slacky.eu

Method 1 ------------------------------------------------------

The following config will allow the Linux machine (10.1.1.2) to read
the IP address from the DHCP interface on the Cisco router (eth0) as
user ddclient. Since ddclient is configured with a priv level of 1 it
cannot do anything except look at the routers stats, ip addresses,
etc. This should be pretty harmless even if ddclient's password were
to be discovered.

This has been tested with Cisco IOS 12.1(5)T5 running on a Cisco 2621
router.

Cisco Router Config (Assuming eth0 is DHCP interface)
-----------------------------------------------------
user ddclient password password
user ddclient priv 1
ip http auth local
ip http access-class 99
ip http port 1021
ip http server
access-list 99 permit host 10.1.1.2

DDClient Config
---------------------------------------------------
use=cisco, fw=10.1.1.1, if=eth0, fw-login=ddclient, fw-password=password


Method 2 ------------------------------------------------------

use=fw
fw=192.168.1.1/exec/show/interfaces/CR
fw-skip=FastEthernet0/0
fw-login=ddclient
fw-password=xxxxxxxx

\######################################################################
##
## Define default global variables with lines like:
## var=value [, var=value]*
## These values will be used for each following host unless overridden
## with a local variable definition.
##
## Define local variables for one or more hosts with:
## var=value [, var=value]* host.and.domain[,host2.and.domain...]
##
## Lines can be continued on the following line by ending the line
## with a \
##
######################################################################
daemon=300 # check every 300 seconds
syslog=yes # log update msgs to syslog
mail=root # mail all msgs to root
mail-failure=root # mail failed update msgs to root
pid=/var/run/ddclient.pid # record PID in file.
#
#use=watchguard-soho, fw=192.168.1.1:80 # via Watchguard's SOHO FW
#use=netopia-r910, fw=192.168.111.1:80 # via Netopia R910 FW
#use=smc-barricade, fw=192.168.123.254:80 # via SMC's Barricade FW
#use=netgear-rt3xx, fw=192.168.0.1:80 # via Netgear's internet FW
#use=linksys, fw=192.168.1.1:80 # via Linksys's internet FW
#use=maxgate-ugate3x00, fw=192.168.0.1:80 # via MaxGate's UGATE-3x00 FW
#use=elsa-lancom-dsl10, fw=10.0.0.254:80 # via ELSA LanCom DSL/10 DSL Router
#use=elsa-lancom-dsl10-ch01, fw=10.0.0.254:80 # via ELSA LanCom DSL/10 DSL Router
#use=elsa-lancom-dsl10-ch02, fw=10.0.0.254:80 # via ELSA LanCom DSL/10 DSL Router
#use=alcatel-stp, fw=10.0.0.138:80 # via Alcatel Speed Touch Pro
#use=xsense-aero, fw=192.168.1.1:80 # via Xsense Aero Router
#use=allnet-1298, fw=192.168.1.1:80 # via AllNet 1298 DSL Router
#use=3com-oc-remote812, fw=192.168.0.254:80 # via 3com OfficeConnect Remote 812
#use=e-tech, fw=192.168.1.1:80 # via E-tech Router
#use=cayman-3220h, fw=192.168.0.1:1080 # via Cayman 3220-H DSL Router
#
#fw-login=vanescar fw-password=******* # FW login and password
#
## To obtain an IP address from FW status page (using fw-login, fw-password)
#use=fw, fw=192.168.1.254/status.htm, fw-skip='IP Address' # found after IP Address
#
## To obtain an IP address from Web status page (using the proxy if defined)
use=web, web=checkip.dyndns.org/, web-skip='IP Address' # found after IP Address
#
#use=ip, ip=127.0.0.1 # via static IP's
#use=if, if=eth0 # via interfaces
use=web # via web
#
#protocol=dyndns2 # default protocol
#proxy=fasthttp.sympatico.ca:80 # default proxy
server=members.dyndns.org # default server
#server=members.dyndns.org:8245 # default server (bypassing proxies)

login=vanescar # default login
password=******** # default password
mx=vanescar.homelinux.com # default MX
#backupmx=yes|no # host is primary MX?
#wildcard=yes|no # add wildcard CNAME?

##
## dyndns.org dynamic addresses
##
## (supports variables: wildcard,mx,backupmx)
##
server=members.dyndns.org, \
protocol=dyndns2 \
# your-dynamic-host.dyndns.org

##
## dyndns.org static addresses
##
## (supports variables: wildcard,mx,backupmx)
##
# static=yes, \
# server=members.dyndns.org, \
# protocol=dyndns2 \
# your-static-host.dyndns.org

##
##
## dyndns.org custom addresses
##
## (supports variables: wildcard,mx,backupmx)
##
# custom=yes, \
# server=members.dyndns.org, \
# protocol=dyndns2 \
# your-domain.top-level,your-other-domain.top-level

##
## ZoneEdit (zoneedit.com)
##
# server=www.zoneedit.com, \
# protocol=zoneedit1, \
# login=your-zoneedit-login, \
# password=your-zoneedit-password \
# your.any.domain,your-2nd.any.dom

##
## EasyDNS (easydns.com)
##
# server=members.easydns.com, \
# protocol=easydns, \
# login=your-easydns-login, \
# password=your-easydns-password \
# your.any.domain,your-2nd.any.domain

##
## Hammernode (hn.org) dynamic addresses
##
# server=dup.hn.org, \
# protocol=hammernode1, \
# login=your-hn-login, \
# password=your-hn-password \
# your-hn-host.hn.org,your-2nd-hn-host.hn.org

##
## dslreports.com dynamic-host monitoring
##
# server=members.dslreports.com \
# protocol=dslreports1, \
# login=dslreports-login, \
# password=dslreports-password \
# dslreports-unique-id

##
## OrgDNS.org account-configuration
##
# use=web, web=members.orgdns.org/nic/ip
# server=www.orgdns.org \
# protocol=dyndns2 \
# login=yourLoginName \
# password=yourPassword \
# yourSubdomain.orgdns.org

##
## dnspark.com
## (supports variables: mx, mxpri)
##
# use=web, web=ipdetect.dnspark.com, web-skip='Current Address:'
# protocol=dnspark, \
# server=www.dnspark.com, \
# your-host.dnspark.com

##
## NameCheap (namecheap.com)
##
# protocol=namecheap, \
# server=dynamicdns.park-your-domain.com, \
# login=my-namecheap.com-login, \
# password=my-namecheap.com-password \
# myhost.namecheap.com

Mar 13 10:47:50 vanescar ddclient[10835]: SUCCESS: updating vanescar.homelinux.com: good: IP address set to 82.50.118.254