(Cisco has a very useful function called nbar. It is a technology that can dynamically search for protocols in layers 4 to 7. It can not only control static TCPUDP messages as ordinary ACLS can do, but also those protocols (BT, eDonkey, etc.) that ordinary ACLS cannot do (control dynamic ports). Pdlm is set up to expand nbar's ability to identify network protocols and applications through some subscribed pdlm modules, Cisco routers can identify corresponding protocols and applications without upgrading IOS. At present, the pdlm modules of P2P protocol provided by Cisco website include BitTorrent, eDonkey, WinMX, kazza2, FastTrack, Napster, etc! The usage is also relatively simple. Bittorrent pdlm,eDonkey. Download the pdlm to the flash card of the router (copytfpt:flash this document contains the following attachments:
bittorrent. pdlm
citrix. pdlm
directconnect. pdlm
eDonkey. pdlm
fasttrack. pdlm
gnutella. pdlm
kazaa. pdlm
kazaa2.pdlm
mgcp. pdlm
napster. pdlm
rtcp. pdlm
rtp-123. pdlm
rtp-124. pdlm
rtp. pdlm
rtsp. pdlm
sap-app. pdlm
sap-msg. pdlm
sap-pgm. pdlm
sip. pdlm
skinny. pdlm
WinMX. pdlm
Pdlm....)