Search Results

Search found 22277 results on 892 pages for 'multiple addresses'.

Page 318/892 | < Previous Page | 314 315 316 317 318 319 320 321 322 323 324 325  | Next Page >

• Update mysql database with arpwatch textfile database

  - by bVector

  I'm looking to keep arpwatch entries in a mysql database to crossreference with other information I'm storing based on mac addresses. I've manually imported the arpwatch database into my mysql database, but being a novice with databases I'm not sure what the best way to continually update the database with new entries without creating duplicates would be. None of the fields can be unique, as even the time is duplicated frequently. I'm not interested in the actual arpwatch events like flip flop or new station, just the mac/ip/time pairings. Would a simple bash (or sql) shell script do the trick? Would it be possible to make the mac address plus the time be a composite key of some sort? the database is called utility, table is arpwatch, columns are mac, ip, time a seperate table named 'hosts' with columns mac, ip, type, hostname, location, notes has mac as the primary key. This table will correlate different ip addresses that a mac had over time using the arpwatch column initial import was done with MySQL Workbench using INSERT INTO commands with creative search and replace on the text file

  Read the article

• Replace an IP address with it's whois using bash

  - by user2099762

  I have a traffic log similar to this "page visited" for xxx.xxx.xxx.xxx at 2013-10-30 and I would like to replace the ip address with the result of it's whois lookup. I can export the ip addresses to a separate file and then do a whois on each line, but im struggling to combine them all together. Ideally i'd like to replace the ip address in the same string and print the new string to a new file. So it would look like "page visited" for example.com at 2013-10-30 Can anyone help Here's what I have so far grep -o '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}' clean_cites.txt > iplist.txt for i in `cat iplist.txt` do OUTPUT=$(geoiplookup -f /usr/share/GeoIP/GeoIPOrg.dat $i) echo $i,$OUTPUT >> visited.txt done Like I said,this produces a separate file with a list of ip addresses and their relevant hostnames, so I either need to search for the ip address in file and and replace it with the text in file b (which will give the ip address and hostname) or replace the ip address in place. Thanks

  Read the article

• creating proper vpn tunnel, when both LANs have the same addressing

  - by meta

  I was following this tutorial http://wiki.debian.org/OpenVPN#TLS-enabled_VPN and this one http://users.telenet.be/mydotcom/howto/linux/openvpn.htm to create openvpn connection to my remote LAN. But both examples assumed that both LANs have different addresses (ie 192.168.10.0/24 and 192.168.20.0/24, check out this image i.stack.imgur.com/2eUSm.png). Unfortunately in my case both local and remote lan have 192.168.1.0/24 addresses. I am able to connect directly on the openvpn server (I can ping it and log in with ssh), but I can't see other devices on the remote LAN (not mentioning accessing them via browser which was the point from the first place). And don't know if the addressing issue may be the reason of that? If not - how to define routes, so I could ping other devices in remote LAN?

  Read the article

• Win 2008 r2 -- client and server are both behind a NAT

  - by Mike Dehari

  I am new to win2008. Have Win2008 R2 installed. Need to know how a client system (Win7), using remote desktop, terminal server, or whatever windows 2008 provides to connect to it (as a user or an admin). Both the client (Win7) and the server (win2008) are inside a NAT (with 192.168......... addresses). Both have real internet addresses (they are in different cities 173.64.......). How can I use the internet from the client (Win7) to connect to the server (Win2008). On both systems, I have "allowed other systems to connect". I am familiar with tcp/ip, ports......etc.

