Linux tftp listens on all interfaces and IPs by DEFAULT Security Risk Hole Solution

Just edit your tftp file for xinetd like this:

*Change the IP to be the IP of the interface you want to listen on.

To test if your tftp is available on a certain IP range use nc -u yourip 69 to see if you can still connect (/var/log/messages or /var/log/syslog) should show the connection if it is open.

Oct 13 23:20:34 01 xinetd[26631]: Started working: 1 available service
Oct 13 23:20:40 01 xinetd[26631]: START: tftp pid=26634 from=192.5.9.1

 

service tftp
{
        socket_type             = dgram
        protocol                = udp
        wait                    = yes
        user                    = root
        server                  = /usr/sbin/in.tftpd
        server_args             = -s /tftpboot
        disable                 = no
        bind                    = 10.10.10.1
        per_source              = 11
        cps                     = 100 2
        flags                   = IPv4
}


Tags:

linux, tftp, listens, interfaces, ips, default, solutionjust, edit, xinetd, ip, interface, nc, yourip, var, syslog, oct, pid, socket_type, dgram, protocol, udp, user, server, usr, sbin, tftpd, server_args, tftpboot, disable, bind, per_source, cps, flags, ipv,

Latest Articles

  • How To Add Windows 7 8 10 11 to GRUB Boot List Dual Booting
  • How to configure OpenDKIM on Linux with Postfix and setup bind zonefile
  • Debian Ubuntu 10/11/12 Linux how to get tftpd-hpa server setup tutorial
  • efibootmgr: option requires an argument -- 'd' efibootmgr version 15 grub-install.real: error: efibootmgr failed to register the boot entry: Operation not permitted.
  • Apache Error Won't start SSL Cert Issue Solution Unable to configure verify locations for client authentication SSL Library Error: 151441510 error:0906D066:PEM routines:PEM_read_bio:bad end line SSL Library Error: 185090057 error:0B084009:x509 certif
  • Linux Debian Mint Ubuntu Bridge br0 gets random IP
  • redis requirements
  • How to kill a docker swarm
  • docker swarm silly issues
  • isc-dhcp-server dhcpd how to get longer lease
  • nvidia cannot resume from sleep Comm: nvidia-sleep.sh Tainted: Linux Ubuntu Mint Debian
  • zfs and LUKS how to recover in Linux
  • [error] (28)No space left on device: Cannot create SSLMutex Apache Solution Linux CentOS Ubuntu Debian Mint
  • Save money on bandwidth by disabling reflective rpc queries in Linux CentOS RHEL Ubuntu Debian
  • How to access a disk with bad superblock Linux Ubuntu Debian Redhat CentOS ext3 ext4
  • ImageMagick error convert solution - convert-im6.q16: cache resources exhausted
  • PTY allocation request failed on channel 0 solution
  • docker error not supported as upperdir failed to start daemon: error initializing graphdriver: driver not supported
  • Migrated Linux Ubuntu Mint not starting services due to broken /var/run and dbus - Failed to connect to bus: No such file or directory solution
  • qemu-system-x86_64: Initialization of device ide-hd failed: Failed to get