Cisco config text highlighting with Gedit

The following files can be copied into the language folder to enable text highlighting for Cisco configurations

$ sudo cp ios.lang /usr/share/gtksourceview-3.0/language-specs/

ios.lang

<?xml version="1.0" encoding="UTF-8"?>
<language id="cisco-ios" _name="Cisco IOS" version="2.0" _section="Cisco">
  <metadata>
    <property name="mimetypes">text/plain</property>
    <property name="globs">*.cfg</property>
    <property name="comment-start">!</property>
  </metadata>
  <styles>
    <style id="comment" _name="Comment" map-to="def:comment"/>
    <style id="identifier" _name="Interface" map-to="def:identifier"/>
    <style id="list" _name="Access List" map-to="def:preprocessor"/>
    <style id="number" _name="Number" map-to="def:preprocessor"/>
  </styles>
  <definitions>
    <context id="comment" style-ref="comment" end-at-line-end="true">
      <start>!</start>
    </context>
    <context id="description" style-ref="comment" end-at-line-end="true">
      <start>description</start>
    </context>

    <context id="hostname" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>hostname</start>
    </context>
    <context id="interface" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>interface</start>
    </context>
    <context id="policy-map" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>policy-map</start>
    </context>
    <context id="class-map" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>class-map</start>
    </context>
    <context id="controller" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>controller</start>
    </context>
    <context id="linevty" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>line vty</start>
    </context>
    <context id="linecon" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>line con</start>
    </context>
    <context id="lineaux" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>line aux</start>
    </context>

    <context id="lists" style-ref="list">
      <keyword>access-list</keyword>
      <keyword>ip route</keyword>
      <keyword>ip nat</keyword>
    </context>

    <context id="routers" style-ref="identifier">
      <keyword>router rip</keyword>
      <keyword>router eigrp</keyword>
      <keyword>router igrp</keyword>
      <keyword>router ospf</keyword>
      <keyword>router bgp</keyword>
    </context>

    <context id="number" style-ref="number">
      <match>(\b[0-9]+(\.[0-9]+)?|\.[0-9]+)([Ee][\+-]?[0-9]+)?\b</match>
    </context>
    <context id="cisco-ios">
      <include>
        <context ref="comment"/>
        <context ref="description"/>
        <context ref="hostname"/>
        <context ref="interface"/>
        <context ref="controller"/>
        <context ref="linevty"/>
        <context ref="linecon"/>
        <context ref="lineaux"/>
        <context ref="policy-map"/>
        <context ref="class-map"/>
        <context ref="lists"/>
        <context ref="routers"/>
        <context ref="number"/>
       </include>
    </context>
  </definitions>
</language>

asa.lang

<?xml version="1.0" encoding="UTF-8"?>
<language id="cisco-firewall" _name="Cisco PIX/ASA" version="2.0"
_section="Cisco">
  <metadata>
    <property name="mimetypes">text/plain</property>
    <property name="globs">*.txt;</property>
    <property name="comment-start">!</property>
  </metadata>
  <styles>
    <style id="comment" _name="Comment" map-to="def:comment"/>
    <style id="identifier" _name="Interface" map-to="def:keyword"/>
    <style id="access-list" _name="Access List" map-to="def:preprocessor"/>
    <style id="static" _name="Static" map-to="def:string"/>
    <style id="nat" _name="NAT" map-to="def:type"/>
    <style id="route" _name="Route" map-to="def:preprocessor"/>
    <style id="number" _name="Number" map-to="def:comment"/>
  </styles>
  <definitions>
    <context id="comment" style-ref="comment" end-at-line-end="true">
      <start>!</start>
    </context>
    <context id="description" style-ref="comment" end-at-line-end="true">
      <start>description</start>
    </context>

    <context id="hostname" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>hostname</start>
    </context>
    <context id="ip-address" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>ip address</start>
    </context>
    <context id="interface" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>interface</start>
    </context>
    <context id="policy-map" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>policy-map</start>
    </context>
    <context id="class-map" end-at-line-end="true" extend-parent="false"
style-ref="identifier">
      <start>class-map</start>
    </context>

    <context id="access-list" end-at-line-end="true" extend-parent="false"
style-ref="access-list">
      <start>access-list</start>
    </context>

    <context id="access-group" end-at-line-end="true" extend-parent="false"
style-ref="access-list">
      <start>access-group</start>
    </context>

    <context id="static" end-at-line-end="true" extend-parent="false"
style-ref="static">
      <start>static</start>
    </context>

    <context id="nat" end-at-line-end="true" extend-parent="false"
style-ref="nat">
      <start>nat</start>
    </context>

    <context id="route" end-at-line-end="true" extend-parent="false"
style-ref="route">
      <start>route</start>
    </context>

    <context id="number" style-ref="number">
      <match>(\b[0-9]+(\.[0-9]+)?|\.[0-9]+)([Ee][\+-]?[0-9]+)?\b</match>
    </context>
    <context id="cisco-firewall">
      <include>
        <context ref="comment"/>
        <context ref="description"/>
        <context ref="ip-address"/>
        <context ref="hostname"/>
        <context ref="interface"/>
        <context ref="policy-map"/>
        <context ref="class-map"/>
        <context ref="access-list"/>
        <context ref="access-group"/>
        <context ref="static"/>
        <context ref="nat"/>
        <context ref="route"/>
        <context ref="number"/>
       </include>
    </context>
  </definitions>
</language>