If you’ve been torrenting in Windows, you are probably familiar with programs like PeerGuardian, which deny access to and from IP address ranges known to be associated with anti-piracy groups and other privacy invaders. There are a few programs that do pretty much the same thing for Linux, of which my favorite is IPlist. Just download the package, or source, and install. Fire up IPblock, update it, start your torrent client and watch the effects.
There’s a meta-package for Ubuntu that will install everything you need to compile C or C++ programs.
This command will install it for you: sudo aptitude install build-essential
Or you can simply click here.
Though this post isn’t actually about Linux, most Linux computers are attached to an IP network, so it never hurts to have a little help in dealing with the IP addressing scheme.
Netmask Netmask (binary) CIDR Notes _____________________________________________________________________________ 255.255.255.255 11111111.11111111.11111111.11111111 /32 Host (single addr) 255.255.255.254 11111111.11111111.11111111.11111110 /31 Unuseable 255.255.255.252 11111111.11111111.11111111.11111100 /30 2 useable 255.255.255.248 11111111.11111111.11111111.11111000 /29 6 useable 255.255.255.240 11111111.11111111.11111111.11110000 /28 14 useable 255.255.255.224 11111111.11111111.11111111.11100000 /27 30 useable 255.255.255.192 11111111.11111111.11111111.11000000 /26 62 useable 255.255.255.128 11111111.11111111.11111111.10000000 /25 126 useable 255.255.255.0 11111111.11111111.11111111.00000000 /24 “Class C” 254 useable 255.255.254.0 11111111.11111111.11111110.00000000 /23 2 Class C’s 255.255.252.0 11111111.11111111.11111100.00000000 /22 4 Class C’s 255.255.248.0 11111111.11111111.11111000.00000000 /21 8 Class C’s 255.255.240.0 11111111.11111111.11110000.00000000 /20 16 Class C’s 255.255.224.0 11111111.11111111.11100000.00000000 /19 32 Class C’s 255.255.192.0 11111111.11111111.11000000.00000000 /18 64 Class C’s 255.255.128.0 11111111.11111111.10000000.00000000 /17 128 Class C’s 255.255.0.0 11111111.11111111.00000000.00000000 /16 “Class B” 255.254.0.0 11111111.11111110.00000000.00000000 /15 2 Class B’s 255.252.0.0 11111111.11111100.00000000.00000000 /14 4 Class B’s 255.248.0.0 11111111.11111000.00000000.00000000 /13 8 Class B’s 255.240.0.0 11111111.11110000.00000000.00000000 /12 16 Class B’s 255.224.0.0 11111111.11100000.00000000.00000000 /11 32 Class B’s 255.192.0.0 11111111.11000000.00000000.00000000 /10 64 Class B’s 255.128.0.0 11111111.10000000.00000000.00000000 /9 128 Class B’s 255.0.0.0 11111111.00000000.00000000.00000000 /8 “Class A” 254.0.0.0 11111110.00000000.00000000.00000000 /7 252.0.0.0 11111100.00000000.00000000.00000000 /6 248.0.0.0 11111000.00000000.00000000.00000000 /5 240.0.0.0 11110000.00000000.00000000.00000000 /4 224.0.0.0 11100000.00000000.00000000.00000000 /3 192.0.0.0 11000000.00000000.00000000.00000000 /2 128.0.0.0 10000000.00000000.00000000.00000000 /1 0.0.0.0 00000000.00000000.00000000.00000000 /0 IP space Net Host Total Net Addr Addr Addr Number Class Range NetMask Bits Bits of hosts ———————————————————- A 0-127 255.0.0.0 8 24 16777216 (i.e. 114.0.0.0) B 128-191 255.255.0.0 16 16 65536 (i.e. 150.0.0.0) C 192-254 255.255.255.0 24 8 256 (i.e. 199.0.0.0) D 224-239 (multicast) E 240-255 (reserved) F 208-215 255.255.255.240 28 4 16 G 216/8 ARIN - North America G 217/8 RIPE NCC - Europe G 218-219/8 APNIC H 220-221 255.255.255.248 29 3 8 (reserved) K 222-223 255.255.255.254 31 1 2 (reserved) (ref: RFC1375 & http://www.iana.org/assignments/ipv4-address-space ) ( http://www.iana.org/numbers.htm ) ———————————————————- The current list of special use prefixes: 0.0.0.0/8 127.0.0.0/8 192.0.2.0/24 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 169.254.0.0/16 all D/E space (ref: RFC1918 