references

Exchange versions

2012-01-10

Quick reference table for Exchange versions with build numbers, release dates, and links to product support lifecycle pages.

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net user command reference and examples

2010-03-01

  As a follow up to the recent post on disabling accounts with a script, I thought I would include a quick cheat sheet on net user commands. As you may know, the net commands were what we had to deal with back in the dark ages before VB, WMI, PowerShell, and the likes of [...]

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Routing Protocols reference

2009-12-28

Needing to quickly brush up on my routing protocol trivia, and not really finding anything that fit the bill, I decided to throw together this little table of trivialities for routing protocols. It is no where near complete, and may never be, but I wanted to make sure I covered the basics for my own [...]

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PIX/ASA logging levels

2007-11-27

PIX/ASA logging supports eight levels. The higher the level, the more information generated, as each level includes the messages from all lower levels. Keyword Level Message emergency 0 System unusable alert 1 Immediate action needed critical 2 Critical condtion error 3 Error condition warning 4 Warning condition notification 5 Normal but significant condition informational 6 [...]

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ip protocol numbers

2007-09-07

This is just a summary of the more common assignments. See RFC 1700 for the complete list. Decimal Hex Keyword Protocol 0 0 Reserved 1 1 ICMP Internet Control Message 6 6 TCP Transmission Control 8 8 EGP Exterior Gateway Protocol 9 9 IGP any private interior gateway 17 11 UDP User Datagram 46 2E [...]

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traceroute response codes

2007-06-07

response meaning !H Host unreachable !N Network unreachable !P Protocol unreachable !S Source route not permitted !F Fragmentation needed but DF bit is set !X Communication administratively prohibited

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subnet/wildcard values

2007-06-07

CIDR SubnetMask WildcardMask HexSubNetMask 32 255.255.255.255 0.0.0.0 FF.FF.FF.FF 31 255.255.255.254 0.0.0.1 FF.FF.FF.FE 30 255.255.255.252 0.0.0.3 FF.FF.FF.FC 29 255.255.255.248 0.0.0.7 FF.FF.FF.F8 28 255.255.255.240 0.0.0.15 FF.FF.FF.F0 27 255.255.255.224 0.0.0.31 FF.FF.FF.E0 26 255.255.255.192 0.0.0.63 FF.FF.FF.C0 25 255.255.255.128 0.0.0.127 FF.FF.FF.80 24 255.255.255.0 0.0.0.255 FF.FF.FF.00 23 255.255.254.0 0.0.1.255 FF.FF.FE.00 22 255.255.252.0 0.0.3.255 FF.FF.FC.00 21 255.255.248.0 0.0.7.255 FF.FF.F8.00 20 255.255.240.0 0.0.15.255 [...]

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smtp response codes

2007-06-07

code meaning 211 System status or system help reply 214 Help message 220 Service ready 221 Service closing transmission channel 250 Requested mail action okay 251 User not local will forward to 252 Cannot VRFY user but will take message and attempt delivery 253 messages pending for node started 354 Start mail input end with [...]

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well known ports

2007-06-07

If you are planning to use one of the protocols on this list, consider it sufficiently “well-known” to indicate you should use the port assigned by IANA. Certain presumptions will be made on firewalls (hardware and client) and IDS systems regarding this traffic. The full list is maintained by the IANA and can be found [...]

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netbios name types

2007-06-07

code type meaning 0 U Workstation Service 0 G Domain Name 0 U IIS 1 U Messenger Service 3 U Messenger Service 6 U RAS Server Service 1B U Domain Master Browser 1C G Domain Controllers 1C G IIS 1D U Master Browser 1E G Browser Service Elections 1F U NetDDE Service 20 U Server [...]

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kerberos response codes

2007-06-07

code message meaning 0×6 KDC_ERR_C_PRINCIPAL_UNKNOWN: Client not found in Kerberosdatabase 0×7 KDC_ERR_S_PRINCIPAL_UNKNOWN: Server not found in Kerberosdatabase 0×8 KDC_ERR_PRINCIPAL_NOT_UNIQUE: Multiple principal entries indatabase 0xA KDC_ERR_CANNOT_POSTDATE: Ticket not eligible for postdating 0xC KDC_ERR_POLICY: KDC policy rejects request 0xD KDC_ERR_BADOPTION: KDC cannot accommodaterequested option 0xE KDC_ERR_ETYPE_NOTSUPP: KDC has no support forencryption type 0xF KDC_ERR_SUMTYPE_NOSUPP: KDC has no [...]

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icmp response code

2007-06-07

code type description 0 0 echo-reply 3 0 net-unreachable 3 1 host-unreachable 3 2 protocol-unreachable 3 3 port-unreachable 3 4 fragmentation-df-set 3 5 source-route-failed 3 6 dest-network-unknown 3 7 dest-port-unknown 3 8 source-host-isolated 3 9 network-administratively prohibited 3 10 host-administratively prohibited 3 11 Destination Network Unreachable for Type of Service 3 12 Destination Host Unreachable [...]

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