  Read the article

• OpenVPN Client timing out

  - by Austin

  I recently installed OpenVPN on my Ubuntu VPS. Whenenver I try to connect to it, I can establish a connection just fine. However, everything I try to connect to times out. If I try to ping something, it will resolve the IP, but will time out after resolving the IP. (So DNS Server seems to be working correctly) My server.conf has this relevant information (At least I think it's relevant. I'm not sure if you need more or not) # Which local IP address should OpenVPN # listen on? (optional) ;local a.b.c.d # Which TCP/UDP port should OpenVPN listen on? # If you want to run multiple OpenVPN instances # on the same machine, use a different port # number for each one. You will need to # open up this port on your firewall. port 1194 # TCP or UDP server? ;proto tcp proto udp # "dev tun" will create a routed IP tunnel, # "dev tap" will create an ethernet tunnel. # Use "dev tap0" if you are ethernet bridging # and have precreated a tap0 virtual interface # and bridged it with your ethernet interface. # If you want to control access policies # over the VPN, you must create firewall # rules for the the TUN/TAP interface. # On non-Windows systems, you can give # an explicit unit number, such as tun0. # On Windows, use "dev-node" for this. # On most systems, the VPN will not function # unless you partially or fully disable # the firewall for the TUN/TAP interface. ;dev tap dev tun # Windows needs the TAP-Win32 adapter name # from the Network Connections panel if you # have more than one. On XP SP2 or higher, # you may need to selectively disable the # Windows firewall for the TAP adapter. # Non-Windows systems usually don't need this. ;dev-node MyTap # SSL/TLS root certificate (ca), certificate # (cert), and private key (key). Each client # and the server must have their own cert and # key file. The server and all clients will # use the same ca file. # # See the "easy-rsa" directory for a series # of scripts for generating RSA certificates # and private keys. Remember to use # a unique Common Name for the server # and each of the client certificates. # # Any X509 key management system can be used. # OpenVPN can also use a PKCS #12 formatted key file # (see "pkcs12" directive in man page). ca ca.crt cert server.crt key server.key # This file should be kept secret # Diffie hellman parameters. # Generate your own with: # openssl dhparam -out dh1024.pem 1024 # Substitute 2048 for 1024 if you are using # 2048 bit keys. dh dh1024.pem # Configure server mode and supply a VPN subnet # for OpenVPN to draw client addresses from. # The server will take 10.8.0.1 for itself, # the rest will be made available to clients. # Each client will be able to reach the server # on 10.8.0.1. Comment this line out if you are # ethernet bridging. See the man page for more info. server 10.8.0.0 255.255.255.0 # Maintain a record of client <-> virtual IP address # associations in this file. If OpenVPN goes down or # is restarted, reconnecting clients can be assigned # the same virtual IP address from the pool that was # previously assigned. ifconfig-pool-persist ipp.txt # Configure server mode for ethernet bridging. # You must first use your OS's bridging capability # to bridge the TAP interface with the ethernet # NIC interface. Then you must manually set the # IP/netmask on the bridge interface, here we # assume 10.8.0.4/255.255.255.0. Finally we # must set aside an IP range in this subnet # (start=10.8.0.50 end=10.8.0.100) to allocate # to connecting clients. Leave this line commented # out unless you are ethernet bridging. ;server-bridge 10.8.0.4 255.255.255.0 10.8.0.50 10.8.0.100 # Configure server mode for ethernet bridging # using a DHCP-proxy, where clients talk # to the OpenVPN server-side DHCP server # to receive their IP address allocation # and DNS server addresses. You must first use # your OS's bridging capability to bridge the TAP # interface with the ethernet NIC interface. # Note: this mode only works on clients (such as # Windows), where the client-side TAP adapter is # bound to a DHCP client. ;server-bridge # Push routes to the client to allow it # to reach other private subnets behind # the server. Remember that these # private subnets will also need # to know to route the OpenVPN client # address pool (10.8.0.0/255.255.255.0) # back to the OpenVPN server. ;push "route 192.168.10.0 255.255.255.0" ;push "route 192.168.20.0 255.255.255.0" # To assign specific IP addresses to specific # clients or if a connecting client has a private # subnet behind it that should also have VPN access, # use the subdirectory "ccd" for client-specific # configuration files (see man page for more info). # EXAMPLE: Suppose the client # having the certificate common name "Thelonious" # also has a small subnet behind his connecting # machine, such as 192.168.40.128/255.255.255.248. # First, uncomment out these lines: ;client-config-dir ccd ;route 192.168.40.128 255.255.255.248 # Then create a file ccd/Thelonious with this line: # iroute 192.168.40.128 255.255.255.248 # This will allow Thelonious' private subnet to # access the VPN. This example will only work # if you are routing, not bridging, i.e. you are # using "dev tun" and "server" directives. # EXAMPLE: Suppose you want to give # Thelonious a fixed VPN IP address of 10.9.0.1. # First uncomment out these lines: ;client-config-dir