anyone know how to or a program that will scan for ip addresses in a network?

Answer 1

This depends on the extent of the scanning being done. Are you only looking to find IP's within your own LAN or public IP's? Are you scanning these for ports or just hunting down the IP's? Are you scanning Subnets for MAC's?
General port scanner: http://www.foundstone.com/index.htm?subnav=resources/navigation.htm&subcontent=/resources/proddesc/superscan.htm
Cain & Abel has a good Subnet MAC scanner: http://www.oxid.it/cain.html
Last but not least, NMAP can usually take care of all these requests and then some. In this case, I'd suggest NMAP for everything you're looking to do, however the above programs mentioned have there highs. NMAP can also ping the subnet for IP's. http://www.insecure.org/nmap/download.html

Answer 2

Why using a program? Use the "netstat" command on Telnet instead.

Regards
(Siddharth Razdan)

Answer 3

in the URL bar type your ip address and it will take you to you router and you will be able to learn about everything on your network.

Answer 4

use 'netstat' command through DOS or use a software. There are various software available on net. Find it out through GOOGLE>

Answer 5

you can use LANguard network Scanner program.it is useful to utility for network.

Answer 6

There is software called "IPSCAN", download it, it wil do what u r expecting, if not my yahoo id is 'harsha_nsi123' add me i wil send to u tht software

Answer 7

My Friend You Can Use Ethereal Network Analyzer.

Here is the Features of This Program :
Features
Ethereal is still technically beta software, but it has a comprehensive feature set and is suitable for production use. Here is the list of features, current as of version 0.9.14, in no particular order:

