Introducing the Cisco 7. Wonder. Phone ? The disturbing part of this photo is that it shows the lengths to which Cisco will go to provide literally picture- perfect documentation for how to hang this phone on a wall while there is close to ZERO documentation for how to use it as a SIP telephone with anything other than Cisco's proprietary Call. Manager telephone system. It's almost like they don't want it used that way. Since the entire world is moving to SIP, Cisco obviously needed to be able to say they supported SIP .. If you've never had to deal with Cisco or, better yet, Cisco's web site, lucky you!

Patches released for Open Enterprise Server 2015 (OES2015). This document (7016875) is provided subject to the.

Introducing the Cisco 7. Wonder. Phone ? The disturbing part of this photo is that it shows the lengths to which Cisco will go to provide literally picture- perfect documentation for how to hang this phone on a wall while there is close to ZERO documentation for how to use it as a SIP telephone with anything other than Cisco's proprietary Call. Manager telephone system. It's almost like they don't want it used that way. Since the entire world is moving to SIP, Cisco obviously needed to be able to say they supported SIP .. If you've never had to deal with Cisco or, better yet, Cisco's web site, lucky you!

For those of us that ran Internet services in a former life, there was Cisco or Cisco when it came to routers. Luckily, that's not the case in the IP telephony business, and fortunately it's now changed in the router business as well. Creativity and software quality have gone down the rat hole. And Cisco shareholders wonder why their company is losing market share. It wasn't quite right to reduce Cisco's beautiful (and I do mean beautiful) new COLOR IP telephone to a nuts- and- bolts image.

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But we're trying to paint a picture of how it works, not how it looks. The good news for Asterisk users is that IF you ever get the 7. Asterisk system, you'll never go back.

The quality of calls with the Cisco 7. G is head- and- shoulders above all of the competition. Having said that, it's more than a little disappointing to encounter Version 8 of their SIP firmware and discover that it functions about like a . Many things don't work. Some buttons still crash the phone. And it appears that Cisco has little or no intention to make things much better ever.

You might be asking, . The phone can be purchased for under $5. The Call. Manager license adds another $2. You'd want a monopoly, too, with that sort of pricing structure. SPECIAL NOTE: We have one, gently used Cisco 7.

It actually was used to prepare this article. Make us an offer, or we'll make you a deal you can't refuse.

If you're interested, contact us. So how do we get the damn phone to work with Asterisk? Well, here's where it gets a little tricky. The first thing you should do is watch Kerry Garrison's great video on setting up the phone. You'll find it at Asterisk. Tutorials. com. What you'll learn in the tutorial is that most of the configuration of the phone is done through XML config files which are ordinary text files with nested (special) keywords in brackets that tell the phone how and what to do when.

You then copy these config files to a TFTP server and reboot the phone after pointing it to the IP address of your TFTP server. If you don't have a TFTP server, Kerry will even tell you about a great one for Windows that you can download for free: TFTPd.

As with everything Cisco, there are a few instant gotcha's with the installation process. First, Cisco provides no documentation with the phone and has published no documentation on the XML config files.

The official answer would be that you don't need to know nothin' 'bout no stinkin' config files. Just use (buy!) their Call. Manager, and it generates the config files out of thin air. The only problem with the Cisco Scenario is that then your phone will only talk to the Call.

Manager, not Asterisk. In fairness, we should note that Cisco documentation is available for the SIP firmware on the phone, but it all pertains to Call. Manager. And, by the way, be sure to order the phone with SIP firmware, not SCCP, and a 7. Power Supply or you're really S. O. L. So it's Go Back to Go time. The second gotcha is that the phone has to know where to find the TFTP server before you can change anything.

You can't manually set the TFTP IP address with something like telnet or ssh. That would be too simple. You can set it on the phone keypad provided the existing firmware is configured to allow changes. The default firmware load isn't.

Well, you'll need a DHCP server that understands Option 6. What Option 6. 6 does is store the IP address of your favorite TFTP server so that when a client obtains an IP address for IP access, it also can obtain an IP address for a TFTP server containing updated config files.. If you don't have a router with DHCP that supports Option 6. TFTPd. 32 includes it as well. Gotcha #3 is that you can't just run TFTPd.