ccd ;route 10.9.0.0 255.255.255.252 # Then add this line to ccd/Thelonious: # ifconfig-push 10.9.0.1 10.9.0.2 # Suppose that you want to enable different # firewall access policies for different groups # of clients. There are two methods: # (1) Run multiple OpenVPN daemons, one for each # group, and firewall the TUN/TAP interface # for each group/daemon appropriately. # (2) (Advanced) Create a script to dynamically # modify the firewall in response to access # from different clients. See man # page for more info on learn-address script. ;learn-address ./script # If enabled, this directive will configure # all clients to redirect their default # network gateway through the VPN, causing # all IP traffic such as web browsing and # and DNS lookups to go through the VPN # (The OpenVPN server machine may need to NAT # or bridge the TUN/TAP interface to the internet # in order for this to work properly). push "redirect-gateway def1 bypass-dhcp" push "dhcp-option DNS 8.8.8.8" # Certain Windows-specific network settings # can be pushed to clients, such as DNS # or WINS server addresses. CAVEAT: # http://openvpn.net/faq.html#dhcpcaveats # The addresses below refer to the public # DNS servers provided by opendns.com. ;push "dhcp-option DNS 8.8.8.8" push "dhcp-option DNS 8.8.4.4" # Uncomment this directive to allow different # clients to be able to "see" each other. # By default, clients will only see the server. # To force clients to only see the server, you # will also need to appropriately firewall the # server's TUN/TAP interface. ;client-to-client # Uncomment this directive if multiple clients # might connect with the same certificate/key # files or common names. This is recommended # only for testing purposes. For production use, # each client should have its own certificate/key # pair. # # IF YOU HAVE NOT GENERATED INDIVIDUAL # CERTIFICATE/KEY PAIRS FOR EACH CLIENT, # EACH HAVING ITS OWN UNIQUE "COMMON NAME", # UNCOMMENT THIS LINE OUT. ;duplicate-cn # The keepalive directive causes ping-like # messages to be sent back and forth over # the link so that each side knows when # the other side has gone down. # Ping every 10 seconds, assume that remote # peer is down if no ping received during # a 120 second time period. keepalive 10 120 # For extra security beyond that provided # by SSL/TLS, create an "HMAC firewall" # to help block DoS attacks and UDP port flooding. # # Generate with: # openvpn --genkey --secret ta.key # # The server and each client must have # a copy of this key. # The second parameter should be '0' # on the server and '1' on the clients. ;tls-auth ta.key 0 # This file is secret # Select a cryptographic cipher. # This config item must be copied to # the client config file as well. ;cipher BF-CBC # Blowfish (default) ;cipher AES-128-CBC # AES ;cipher DES-EDE3-CBC # Triple-DES # Enable compression on the VPN link. # If you enable it here, you must also # enable it in the client config file. comp-lzo # The maximum number of concurrently connected # clients we want to allow. ;max-clients 100 # It's a good idea to reduce the OpenVPN # daemon's privileges after initialization. # # You can uncomment this out on # non-Windows systems. ;user nobody ;group nogroup # The persist options will try to avoid # accessing certain resources on restart # that may no longer be accessible because # of the privilege downgrade. persist-key persist-tun # Output a short status file showing # current connections, truncated # and rewritten every minute. status openvpn-status.log # By default, log messages will go to the syslog (or # on Windows, if running as a service, they will go to # the "\Program Files\OpenVPN\log" directory). # Use log or log-append to override this default. # "log" will truncate the log file on OpenVPN startup, # while "log-append" will append to it. Use one # or the other (but not both). ;log openvpn.log ;log-append openvpn.log # Set the appropriate level of log # file verbosity. # # 0 is silent, except for fatal errors # 4 is reasonable for general usage # 5 and 6 can help to debug connection problems # 9 is extremely verbose verb 3 # Silence repeating messages. At most 20 # sequential messages of the same message # category will be output to the log. ;mute 20 I've tried on multiple computers by the way. The same result on all of them. What could be wrong? Thanks in advance, and if you need other information I'll gladly post it. Information for new comments root@vps:~# iptables -L -n -v Chain INPUT (policy ACCEPT 862K packets, 51M bytes) pkts bytes target prot opt in out source destination Chain FORWARD (policy ACCEPT 3 packets, 382 bytes) pkts bytes target prot opt in out source destination 0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED 4641 298K ACCEPT all -- * * 10.8.0.0/24 0.0.0.0/0 0 0 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable Chain OUTPUT (policy ACCEPT 1671K packets, 2378M bytes) pkts bytes target prot opt in out source destination And root@vps:~# iptables -t nat -L -n -v Chain PREROUTING (policy ACCEPT 17937 packets, 2013K bytes) pkts bytes target prot opt in out source destination Chain POSTROUTING (policy ACCEPT 8975 packets, 562K bytes) pkts bytes target prot opt in out source destination 1579 103K SNAT all -- * * 10.8.0.0/24 0.0.0.0/0 to:SERVERIP Chain OUTPUT (policy ACCEPT 8972 packets, 562K bytes) pkts bytes target prot opt in out source destination

