Packet Captures

gmail.pcapng.cap 508.6 KB

Submitted Aug 7, 2014 by tmuhimbisemoses

Sample packet capture I created during an attempt to view login details.

ARP DHCPV6 DNS HTTP IP IPv6 NBNS SSL TCP TEREDO UDP

cflow.cap 782 bytes

Submitted Aug 7, 2014 by jabbs0n

Netflow v9 packet containing template as well as data set

IP UDP

Open Network Connection.pcapng.cap 26.8 KB

Submitted Jul 2, 2014 by correia_ramos

Open Network Connection

ARP DNS HTTP IP MEDIA NBDGM NBNS NTP SMB TCP UDP XML

address withdrawal ldp.pcapng.cap 716 bytes

Submitted Apr 25, 2014 by altafk

Label address withdrawal message. An LSR sends the label address withdrawal message to a peer when it wants to withdraw previously advertised labels to address mappings. See RFC 3036 for more details.

IP LDP TCP

mpls address label mapping.pcapng.cap 708 bytes

Submitted Apr 23, 2014 by altafk

MPLS address label mappings communication over TCP (here R6 to R5) In this packet we can see the address bound to that neighbor (R6) in the address list TLV. Also the address and labels are encoded as TLV(type length value). We should remember that the transport address of the neighbor should be reachable and not mpls router ID, because the TCP handshake is done via transport address and not MPLS router id. The address label mapping is exchanged once the TCP handshake is done.

IP LDP TCP

DNS Question & Answer.pcapng.cap 1.6 KB

Submitted Apr 16, 2014 by manjesh23

DNS Question and Answer

DNS IP UDP

bgp as confed sequence.pcapng.cap 432 bytes

Submitted Apr 4, 2014 by altafk

AS confederation sequence set in the BGP updates. Confederations are used to minimize IBGP mesh between BGP speakers but IBGP rules apply between EBGP sub confederation peers. AS confederation sequence are an ordered list of Autonomous systems passed within confederations.

BGP IP TCP

bgp orf prefix advertisement.pcapng.cap 336 bytes

Submitted Apr 3, 2014 by altafk

BGP prefix list sent during route refresh when outbound route filtering is configured. here we clearly see whether the prefix list is add or delete and permit or deny. Also we can see the actual network/mask sent.

BGP IP TCP

bgp orf capabilty negotitation.pcapng.cap 328 bytes

Submitted Apr 3, 2014 by altafk

BGP outbound route filtering capabilities negotiation between BGP speakers, sent during route [ Cisco PrefixList ORF-Type (128)].

BGP IP TCP

bgp med.pcapng.cap 364 bytes

Submitted Apr 2, 2014 by altafk

BGP metric value set to 242( just a random value), used as a suggestion for peer in neighboring AS to influence incoming traffic.

BGP IP TCP

no-advertise community.pcapng.cap 420 bytes

Submitted Mar 31, 2014 by altafk

BGP update packet with no-advertise community set [Community:NO_ADVERTISE (0xffffff02)] A BGP router telling its BGP peer not to advertise this route to any other peer whether EBGP or IBGP.

BGP IP TCP

sflow.cap 1.8 KB

Submitted Oct 29, 2013 by hgsuttorp

SFLOW capture containing - counter sample packets - flow sample packet

IP SFLOW UDP

snoop-working-ccm7.cap 203.0 KB

Submitted Jul 22, 2013 by earnestavathan

H323 Phone registering!!!

H225 IP Q931 TCP TPKT UDP

hdlc slarp.pcapng.cap 612 bytes

Submitted Jan 29, 2013 by altafk

We can have our serial interface automatically assign itself ip address from neighbor router, like DHCP for serial interfaces.
which is called as SLARP(serial line address resolution protocol).
Here is a packet capture of slarp and the router requesting the addresss and mask from neighbor router.Also the neighboring router responds with its own ip address and mask and this router looks into the mask and assigns itself the next available ip address from the subnet.

SLARP

icmp fragmented.cap 106.4 KB

Submitted Aug 27, 2012 by altafk

pinged google.com with -l option in windows which allows us to set the data size of the packet.
Data size of 15000 bytes has been chosen and we can see that it is fragmented through the network into a maximum data size 1480 bytes in each packet.
We can also see offset and identification field set in the ip header.

ICMP IP

ospf over gre tunnel.cap 8.2 KB

Submitted Jun 13, 2012 by altafk

Configured ospf over GRE tunnel in which packets are double tagged with ip header, useful when there is no direct connection between the 2 routers but still we need to run ospf.

GRE IP OSPF

connection termination.cap 316 bytes

Submitted Jun 5, 2012 by altafk

This is a connection termination packet in which both the server and client sends fin & ack to each other.
For details of how connection is been teared down by both client and server see the link below.
http://www.firewall.cx/networking-topics/protocols/tcp/136-tcp-flag-options.html

IP TCP

gratuitous arp hsrp.cap 480 bytes

Submitted May 16, 2012 by altafk

When router take the role of active in hsrp it sends a gratuitous arp in which source mac is 00:00:0c:07:ac:01, the switches update their mac table for the newly learned mac and starts forwarding to that port.

ARP

ospf simple password authentication.cap 766 bytes

Submitted May 14, 2012 by altafk

IP OSPF

icmp with record route option set.cap 1.2 KB

Submitted May 9, 2012 by altafk

ping packet with record route option set and IP addresses of all outgoing and incoming interfaces along the path.
In that we can also see position of current pointer.

ICMP IP

dtls_null.cap 2.2 KB

Submitted May 5, 2012 by Kriki

IP UDP

MSTP_Intra-Region_BPDUs.cap 1.7 KB

Submitted May 1, 2012 by lobo

LLC STP VLAN

IGMP_V1.cap 2.0 KB

Submitted Apr 2, 2012 by Emieeecy

All IGMP V1 requests : Query General, Join specific group

IGMP IP

IGMP_V2.cap 1.3 KB

Submitted Mar 27, 2012 by Emieeecy

All IGMP V2 requests : Query General, Query specfic group, Join specific group, leave specific group

IGMP IP

stun2.cap 102 bytes

Submitted Mar 2, 2012 by jello

Stun (2) Protocol. UDP Holepunching technique.

IP STUN UDP