LAN and expect things to work. Because your existing LAN probably already has a DHCP server (without Option 6. IP addresses. Can't we just disable our existing DHCP server? Absolutely, but you'll wipe out any preconfigured IP addresses that depend upon your DHCP pool of IP numbers which is the way most mere mortals reserve IP addresses on LANs without having to manually configure IP addresses, and subnet masks, and DNS server addresses for every device on your LAN. Then replace the network cable connected to your PC with a crossover cable. Now connect the other end of the crossover cable to your shiny new Cisco phone.

When the phone is rebooted, it will find the only remaining DHCP server in town (with Option 6. DHCP pool since this number will be grabbed by your Windows machine when you plug in the crossover cable): the TFTPd. DHCP server. If this sounds convoluted, hang on to your hat 'cause we're just getting started. Remember, we haven't changed anything yet!

The Right Way, The Wrong Way, and The Cisco Way. While we're on a roll with DHCP and TFTP, let's assume for a moment that we already have your phone making calls through your Asterisk server which it isn't, of course. Now you've decided that you'd like a different ring tone or picture on your phone. Can the phone handle it?

To perform either of these feats of magic, the drill goes something like this. You create another XML config file for both the pictures and the ring tones. Then you load the config files in a secret place on your TFTP server. Then you copy your new ring tones and cover art to the same secret locations. Now you go to each phone and drill down through layer after layer of menu options until you finally come to a screen which will display available ring tones or background images. The phone then will kick off a TFTP session using your TFTP server (which hopefully is still on line).

Once it retrieves the file names or thumbnails after querying the XML config file, you get a list of choices. Highlight the desired choice and the phone makes another TFTP connection to download the desired file into your phone. Rube Goldberg would be proud of what Cisco engineers have been able to dream up. Ever heard of HTTP and a web page. There's even HTML support already on the damn phone. Of course, it doesn't work, but who cares.

Why fix it when you can dream up an installation scenario like this one? Who in their right mind would ever design an installation system which forces you to keep an insecure TFTP server running on your network all the time? Call us picky, but here's another little detail. One disgruntled employee with a crossover cable and a notebook computer running TFTPd, and your entire Cisco phone system runs the very real risk of being toast. The problem with Option 6. TFTP server. Holding down the pound key for 1. MY PHONE. And, this is from a company that has been thinking about network security longer than almost anybody.

We should point out that there is a phone. Password field in the config file which defaults to blank, and it may or may not help on the security front. My guess is that most companies never touch it. And, with the ink barely dry on our maintenance contract and given the other configuration quirks of this phone, we were reluctant to test this password feature for fear of turning the device into little more than a boat anchor. We'll leave that testing for you to try out on your new $5.

If there's some other, more obtuse security feature (such as tftp. Default) that we've missed, we're pretty confident that some diehard Cisco cheerleader will point it out to us in a comment shortly. In the meantime, we'll continue our head scratching. Memo to Cisco: There are lots of reasons that folks expect documentation with their equipment. Not the least of these is SECURITY. Earth to Asterisk. Well, enough of the Cisco bashing.

We really do want to get this phone working with Asterisk. We wouldn't trade the Cisco 7.

ANY other phone on the planet. The voice quality with both the headset and the speakerphone is that good!

For openers, to use the phone with Asterisk, you'll need at least Asterisk 1. Asterisk 1. 0. 9 won't cut it. And the 7. 97. 0 ought to work fine with any version of Trix. Box as well as Asterisk@Home versions going back to 2. Asterisk 1. 2. Now for the fun part. First, download the Sample Config Files from Kerry Garrison's Asterisk.

Tutorials. com site. Unzip the file which will give you a configs folder with three files. Turn your phone over and write down the MAC address which is the number beginning with 0. Rename the SEP0. 00. E8. 4E8. E3. D5. cnf. MAC address you wrote down for 0. E8. 4E8. E3. D5 in the existing file name.

If this config file name doesn't include the actual MAC adddress of your phone, your phone won't process any updates. Now press the Settings button on your phone. It's the one on the right side with a check mark on it. Then press 5, 3 and write down the version of the firmware that's loaded on your phone. If it doesn't start with SIP, send it back and tell the vendor that you requested a Cisco 7.

SIP firmware. Unless the firmware version is SIP7. S, you'll need to change the firmware version in both the SEP config file we renamed above and also in the XMLDefault. Use the Windows Text. Edit program to search for SIP7. S and replace it with the firmware version you wrote down. Before we get too far along, let's be sure that your phone is locked in such a way that you can't manually specify a TFTP server's IP address. Press the Settings button again and then 2, 8.