  Read the article

• How can I connect via SSH (Putty) to my VMWare machine (Ubuntu)?

  - by orokusaki

  I'm trying to connect to my VMWare (Workstation 7.1.3) machine (Ubuntu Lucid) via SSH. I've read through some other posts, but I can't figure this out. I ran ifconfig, and got a inet addr: and Bcast and Mask: which appear to be IP addresses. If I try to connect via Putty SSH to any of those addresses, it doesn't work. I also tried connecting to my IP address (from whatismyip.com). Note: This is all taking place on the same desktop computer.

  Read the article

• Allow and restrict remote sql server access

  - by Michel

  Hi, I want to expose my sql server instance via the internet. I've been programming asp.net to sql server for a long time, but for the first time i'm hosting the sql server myself instead of the clients server. So what i want to do is move my sql server from my dev machine at home to a virtual server (yet to hire). But of course i don't want anyone to just enter my sql server but just a few persons. So what i was thinking was to allow only a few ip addresses to the sql server instance. Can anyone tell me how i can expose my sql server to the internet and limit the access to the instance to only a few ip addresses? And ehm, if you know even better ways to secure it, i'd be happy, because this is the first time for me :) Michel

  Read the article

• How can I connect via SSH (Putty) to my VMWare machine (Ubuntu)?

  - by orokusaki

  I'm trying to connect to my VMWare (Workstation 7.1.3) machine (Ubuntu Lucid) via SSH. I've read through some other posts, but I can't figure this out. I ran ifconfig, and got a inet addr: and Bcast and Mask: which appear to be IP addresses. If I try to connect via Putty SSH to any of those addresses, it doesn't work. I also tried connecting to my IP address (from whatismyip.com). Note: This is all taking place on the same desktop computer.

