbps for 3 vlans and 350Mbps for another vlan. Would the following config achieve that or is this even possible for the 2960? class-map match-any VLAN50-51-52 match vlan 50-52 class-map match-any VLAN53 match vlan 53 policy-map 50MB_RATE_LIMIT class VLAN50-51-52 police 50000000 5000000 exceed-action drop class VLAN53 police 350000000 35000000 exceed-action drop ! interface GigabitEthernet0/23 service-policy output 50MB_RATE_LIMIT service-policy input 50MB_RATE_LIMIT

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• Timout dead connections to Digi PortServer TS16

  - by MT

  We are using Digi portservers for console management of our routers. Basically users telnet to the Digis on ports 2001-2016 (corresponding to the physical serial port they want to connect to). Does anyone know if there is a way to cause the digi to close/release a user's connection after an period of idle time and if possible, where that time can be specified?

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• Log ports opened by an application

  - by Simon A. Eugster

  I'm searching for something like: tcpdump -p PID # But tcpdump does not know the PID or lsof -i --continuous # But lsof just runs and exits, no «live logging» to log which connections an application opens. In my case, I want to find out to which port git connects when committing. This happens in a fraction of a second, so I cannot use lsof. If there is a lot of traffic, filtering by PID or process name would be useful.

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• Multicast Prblem in Linux Red Hat server

  - by Uma Kant Verma

  I am facing a very strange behavior on my server. I am using a linux cluster.On fail over server my broadcast application halts after 5 minutes.But it is working fine on Primary server. My application process listening on port and send broadcast.It is working 5 mins after that it wait on socket for further packets but it didn't receive anything. Same process is working fine at Primary server. Plz help me.

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• FC SAN network high-error rate simulation

  - by Wieslaw Herr

  Is there a way to simulate a malfunctioning device or a faulty cable in a FC SAN network? edit: I know shutting down a port on a switch is an option, I'd like to simulate high error rates though. In an ethernet network it would be a simple case of adding a transparent bridge that discards a given percent of the packets, but I have absolutely no idea how to tackle that in an Fibre Channel environment...

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• Benefits of setting a webserver in Linux

  - by John Kent

  I wonder what main purposes and benefits can one get after he sets up a webserver running on Linux installed on a VM which is hosted by Windows and that this webserver can be used as a local host for windows ? That is, I have java application that is a webserver made on Linux, I set up the virtual machine for the windows client apps to listen to its (Linux)'s local IP address and port e.g 192.168.50.50:11111 When my webserver runs, I can use http://192.168.50.50/ as the windows's localhost address (instead of 127.0.0.1 as I usually do). Thank you

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