Data can be captured "off the wire" from a live network connection, or read from a capture file.
Ethereal can read capture files from tcpdump (libpcap), NAI's Sniffer™ (compressed and uncompressed), Sniffer™ Pro, NetXray™, Sun snoop and atmsnoop, Shomiti/Finisar Surveyor, AIX's iptrace, Microsoft's Network Monitor, Novell's LANalyzer, RADCOM's WAN/LAN Analyzer, HP-UX nettl, i4btrace from the ISDN4BSD project, Cisco Secure IDS iplog, the pppd log (pppdump-format), the AG Group's/WildPacket's EtherPeek/TokenPeek/AiroPeek, or Visual Networks' Visual UpTime. It can also read traces made from Lucent/Ascend WAN routers and Toshiba ISDN routers, as well as the text output from VMS's TCPIPtrace utility and the DBS Etherwatch utility for VMS. Any of these files can be compressed with gzip and Ethereal will decompress them on the fly.
Live data can be read from Ethernet, FDDI, PPP, Token-Ring, IEEE 802.11, Classical IP over ATM, and loopback interfaces (at least on some platforms; not all of those types are supported on all platforms).
Captured network data can be browsed via a GUI, or via the TTY-mode "tethereal" program.
Capture files can be programmatically edited or converted via command-line switches to the "editcap" program.
759 protocols can currently be dissected:
3COMXNS, 3GPP2 A11, 802.11 MGT, 802.11 Radiotap, 802.3 Slow protocols, 9P, AAL1, AAL3/4, AARP, ACAP, ACN, ACP133, ACSE, ACtrace, ADP, AFP, AFS (RX), AH, AIM, AIM Administration, AIM Advertisements, AIM BOS, AIM Buddylist, AIM Chat, AIM ChatNav, AIM Directory, AIM Email, AIM Generic, AIM ICQ, AIM Invitation, AIM Location, AIM Messaging, AIM OFT, AIM Popup, AIM SSI, AIM SST, AIM Signon, AIM Stats, AIM Translate, AIM User Lookup, AJP13, ALC, ALCAP, AMR, ANS, ANSI BSMAP, ANSI DTAP, ANSI IS-637-A Teleservice, ANSI IS-637-A Transport, ANSI IS-683-A (OTA (Mobile)), ANSI IS-801 (Location Services (PLD)), ANSI MAP, AODV, AOE, ARCNET, ARP/RARP, ARTNET, ASAP, ASF, ASN1, ASP, ATM, ATM LANE, ATP, ATSVC, AVS WLANCAP, AX4000, AgentX, Armagetronad, Auto-RP, BACapp, BACnet, BEEP, BER, BFD Control, BGP, BICC, BOFL, BOOTP/DHCP, BOOTPARAMS, BOSSVR, BROWSER, BSSAP, BSSGP, BUDB, BUTC, BVLC, Basic Format XID, BitTorrent, Boardwalk, CAMEL, CAST, CBAPDev, CCSDS, CCSRL, CDP, CDS_CLERK, CDT, CFLOW, CGMP, CHDLC, CIGI, CIMD, CIP, CISCOWL-L2, CLDAP, CLEARCASE, CLNP, CLTP, CMIP, CMP, CMS, CONV, COPS, COSEVENTCOMM, COSNAMING, COTP, CPFI, CPHA, CRMF, CSM_ENCAPS, CUPS, CoSine, DAAP, DAP, DCCP, DCERPC, DCE_DFS, DCOM, DCP, DDP, DDTP, DEC_DNA, DEC_STP, DFS, DHCPFO, DHCPv6, DIAMETER, DIS, DISP, DISTCC, DLSw, DLT User A, DLT User B, DLT User C, DLT User D, DNP 3.0, DNS, DNSSERVER, DOCSIS, DOCSIS BPKM-ATTR, DOCSIS BPKM-REQ, DOCSIS BPKM-RSP, DOCSIS DCC-ACK, DOCSIS DCC-REQ, DOCSIS DCC-RSP, DOCSIS DCD, DOCSIS DSA-ACK, DOCSIS DSA-REQ, DOCSIS DSA-RSP, DOCSIS DSC-ACK, DOCSIS DSC-REQ, DOCSIS DSC-RSP, DOCSIS DSD-REQ, DOCSIS DSD-RSP, DOCSIS INT-RNG-REQ, DOCSIS MAC MGMT, DOCSIS MAP, DOCSIS REG-ACK, DOCSIS REG-REQ, DOCSIS REG-RSP, DOCSIS RNG-REQ, DOCSIS RNG-RSP, DOCSIS TLVs, DOCSIS UCC-REQ, DOCSIS UCC-RSP, DOCSIS UCD, DOCSIS VSIF, DOCSIS type29ucd, DOP, DRSUAPI, DSI, DSP, DSSETUP, DTP, DTSPROVIDER, DTSSTIME_REQ, DUA, DVMRP, Data, E.164, E.212, EAP, EAPOL, ECHO, EDONKEY, EDP, EFS, EIGRP, ENC, ENIP, ENRP, ENTTEC, EPM, EPMv4, ESIS, ESP, ESS, ETHERIC, ETHERIP, EVENTLOG, Ethernet, FC, FC ELS, FC FZS, FC-FCS, FC-SB3, FC-SP, FC-SWILS, FC-dNS, FCIP, FCP, FC_CT, FDDI, FIX, FLDB, FR, FRSAPI, FRSRPC, FTAM, FTBP, FTP, FTP-DATA, FTSERVER, FW-1, Frame, G.723, GIF image, GIOP, GMRP, GNM, GNUTELLA, GPRS NS, GPRS-LLC, GRE, GSM BSSMAP, GSM DTAP, GSM RP, GSM SMS, GSM SMS UD, GSM_MAP, GSM_SS, GSS-API, GTP, GVRP, Gryphon, H.223, H.225.0, H.235, H.245, H.261, H.263, H.263 data, H1, H248, HCLNFSD, HPEXT, HPSW, HSRP, HTTP, HyperSCSI, IAP, IAPP, IAX2, IB, ICAP, ICBAAccoCB, ICBAAccoCB2, ICBAAccoMgt, ICBAAccoMgt2, ICBAAccoServ, ICBAAccoServ2, ICBAAccoServSRT, ICBAAccoSync, ICBABrowse, ICBABrowse2, ICBAGErr, ICBAGErrEvent, ICBALDev, ICBALDev2, ICBAPDev, ICBAPDev2, ICBAPDevPC, ICBAPDevPCEvent, ICBAPersist, ICBAPersist2, ICBARTAuto, ICBARTAuto2, ICBAState, ICBAStateEvent, ICBASysProp, ICBATime, ICEP, ICL_RPC, ICMP, ICMPv6, ICP, ICQ, IDP, IDispatch, IEEE 