  Read the article

• Free IP address management software

  - by TiFFolk

  We are choosing a system for managing our IP address space. So we are looking for a special free software like IPPlan. So what we have nowadays: Ipplan (Beta IPv6 support) SolarWinds IP address tracker (IPv6 support unknown ) IP module of The NOC Project (BTW, take a look of it, seems to be very promising project) (IPv6 support unknown ) phpIP (Does not support IPv6) IP management from RackTables (Does not support IPv6) Do you know about any other special software, like written above? But: No Wiki No DNS No DHCP No spreadsheet Software should provide: Clear view of available addresses Detail listing of all addresses by subnets/search pattern/owners/additional info It must support adding additional info like owner of IP, domain-name, contacts, etc Multi user support Easy interface Software has to be specially written for address management. Scalability Any OS: win, lin, sol, web

  Read the article

• DNS server at router level vs. computer level

  - by Craig

  I've three questions. Is it better/faster/optimal to set up your server's preferred and alternate DNS servers in your OS's network settings or in your router settings? Will it cause problems if it is set up in both places, both pointing to the same IPs? I am running Windows and I have my network assign a static IP to one of my computers. This doesn't allow me to obtain the DNS server addresses from my router automatically. Is there an IP I can put in that will cause it to take the DNS server addresses from the router?

  Read the article

• IPSec tunnel between FortiGate and iPhone / iOS - Works except for DNS / Wins

  - by user57988

  I have configured my Fortigate with a new VPN IPSec tunnel to allow the iOS Cisco client to connect. That works fine. I can RDP to my servers, browse to my servers via IP address, etc. But, the iPhone does not resolve my internal IP addresses. I have added the DNS servers that serve addresses for my internal users, as well as the WINS servers, but the iPhone acts like it doesn't see them at all. config vpn ipsec phase1-interface edit "iPhone_VPN" set type dynamic set interface "wan1" set dhgrp 2 set proposal 3des-sha1 3des-md5 set xauthtype auto set mode-cfg enable set authusrgrp "iPhone_VPN_Users" set ipv4-start-ip 10.10.99.100 set ipv4-end-ip 10.10.99.199 set ipv4-netmask 255.255.0.0 set ipv4-dns-server1 10.10.2.1 set ipv4-dns-server2 10.22.1.80 set ipv4-wins-server1 10.10.2.1 set ipv4-wins-server2 10.22.1.80 set ipv4-split-include "Dialup_VPN_Networks" set psksecret ENC xxxxx next end For whatever reason, as far as I can tell, the iPhone does not 'see' the DNS or WINS entries. I don't know how to check it...

  Read the article

• Why is my router assigning the wrong address via DHCP

  - by Barry

  I have a WRT54G router that is set up to serve out addresses via DHCP. It correctly serves up addresses to every other machine on the network, including another PC, my macbook when connected via wireless, my wife's notebook, and our printer. However, whenever I attach my macbook to the router via an ethernet cable, the address it is given via DHCP is wrong. My local network is set up as 192.168.1.*. However, when my macbook connects with an ethernet cable, it is given the IP 192.168.29.*. Currently, I have the macbook set up with a manual IP address, and all seems to be working fine. Any ideas on what could be causing this?

  Read the article

• Parsing Line Breaks in PHP/JavaScript

  - by Matt G

  I have a text area in my PHP application where users can enter notes in a project. Sometimes this is displayed on the page via PHP and sometimes it is displayed via javascript. The problem is, if the note is across multiple lines (i.e. the user presses enter while entering notes in the text area), it causes the JS to fail. It's fine when it's being done by the PHP. The line of code in question is: var editnotes='<textarea class="desc_text" style="width:20em;" id="notes_editor"><?php print $notes; ?></textarea>'; So, if the note is over multiple lines, the PHP builds the pager as: var editnotes='<textarea class="desc_text" style="width:20em;" id="notes_editor">This is a test note over multiple lines </textarea>'; And this obviously causes problems for the js. So my question is, what can I do to prevent this? As the code is being built by PHP before it even gets to the browser, I'm thinking that the best approach may be to parse it in the PHP so that the output is something more like this: var editnotes='<textarea class="desc_text" style="width:20em;" id="notes_editor">This is<br/>a test note<br/>over multiple lines<br/></textarea>'; Will this work? How would I do it? Thanks