A closed padlock should appear in the upper right corner of the display. Pressing **# will attempt to unlock the phone. The padlock should open within a few seconds.

But if you work a lot in Emacs, then, you should place the following in your ~/. Pa - D - R' After loging in again (or source . An example is listed below.

And the contents of . For example if you execute the following, which is true you get zero. Alsocheckyourfedoraordebianinstall. Thispackageallowsyoutoeasilydownloadpackagesfromftpsites.

Thisisanexampleofconnecttoanftpsite,withasubdirectory,anddownloadingallinonecommand. It's more of an exercise in xargs.

The above statement is the same as $ ls . The 1. 97. 0 program will run next Auguest 2 even though the year 1. Also the following is helpful. The last one is a tutorial .

It appears that comcast does not support ssl or TLS. Finally, create a . All echos are listed in the comment field. TIP 1. 25: IP forwarding, IP Masquerade # echo 1 > /proc/sys/net/ipv.

Suppose you have 2 SCSI drives (sda and sdb). By default grub is setup on sda; but, you need to enable it for sdb (/dev/hdb for ide) as follows: grub> device (hd.

Checking if . 1. 6 sectors are embedded. Note that there is a listing for both sda. Press 'e' 2. Press 'e' again 3. Append 'single' to the kernel version listing See http: //linuxgazette. TIP 1. 30: mtr - matt's traceroute.

This is an advanced traceroute that keeps . UNKNOWN- 2. 16- 1. Then specify the < base> #< value>.

The example below is 2. Try iptraf http: //iptraf. TIP 1. 35: enscript - convert text files to Post.

Script. TIP 1. 36: dd and tar - blocking factor. How to determine the blocking factor, block size so that tar and dd can work together. This will be created with dd as follows: $ mkdir 1 $ dd if=/dev/zero of=disk- image count=4.

First rewind the tape. These examples use /dev/nst.

Make sure to substitute your values if needed. If you get an I/O error, which could happend if you used a different blocking factor above, then, you may need to increase the bs to 2. Again 5. 12 * blocking- factor = block size used in dd command.

You can now use these numbers to . But, first tar will be used to create the file locally. Remember 6. 4k is equal to 6.

It will not write data. Most of the time a high . The tape drive is on .

All changes are in httpd. Redirect. Match (.*)\. Redirect /service http: //foo. If more than one DNS record points to the server, then, it's possible to redirect based upon which DNS entry was used in the web query.

We'll call this intermediate computer middle . The user will be mchirico. To quickly find files on your system use the .

R> N< -2^(0: 6)> N. There is no need to reboot, since you'll be creating a virtual filesystem. First create a mount point. Since I have many of these files, I created a special directory . That makes the size: 4. You'll run into errors if you try to run quotacheck, say .

You need to turn off quotas first . Note you only need to run quotacheck once, or when doing maintenance after a system crash. This user has a hard limit of 5.

So when this user tries to create 2 more files (bring this over the limit of 5) then he will get the following error as demonstrated below. For the example above, this file should look as follows: $ cat /etc/quotatab # # This is sample quotatab (/etc/quotatab) # Here you can specify description of each device for user # # Comments begin with hash in the beginning of the line # Example of description /dev/loop. This is loopback device Just run the following as root: $ warnquota By the way, if you want to change the grace period, it can only be done on a filesystem basis. Yes, below is an example where I'm running this on FC3, on the root of the filesystem .

This assumes that you have installed the quota package. Like the above statement, this will have to be run with root priviliges. This creates the quota database files, and it can take a long time if it is a large full filesystem.

It's demonstrated here, because at this point quota's have not been turned on. Shown below is the command to setup quotas for user . Shown below this user has used 1. He has used 3. 08. The following is done as root. See (TIP 1. 86 and TIP 6) for creating groups and adding users to groups. However, when files are created in his home directory they do not go against the .

Then, turn the quotas back on . This command needs to be done with root privileges. Note that when you do the . I have noticed that this is not the case by default.

The following should be placed in ? You can use this program in combination with ssh. This program does more than just copy files. Once a file has been copied, you can dictate other actions to be performed. Or you can hold off copying all together if the destination is running low on inodes, or disk space.

Obviously, you would substitute your computer names. This file will access hosts . Once these files are updated, a mail check (. This happens twice, once for each file. Once this file is copied, the rights are modified to . This command is run from the computer . All output will go in the file .

