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Basic configuration(no VRF enable):
int fa 0
ip nat enable
int fa 1
ip nat enable
int serial 0
ip nat enable
ip nat source list 50 interface serial 0 overload //translate fa 0 & fa 1 lans out serial 0
ip nat source list 125 interface fa 0 overload //translate fa 1's lan out fa 0
ip nat source static tcp 172.168.50.10 80 interface serial 0 80 //translate web server out serial 0
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InternalHosts<--e1(Router)e0-->RemoteNetworks
access-list 100 permit tcp any any gt 1023 established
interface e0
ip access-group 100 in
"UDP packets don't establish a connection, they're literally fire and forget! A simple permit udp host xx.xx.xx.xx host xx.xx.xx.xx eq xx should be all that's required."
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See Cisco document id 26448
Also see:
Reflexive ACLs
ip inspect command.
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Connecting two routers back to back using their T1-DSU/CSU ports.
Cards and pin layout:
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Welcome to my blog.
I needed a place to put all helpful little things, to be available at all times; specially when I have something in my mind and know I know it, so I created this blog ...to share. I added a tutorial section, it helps me remember how to do things (if I start updating it,jk).
Enjoy!. Angel
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<script type="text/javascript">
x=false || 'test';
alert(x);//outputs 'test';
</script>
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If you found something helpful in this site and want to return the favor,
http://www.amazon.com/gp/registry/wishl ... av_lists_1
but if you really love me...
http://www.amazon.com/registry/wishlist ... _go_o_T1-2
;)
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PHP
$_GET
$_POST
ASP.NET
Request.QueryString
Request.Form
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. matches any one character
[] character class, matches one character; gr[ae]y matches gray or grey
[^] matches any character not listed.
[1-6] is the same as [123456], which matches any number from 1 to six
[^0-9a-fA-F] is the same as [^0123456abcdefABCDEF], wich matches any character NOT hexadecimal
^ matches start of line
$ matches end of line
\b marches word boundaries
| logic OR, matches either expression it separates, second|2nd matches second or 2nd
() expression grouping, gr(a|e)y matches gray or grey
? matches one optional, Angela? matches Angel and Angela
* matches any amount OK, a*
+ matches at least one, a+
{0,1} the same as ?, a{0,1} the a is optional
{0,10} minimum zero, maximum ten; a{0,10}
{5,8} minumum five, maximum eight.
// Greedy quantifiers
String match = find("A.*c", "AbcAbc"); // AbcAbc
match = find("A.+", "AbcAbc"); // AbcAbc
// Nongreedy quantifiers
match = find("A.*?c", "AbcAbc"); // Abc
match = find("A.+?", "AbcAbc"); // Abc
// Look arounds
//positive lookahead: match Cent only if followed by OS
Cent(?=OS)
// negative lookahead: match Cent only if not followed by OS
Cent(?!OS)
// postive lookbehind: match OS only if preceded by Cent
(?<=Cent)OS
// negative lookbehind: match OS only if not preceded by Cent
(?<!Cent)OS
----------------------------------------------------------------------------------
See:
http://www.pcre.org/pcre.txt
http://www.php.net/manual/en/intro.pcre.php
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Click on related link to view notes.
Topics:
VLAN & Trunking
STP
ACLs
RIP
EIGRP
OSPF
WAN
VPN
IPv6
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Cisco IOS (routers):
-Static NAT
-Dynamic NAT
-NAT Overload= PAT
-Static PAT= Port Forwarding
-NVI (NAT Virtual Interface), removes inside & outside terminology.
--------------------------------------------
Cisco ASA/PIX firewalls:
-Static NAT
-Policy NAT
-Identity NAT
-NAT Exemption
-Dynamic NAT
-PAT
-Satic PAT
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