  Read the article

• Free IP address management software

  - by TiFFolk

  We are choosing a system for managing our IP address space. So we are looking for a special free software like IPPlan. So what we have nowadays: Ipplan (Does not support IPv6) SolarWinds IP address tracker (IPv6 support unknown ) IP module of The NOC Project (BTW, take a look of it, seems to be very promising project) (IPv6 support unknown ) phpIP (Does not support IPv6) IP management from RackTables (Does not support IPv6) Do you know about any other special software, like written above? But: No Wiki No DNS No DHCP No spreadsheet Software should provide: Clear view of available addresses Detail listing of all addresses by subnets/search pattern/owners/additional info It must support adding additional info like owner of IP, domain-name, contacts, etc Multi user support Easy interface Software has to be specially written for address management. Scalability Any OS: win, lin, sol, web

  Read the article

• Resolving CloudFlare DNS related mail delivery problems

  - by Andy Castles

  I recently started using CloudFlare and am having a few teething problems. Our domain is netlanguages.com and while we have a lot of sub-domains listen, we are currently only trialling a few of the servers through the CloudFlare CDN (for example, www.netlanguages.com is enabled for CDN, netlanguages.com is not). The actual CDN service seems to be reliable, but the problem that we are having is with DNS, and specifically with mail delivery. The background is that we have contact forms on our web site which use PHP mail() to send the details to end-users' email addresses, with the "from" address of the messages being [email protected] which is a valid address on our mail server. Most of the mails are arriving correctly, but a few specific people are not receiving them. The webserver uses qmail to deliver the messages, and the qmail log files show us some of the errors that the receiving mail servers return when they reject the mail delivery attempt. Two examples: Connected to 94.100.176.20 but sender was rejected./Remote host said: 421 DNS problem (interdominios.netlanguages.com). Try again later Connected to 213.186.33.29 but sender was rejected./Remote host said: 451 DNS temporary failure (#4.3.0) From what I can tell, the receiving SMTP server is doing a DNS lookup of some description on either the host of the "from" email address (netlanguages.com) or the server name given in the EHLO command of the SMTP conversation (in the first example above, interdominios.netlanguages.com), both of which should resolve to non-CloudFlare IP addresses. I've read that the CloudFlare DNS service is very reliable and fast but both of the problems above seem to point to a problem with remote servers unable to do DNS lookups. I should also point out that we changed our DNS to CloudFlare on 6th Feb, and since then started experiencing these mail delivery problems. On 22nd Feb we moved our DNS away from CloudFlare to see if the issues were related to CloudFlare and after a few hours delivery began to work. Then on 26th Feb I moved the DNS back to CloudFlare again and delivery problems started again. The issues definitely seems to be related to DNS, but I don't know if it's a configuration issue, or something else. Finally, I should say that our two DNS MX records point to non-CDN A record IP addresses, interdominios.netlanguages.com (the web and qmail server) also points to a non-CDN A record IP address. Does anyone know what the problem could be here? Any light you can shed on this will be most appreciated. Many thanks, Andy

  Read the article

• Net Screen manager setup

  - by Codezy

  I'm having an issue with our NSMExpress box. I'm trying to manage all our devices, range from ns5gt to ssg320m, and some of those devices have addresses assigned by dhcp from the ISP (like pppoe or dsl). The addresses are actually static but we have the register the MAC address in order to get this address. I can actually add the device in NSM except the IP that's on the untrust side isn't imported in as it's dynamic. Because of this I cannot change many options that pertian to the untrust interface as there is no IP. I've talked to JTAC on this and they didn't know if there was a way to do this or not but then they stated that Tim Hortons does this so I'm confused on how to get this working. Maybe i'm just missing something as I imagine that other people must be doing this as well. Any assistance is appreciated! Furthermore when I import a device this is the message I get: Warnings: Interface ethernet0/0 is a pppoe/dhcp/pppoa client and its ip is NOT IMPORTED because it may be dynamic.