http://www.rfc-editor.org/rfc/rfc1918.txt ) ( or ftp://ftp.isi.edu/in-notes/rfc1918.txt ) (rfc search: http://www.rfc-editor.org/rfcsearch.html ) ( http://www.ietf.org/ietf/1id-abstracts.txt ) ( http://www.ietf.org/shadow.html ) Martians: (updates at: www.iana.org/assignments/ipv4-address-space ) no ip source-route access-list 100 deny ip host 0.0.0.0 any deny ip 0.0.0.0 0.255.255.255 any log ! antispoof deny ip 0.0.0.0 0.255.255.255 0.0.0.0 255.255.255.255 ! antispoof deny ip any 255.255.255.128 0.0.0.127 ! antispoof deny ip host 0.0.0.0 any log ! antispoof deny ip host [router intf] [router intf] ! antispoof deny ip xxx.xxx.xxx.0 0.0.0.255 any log ! lan area deny ip 0/8 0.255.255.255 any log ! IANA - Reserved deny ip 1/8 0.255.255.255 any log ! IANA - Reserved deny ip 2/8 0.255.255.255 any log ! IANA - Reserved deny ip 5/8 0.255.255.255 any log ! IANA - Reserved deny ip 7/8 0.255.255.255 any log ! IANA - Reserved deny ip 10.0.0.0 0.255.255.255 any log ! IANA - Private Use deny ip 23/8 0.255.255.255 any log ! IANA - Reserved deny ip 27/8 0.255.255.255 any log ! IANA - Reserved deny ip 31/8 0.255.255.255 any log ! IANA - Reserved deny ip 36-37/8 0.255.255.255 any log ! IANA - Reserved deny ip 39/8 0.255.255.255 any log ! IANA - Reserved deny ip 41-42/8 0.255.255.255 any log ! IANA - Reserved deny ip 50/8 0.255.255.255 any log ! IANA - Reserved deny ip 58-60/8 0.255.255.255 any log ! IANA - Reserved deny ip 69-79/8 0.255.255.255 any log ! IANA - Reserved deny ip 82-95/8 0.255.255.255 any log ! IANA - Reserved deny ip 96-126/8 0.255.255.255 any log ! IANA - Reserved deny ip 127/8 0.255.255.255 any log ! IANA - Reserved deny ip 169.254.0.0 0.0.255.255 any log ! link-local network deny ip 172.16.0.0 0.15.255.255 any log ! reserved deny ip 192.168.0.0 0.0.255.255 any log ! reserved deny ip 192.0.2.0 0.0.0.255 any log ! test network deny ip 197/8 0.255.255.255 any log ! IANA - Reserved deny ip 220/8 0.255.255.255 any log ! IANA - Reserved deny ip 222-223/8 0.255.255.255 any log ! IANA - Reserved deny ip 224.0.0.0 31.255.255.255 any log ! multicast deny ip 224.0.0.0 15.255.255.255 any log ! unless MBGP-learned routes deny ip 224-239/8 0.255.255.255 any log ! IANA - Multicast deny ip 240-255/8 0.255.255.255 any log ! IANA - Reserved filtered source addresses 0/8 ! broadcast 10/8 ! RFC 1918 private 127/8 ! loopback 169.254.0/16 ! link local 172.16.0.0/12 ! RFC 1918 private 192.0.2.0/24 ! TEST-NET 192.168.0/16 ! RFC 1918 private 224.0.0.0/4 ! class D multicast 240.0.0.0/5 ! class E reserved 248.0.0.0/5 ! reserved 255.255.255.255/32 ! broadcast ARIN administrated blocks: (http://www.arin.net/regserv/IPStats.html) 24.0.0.0/8 (portions of) 63.0.0.0/8 64.0.0.0/8 65.0.0.0/8 66.0.0.0/8 196.0.0.0/8 198.0.0.0/8 199.0.0.0/8 200.0.0.0/8 204.0.0.0/8 205.0.0.0/8 206.0.0.0/8 207.0.0.0/8 208.0.0.0/8 209.0.0.0/8 216.0.0.0/8 ———————————————————- well known ports: (rfc1700.txt) www.iana.org/assignments/port-numbers protocol numbers: www.iana.org/assignments/protocol-numbers www.iana.org/numbers.htm ICMP(Types/Codes) Testing Destination Reachability & Status (0/0) Echo-Reply (8/0) Echo Unreachable Destinations (3/0) Network Unreachable (3/1) Host Unreachable (3/2) Protocol Unreachable (3/3) Port Unreachable (3/4) Fragmentaion Needed and DF set (Pkt too big) (3/5) Source Route Failed (3/6) Network Unknown (3/7) Host Unknown (3/9) DOD Net Prohibited (3/10) DOD Host Prohibited (3/11) Net TOS Unreachable (3/12) Host TOS Unreachable (3/13) Administratively Prohibited (3/14) Host Precedence Unreachable (3/15) Precedence Unreachable Flow Control (4/0) Source-Quench [RFC 1016] Route Change Requests from Gateways (5/0) Redirect Datagrams for the Net (5/1) Redirect Datagrams for the Host (5/2) Redirect Datagrams for the TOS and Net (5/3) Redirect Datagrams for the TOS and Host Router (6/-) Alternate-Address (9/0) Router-Advertisement (10/0) Router-Solicitation Detecting Circular or Excessively Long Routes (11/0) Time to Live Count Exceeded (11/1) Fragment Reassembly Time Exceeded Reporting Incorrect Datagram Headers (12/0) Parameter-Problem (12/1) Option Missing (12/2) No Room for Option Clock Synchronization and Transit Time Estimation (13/0) Timestamp-Request (14/0) Timestamp-Reply Obtaining a Network Address (RARP Alternative) (15/0) Information-Request (16/0) Information-Reply Obtaining a Subnet Mask [RFC 950] (17/0) Address Mask-Request (18/0) Address Mask-Reply Other (30/0) Traceroute (31/0) Conversion-Error (32/0) Mobile-Redirect Ref: [RFC 792] [RFC 896] [RFC 950] [RFC 1016] www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_5_3/cofigide/qos.htm#19774
So our humble little blog here has been listed on AllTop’s Linux page. If you haven’t checked it out, I heartily encourage you to. AllTop is one of those blog collectors, but it is set up very nicely, with a clean, sharp UI. A simple front page, broken down into eight major categories, each with subcategory links. Click on one of those tacks you to a bunch of subject-related blogs, listing the last five blog posts. Again, the interface is clean and simple, with plenty of great links.
And in the Linux AllTop page, you’ll find us listed. You’ll have to scroll down a bit, but you can see us there. Keep a browser tab opened to this page and you’ll stay on top of the Linux world for sure.
UIF is a proprietary disk image format created by MagicISO. As far as I’m concerned, it’s utterly worthless. If you happen to get an image file in this wretched format, you can use UIF2ISO to convert it to an ISO file, usable by pretty much anything out there.
After you download UIF2ISO from the author’s page, extract, compile and install.
Usage: uif2iso <input.UIF> <output.ISO>
Given the following, how would you start a graphical program (Firefox, Evolution, Deluge) from an ssh session?
Hi everyone! Normally, I try to give advice on this site, but today I’m asking for it. I need to setup a proxy server. This can’t just be your average web proxy server though, it will need to support encrypted communication with the client, as well as authentication. I’d like to be able to allow or deny the type of traffic being sent through it (web, bittorrent, other p2p), and it will need to scale to potentially thousands of concurrent sessions.
I’m not looking for someone to hold my hand for the entirety of this project, but if you can give me some ideas on where to start, please share in the comments.
Thanks,
J
You can do so much with Linux. If you don’t need Active Directory, it’s a great file server. The LAMP stack pretty much runs the Intrenet now, and more companies are taking a serious look at Linux as a desktop OS. That’s not enough though. Cell phones are coming with Linux-based operating systems and Cisco is even working on using Linux as the next OS for its routers.
The PBX (Public Branch Exchange) market is even embracing solutions built around the open source kernel.
Reports come out several times a year claiming that “this is the year for Linux.” I don’t think Linux will take over the desktop market any time soon though. I think that OsX will be the first to dethrone Windows on the desktop. Not that I like OsX, it’s difficult to work with for anyone with Windows or *nix experience, until we find the terminal program, but the fact that Windows is out of the way will open even more doors for Linux.
Check out this article about how a guy from Alabama (my sweet home) who turned the commercial PBX market on its head.
If you run a program in a terminal window that generates more output than you can see in one screen, what are some ways to view the output one screenfull at a time?
Which runlevel only allows root access?