Note that it is one number less. Take a look at the contents of . To prevent root from logging in on this device, take out tty. Note, you can always login as another user, then, su to root.

Try the following to get a quick take on this function, which increments each value in the array a; #!/usr/bin/perl @a = (1,2,3); map . A simple and useful technique.

It's also possible to run commands when someone from this computer tries to ssh in. This example sends mail. For example, to make syslog reread its configuration file: $ pkill - HUP syslogd Another command command is . Below are some examples. The number of pages it reads is dependent on the amount of memory in your machine. Values above 2 ^ 5 don't make much sense for swap because we only cluster swap data in 3.

Memory map areas are used as a side- effect of calling malloc, directly by mmap and mprotect, and also when loading shared libraries. This example assumes hda, and you can see some of the kernel settings: $ ls /sys/block/hda/queue/iosched back. This is a very comprehensive package. You copy it to each filesystem you want to run this program on.

Below are some quick start commands. It limits the record size to 1. But, here is a way that you can get date and time listed as well. You can find this file, the . You have a webserver on 1.

When people query this webserver, you want them to goto 1. In fact, they always make their web hits to 1. Below is the tcpdump showing all traffic is relayed via 1. You can see that the 1st server . The third line shows the 2nd server . This file reads data from .

The following shows how to create the group . The following should be done as root, and assumes the account . Or, the next time he logs in he will have access to this group. Above, I'm running 2. I'm going to go for 2. You want the signed file as well. You should find it in the following direcotry .

It will ask for a few questions on . The make installs below will have to be done with root privileges.

The commands below are done as root. For this example the server is tape. But look at the default rights, assuming you ran saslpasswd. Jul 3. 1 0. 9: 5.

We need to correct this in step 4. Note in /etc/imapd.

I look at this directory I see the socket directory. However, after staring /etc/init. Note, you may have to go back to step 3 to add them to /etc/sasldb. We'll do this as root to the chirico account. Normally everything should work. Now how do you configure your ? For this example, assume my password is .

MCOOKIE=$(mcookie)$xauthadd$(hostname)/unix: 1. MIT- MAGIC- COOKIE- 1$MCOOKIE$xauthaddlocalhost/unix: 1.

MIT- MAGIC- COOKIE- 1$MCOOKIEAgain,notethatyouhavetoaddthisfor. EACHconnection. Soifyouwanted. MCOOKIE=$(mcookie)$xauthadd$(hostname)/unix: 2. MIT- MAGIC- COOKIE- 1$MCOOKIE$xauthaddlocalhost/unix: 2. MIT- MAGIC- COOKIE- 1$MCOOKIEOnsqueezel.

If: 1istakebelowtry: 2. Thevt. 12isforswitchingtoctl- alt- F1.

PATH=/home/src/qt/qt- x. PATH$export. PATHStep. Compile. Your. Source.

Myprogramsourceislocatedin/home/chirico/widgetpaint$cd/home/chirico/widgetpaint$qmake- project$qmake- configrelease$make. TIP2. 32: SELinux- FC6quickfixforproblems. Usingsystem- config- securityleveltofixsimpleproblem.(Alsosee. TIP2. 38). If you stuck and cannot figure out what device your NIC is registering under, perhaps the kernel has loaded from boot, then take a look under the following: . If fact you can control which NIC starts at which device.

Copy the module under the /lib/modules/$(uname - r)/ directory. So if something isn't getting loaded, you may want to touch the file. TIP 2. 58: Generate a uuid: uuidgen - command- line utility to create a new UUID value uuidgen The above command generated the following uuid: c. Each time this command is run a new uuid is generated. This is needed reading for package developers. The hidden return is ctl- q ctl- j.

Also, reboot too to make sure the swap file works on restart and that /etc/fstab was correctly configured. Or basically this turns your Linux box into a router where you just plug in devices.

This example set IP address 1. IP address of the bridge. Since this box is also a server, you'll need to setup the default gateway, which only affects this computer. The next commands block the ports into this device. Now, my Linux box here is the Soekris net.

I'm blocking port 1. IP address 1. 92. The example below prevents the device attached on eth. If you want to block all traffic from a device attached to this router, you may want to consider using ebtables, which is a layer 2 protocol (operating at a lower level than iptables).

Suppose we wanted to slow down traffic on eth. First, lets get some readings before making changes. Note that soekris.