  Read the article

• Electronic Postage provider compatible with Microsoft Word Mail Merge

  - by theguy

  We're looking for an e-postage provider that is capable of working with the Mail Merge function in Microsoft Word 2007. Every now and then we extract addresses from our database to mail letters or notices. We use Mail Merge in Word 2007 to print the address information straight to the envelopes and then run all the envelopes through a Pitney Bowes Postage Meter. It would save us a huge step if we could somehow get an e-postage provider where we can just print out the postage straight to the envelopes along with the addresses at the same time. Anyone know of such a provider or a better solution?

  Read the article

• recipient_delimiter in MS-Exchange

  - by guettli

  Most UNIX mail server support recipient delimiters behind a plus sign in email addresses. [email protected] In the above example "everything" could be any string, and the mail should get into the mail box of the user "user". In postfix it is called recipient_delimiter: http://www.postfix.org/postconf.5.html#recipient_delimiter Is this possible with Exchange 2010? Usecase1: The user can use different email addresses. He can use [email protected] for the communication with "fooshop". If he gets spam mail to this address later, he knows that fooshop has given his address to someone else. Usecase2: We run a ticket system ( http://tbz-pariv.de/software/modwork/ ) and want to add send scans via email to the system. The network scanner can only modify the to-address and we want to insert the ticket type like this [email protected]

  Read the article

• Homework with allocate subnet IP address

  - by Don Lun

  I'm having difficulty solving a subnet allocation homework problem. Assume that a university has an address block 128.205.224.0/19. It has to allocate addresses for 2 departments' networks, each of size 1800, and for 4 offices, of sizes 550, 600, 650, and 750 nodes respectively. Assuming that the university network allocates addresses sequentially from the beginning of the allocated allocated address space, what are the prefix allocations for these subnetworks? I first thought in this way: There should be 6 subnets in the network. So I need 3 bits for the subnets. So 3 + 19 = 22 bits should be the network bits. Then there are only 10 bits left. 2^10 = 1024 < 1800, so this cannot work. Could you guys give me a hint or some thoughts for solving this problem?

  Read the article

• Macintosh computers cannot connect to router unless we re-start the modem and router

  - by dwwilson66

  We have a small office network with DSL and a Netgear WNR-2000 wireless router acting as a DHCP server. There are nine devices connected to the router, wirelessly and wired. Whenever a Mac computer tries to connect, it's unsuccessful until we restart the router. Each of the possible devices that can connect to the network is listed in a table to assign certain IP addresses to certain MAC addresses. I am running WPA-PSK security. I can view the router status and see that the Mac's MAC address is visible to the router, but with a 169.* IP address, even though I'm assigning its MAC address to an IP address within my subnet. All non-Mac devices attached to the network connect properly, and can access the network properly even AFTER the Mac has not successfully connected. The network includes Windows devices, Roku boxes, printers and internet ready TVs. This to me, would point to a DHCP issue with how Mac communicates with my network. One interesting thing to note is that if a Mac connects and is prevented from sleeping, it will stay connected indefinitely; reissuing the security cert from the router works fine. I'm not sure if that's supposed to sever & re-establish a connection with the updated credentials or not, but I do stay connected. If the Mac sleeps and is awakened while the security cert is still valid, it connects fine. If the security certificate expires while the Mac is asleep, we need to restart the router. Restarting the router will ALWAYS assigns the proper IP addresses to the Mac equipment. I have heard anecdotally that Mac doesn't play well with 802.11n; I have not tested any other Wireless protocols. There's a couple issues here: First, I found this on Stack, Mac laptop crashing wireless router, but it's not rally applicable since the router isn't crashing. But, it does give some clues about Mac's accessing the network. I did change my encryption from WEP to WPA-PSK, but after about a week, we're still experiencing the issue. I'm not really sure if there's anything else useful in that question. Second, I'm considering getting a 802.11c router and hooking it up to the wireless N router. the 802.11c router would handle all the Mac traffic, and would be set up as a Mac-only subnet. Everything else would remain as is. However, I'm not sure if this is doable on a technology level...do I need a bridge or is this some way to do this with regular consumer gear?