802.11, IEEE802a, IGAP, IGMP, IGRP, ILMI, IMAP, INAP, INITSHUTDOWN, IOXIDResolver, IP, IP/IEEE1394, IPComp, IPDC, IPFC, IPMI, IPP, IPVS, IPX, IPX MSG, IPX RIP, IPX SAP, IPX WAN, IPv6, IRC, IRemUnknown, IRemUnknown2, ISAKMP, ISDN, ISIS, ISL, ISMP, ISUP, ISystemActivator, IUA, IrCOMM, IrLAP, IrLMP, IuUP, JFIF (JPEG) image, JXTA, JXTA Message, Jabber, Juniper, K12xx, KADM5, KINK, KLM, KRB4, KRB5, KRB5RPC, Kpasswd, L2TP, LANMAN, LAPB, LAPBETHER, LAPD, LDAP, LDP, LGE_Monitor, LLAP, LLC, LLDP, LMI, LMP, LOOP, LPD, LSA, LWAPP, LWAPP-CNTL, LWAPP-L3, LWRES, Laplink, Line-based text data, Log, LogotypeCertExtn, Lucent/Ascend, M2PA, M2TP, M2UA, M3UA, MACC, MAPI, MAP_DialoguePDU, MATE, MDS Header, MEGACO, MGCP, MGMT, MIME multipart, MIPv6, MMS, MMSE, MOUNT, MPEG1, MPLS, MPLS Echo, MQ, MQ PCF, MRDISC, MS NLB, MS Proxy, MSDP, MSMMS, MSNIP, MSNMS, MSRP, MTP2, MTP3, MTP3MG, Manolito, Media, Messenger, Mobile IP, Modbus/TCP, MySQL, NBAP, NBDS, NBIPX, NBNS, NBP, NBSS, NCP, NCS, NDMP, NDPS, NFS, NFSACL, NFSAUTH, NHRP, NIS+, NIS+ CB, NJACK, NLM, NLSP, NMAS, NMPI, NNTP, NORM, NSIP, NSPI, NS_CERT_EXTS, NTLMSSP, NTP, NW_SERIAL, NetBIOS, Netsync, Null, OAM AAL, OCSP, OICQ, OLSR, OPSI, OSPF, PACKETCABLE, PAGP, PAP, PARLAY, PCLI, PCNFSD, PER, PFLOG, PFLOG-OLD, PGM, PGSQL, PIM, PKCS-1, PKIX Certificate, PKIX1EXPLICIT, PKIX1IMPLICIT, PKIXPROXY, PKIXQUALIFIED, PKIXTSP, PKInit, PKT CCC, PKTC, PN-DCP, PN-RT, PNIO, PNP, POP, PPP, PPP BACP, PPP BAP, PPP BCP, PPP CBCP, PPP CCP, PPP CDPCP, PPP CHAP, PPP Comp, PPP IPCP, PPP IPV6CP, PPP LCP, PPP MP, PPP MPLSCP, PPP OSICP, PPP PAP, PPP PPPMux, PPP PPPMuxCP, PPP VJ, PPP-HDLC, PPPoED, PPPoES, PPTP, PRES, PTP, PVFS, P_MUL, Portmap, Prism, Q.2931, Q.931, Q.933, QLLC, QUAKE, QUAKE2, QUAKE3, QUAKEWORLD, R-STP, RADIUS, RANAP, RDM, RDT, REMACT, REP_PROC, RIP, RIPng, RLM, RMCP, RMI, RMP, RNSAP, ROS, RPC, RPC_BROWSER, RPC_NETLOGON, RPL, RQUOTA, RRAS, RSH, RSTAT, RSVP, RSYNC, RS_ACCT, RS_ATTR, RS_BIND, RS_PGO, RS_PLCY, RS_REPADM, RS_REPLIST, RS_UNIX, RTCP, RTMP, RTP, RTP Event, RTPS, RTSE, RTSP, RTcfg, RTmac, RUDP, RWALL, RX, Raw, Raw_SIP, Raw_SigComp, Redback, Rlogin, SADMIND, SAMR, SAP, SCCP, SCCPMG, SCSI, SCTP, SDLC, SDP, SEBEK, SECIDMAP, SES, SGI MOUNT, SIGCOMP, SIP, SIPFRAG, SIR, SKINNY, SLARP, SLL, SM, SMB, SMB Mailslot, SMB Pipe, SMB2, SMB_NETLOGON, SMPP, SMRSE, SMTP, SMUX, SNA, SNA XID, SNAETH, SNDCP, SNMP, SONMP, SPNEGO, SPNEGO-KRB5, SPOOLSS, SPP, SPRAY, SPX, SRP, SRVLOC, SRVSVC, SSCF-NNI, SSCOP, SSH, SSL, SSS, STANAG 4406, STANAG 5066, STAT, STAT-CB, STP, STUN, SUA, SVCCTL, Serialization, SliMP3, Socks, SoulSeek, Symantec, Synergy, Syslog, T.30, T.38, TACACS, TACACS+, TALI, TANGO, TAPI, TCAP, TCP, TDMA, TDS, TEI_MANAGEMENT, TELNET, TFTP, TIME, TIPC, TKN4Int, TNS, TPCP, TPKT, TR MAC, TRKSVR, TSP, TTP, TUXEDO, TZSP, Teredo, Token-Ring, UBIKDISK, UBIKVOTE, UCP, UDP, UDPENCAP, UDPlite, UMA, V.120, V5UA, VLAN, VNC, VRRP, VTP, Vines ARP, Vines Echo, Vines FRP, Vines ICP, Vines IP, Vines IPC, Vines LLC, Vines RTP, Vines SPP, WAP SIR, WBXML, WCCP, WCP, WHDLC, WHO, WINREG, WINS-Replication, WKSSVC, WLANCERTEXTN, WSP, WTLS, WTP, X.25, X.29, X11, X411, X420, X509AF, X509CE, X509IF, X509SAT, XDMCP, XML, XOT, XYPLEX, YHOO, YMSG, YPBIND, YPPASSWD, YPSERV, YPXFR, ZEBRA, ZIP, cds_solicit, cprpc_server, dc, dce_update, dicom, giFT, h221nonstd, h450, iFCP, iSCSI, iSNS, isup_thin, itunes, llb, message/http, nettl, rdaclif, roverride, rpriv, rs_attr_schema, rs_misc, rs_prop_acct, rs_prop_acl, rs_prop_attr, rs_prop_pgo, rs_prop_plcy, rs_pwd_mgmt, rs_repmgr, rsec_login, rss, sFlow, smil,

Output can be saved or printed as plain text or PostScript®.
Data display can be refined using a display filter.
Display filters can also be used to selectively highlight and color packet summary information.
All or part of each captured network trace can be saved to disk.