  Read the article

• How do the routers communicate with each other ?

  - by Berkay

  Let's say that i want make a request a to a web page which is hosted in Europe (i live in USA).My packets only consist the IP address of the web page, first the domain name to ip address transformation is done, then my packets start their journey through to europe. i assume that MAC addresses never used in this situation? are they? First, my packets deal with many routers on way how these routers communicate with each other?, are router addresses added to my packet headers ? Second, is there a specific path router to router comminication or which conditions affect this route? Third to cross the Atlantic Ocean, are cables used or... ?

  Read the article

• private address in traceroute results

  - by misteryes

  I use traceroute to check paths on a remote host, and I notice that there are some private IPs, like 10.230.10.1 bash-4.0# traceroute -T 132.227.62.122 traceroute to 132.227.62.122 (132.227.62.122), 30 hops max, 60 byte packets 1 194.199.68.161 (194.199.68.161) 1.103 ms 1.107 ms 1.097 ms 2 sw-ptu.univ.run (10.230.10.1) 1.535 ms 1.625 ms 2.172 ms 3 sw-univ-gazelle.univ.run (10.10.20.1) 6.891 ms 6.937 ms 6.927 ms 4 10.10.5.6 (10.10.5.6) 1.544 ms 1.517 ms 1.518 ms why there are private addresses near the host? what are the purposes that these private addresses are used? I mean why they want to put the public IP behind private IPs? thanks!

  Read the article

• AnyConnect SSL VPN split tunneling for a single website?

  - by Daniel Lucas

  We have a Cisco ASA 5510. We use split tunneling for AnyConnect SSL VPN clients. All internal addresses are tunnelled. Everything else is routed through the client's own internet connection. We use a SaaS service that only responds to requests when they come from one of our own public IP addresses. Because of this, VPN users are unable to access it currently. Is there a way to specify that a specific website should be tunneled and all others should not? NOTE: Worst case we will use a web bookmark on the clientless portal to tranlate through our network, but I'd like to see if the above is possible first.

  Read the article

• Maintaining state and data context between requests in ASP.NET + EF4

  - by Nick

  I have a EF4/ASP.NET web application that is structured to use POCOs and generic repositories, based essentially on this excellent article. The application is relatively sophisticated with one page that involves selection and linking of multiple entities to build up a complex user profile. This requires access to multiple entity types (20 or so) and associated repositories across multiple posts. When a repository is first accessed it uses the existing data context if exists, else it creates a new context. The problem is that if the lifetime of the context is only per-request (as suggested in the article) then you have to deal with multiple contexts and the complexity around detaching and attaching entities from contexts. My solution is to share the context between posts by creating a single View Model that includes all required repositories (initialised to share the same context) plus any associated data and store this model in a Session variable, retrieving from Session on subsequent page requests. Therefore maintaining the same context across all posts until the profile is saved. This works fine BUT I am concerned that I don't actually know exactly what is stored in the model session variable or more importantly the size of the Session variable. So two questions I suppose: firstly should I look for a better solution to handle the shared context across posts issue (any suggestions welcome)? And secondly what is actually stored in the Session when it includes a repository plus context? Any help appreciated!

  Read the article

• Correctly configure nameservers with cPanel

  - by Marc-Antoine

  I just bought a VPS with cPanel/WHM. My hosting provider gave me 3 dedicated IP addresses with my plan. I read on the internet that I should use 2 IPs for my nameservers and the other one as the main IP for all my shared accounts. Could you tell me why I should do that ? What are the advantages of using IP addresses only for nameservers and another one only for my shared accounts instead of using the same IP for all my nameservers and shared account ? I'm asking because I don't want to use an IP for nothing. Thank you.

  Read the article

< Previous Page | 314 315 316 317 318 319 320 321 322 323 324 325  | Next Page >