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Packet Captures

Showing 1 - 25 of 123

TCP_SACK.cap 27.5 KB

Submitted Jun 16, 2010

A TCP SACK option is included in packets #31, #33, #35, and #37. The missing segment is retransmitted in packet #38.

Ethernet HTTP IP TCP

Packets: 39 Duration: n/a Downloads: 24560

HTTP.cap 24.9 KB

Submitted Mar 1, 2011

Simple HTTP transfer of a PNG image using wget

Ethernet HTTP IP TCP

Packets: 40 Duration: n/a Downloads: 23425

802.1Q_tunneling.cap 5.0 KB

Submitted Jun 30, 2010

CDP Ethernet IP LLC VLAN

Packets: 26 Duration: 35s Downloads: 19470

traceroute_MPLS.cap 3.3 KB

Submitted May 14, 2011 by stretch

ICMP IP UDP

Packets: 29 Duration: 3s Downloads: 17280

GRE.cap 1.5 KB

Submitted Sep 14, 2009

ICMP is encapsulated into a Generic Routing Encapsulation (GRE) tunnel.

Ethernet GRE IP

Packets: 10 Duration: n/a Downloads: 16747

BGP_MP_NLRI.cap 2.9 KB

Submitted Jun 28, 2010

IPv6 routes are carried as a separate address family inside MP_REACH_NLRI attributes.

BGP Ethernet IP IPv6 TCP

Packets: 24 Duration: 60s Downloads: 15205

cm4116_telnet.cap 9.4 KB

Submitted Mar 1, 2011

Short Telnet session with an Opengear CM4116 used to demonstrate the urgent flag and pointer

Ethernet IP TCP Telnet

Packets: 113 Duration: 14s Downloads: 15034

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

Packets: 63 Duration: 241s Downloads: 14895

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

Packets: 18 Duration: 133s Downloads: 14714

RADIUS.cap 775 bytes

Submitted Sep 14, 2009

A RADIUS authentication request is issued from a switch at 10.0.0.1 on behalf of an EAP client. The user authenticates via MD5 challenge with the username "John.McGuirk" and the password "S0cc3r".

Ethernet IP RADIUS UDP

Packets: 4 Duration: n/a Downloads: 13465

packet-c.cap 675.0 KB

Submitted Jan 31, 2012 by Slaingod

This is a packet capture from a SonicWall. We were troubleshooting DHCP packet flows. The SonicWall saw the DHCP Discover and Sent an Offer. We never saw the DHCP acknowledgement. In the adjacent core stacked switching we were running "debug ip dhcp server packets" we only saw discover packets from IP phones up to the SonicWall. For some reason the SonicWall could not let any other DHCP packets through or out of it INSIDE (LAN) interface. Even if we put an ANY-ANY ALC for that interface. We ended up having to replace the SonicWall and upload the configuration from the old SonicWall to the new one.

-Slaingod

BOOTP DNS HTTP IP LLC SKINNY SSL STP TCP UDP

Packets: 926 Duration: 13s Downloads: 13462

iphttps.cap 12.4 KB

Submitted Nov 12, 2010 by nacnud

IP-HTTPS capture. This is Microsoft's IPv6 inside HTTPS tunneling for DirectAccess.

ARP DNS Ethernet ICMPv6 IGMP IP IPv6 LLC NBNS NBSS SSL TCP UDP

Packets: 83 Duration: 38s Downloads: 13030

DHCP_MessageType 10,11,12 and 13.cap 1.9 KB

Submitted Jan 31, 2011 by Jawahar

Access Concentrator/router queries lease for particular IP addresses using message type as "DHCP LEASE QUERY" and gets response as DHCP LEASE ACTIVE,LEASE UNASSIGNED and LEASE UNKNOWN.

Access Concenttrator/Router IP=10.10.39.14
DHCP server IP=10.10.35.33

BOOTP Ethernet IP UDP

Packets: 6 Duration: 13s Downloads: 12231

TACACS+_encrypted.cap 2.8 KB

Submitted Sep 28, 2010

TACACS+ authentication and authorization requests as made by a Cisco IOS router upon a user logging in via Telnet.

Ethernet IP TACACS+ TCP

Packets: 34 Duration: 7s Downloads: 12096

IPsec_ESP-AH_tunnel_mode.cap 2.1 KB

Submitted Sep 14, 2009

Encrypted ICMP across an IPsec tunnel. AH and ESP headers are present.

AH ESP Ethernet IP

Packets: 10 Duration: n/a Downloads: 11948

IP_in_IP.cap 1.5 KB

Submitted Sep 14, 2009

Direct IP-in-IP tunnel encapsulation (configured in Cisco IOS with tunnel mode ipip).

Ethernet ICMP IP

Packets: 10 Duration: n/a Downloads: 11612

DHCP.cap 5.8 KB

Submitted Sep 29, 2009 by pierky

R0 is the client and R1 is the DHCP server. Lease time is 1 minute.

BOOTP Ethernet IP UDP

Packets: 12 Duration: 153s Downloads: 11468

ICMP_over_L2TPv3_Pseudowire.pcap.cap 5.3 KB

Submitted Sep 4, 2010 by onefst250r

ICMP pings from a CE to a second CE via a L2TPv3 pseudowire.

Ethernet IP L2TP LOOP OSPF

Packets: 38 Duration: 30s Downloads: 11464

path_MTU_discovery.cap 6.2 KB

Submitted Sep 14, 2009

Tracepath is used to determine the MTU of the path between hosts 192.168.0.2 and .1.2. Packet #6 contains an ICMP "fragmentation needed" message, indicating the MTU for that hop is 1400 bytes.

Ethernet ICMP IP UDP

Packets: 8 Duration: n/a Downloads: 11417

VRRP_failover.cap 2.4 KB

Submitted Sep 14, 2009

The master router (R1) goes offline. After the down interval passes (roughly 3 seconds), R3 takes over as the master router in packet #12. R2 also offers to take over but R3 wins because it has the higher IP address.

Ethernet IP VRRP

Packets: 32 Duration: 33s Downloads: 10993

MPLS_encapsulation.cap 1.3 KB

Submitted Sep 14, 2009

Capture taken from the PE1-P1 link. ICMP traffic between CE1 and CE2 is encapsulated outbound with MPLS label 18. Note that returning traffic is not labeled, due to penultimate hop popping (PHP).

Ethernet ICMP IP MPLS

Packets: 10 Duration: n/a Downloads: 10796

OSPF_LSA_types.cap 4.0 KB

Submitted Sep 14, 2009

Capture of adjacency formation between OSPF routers 4 and 5 in area 20. Packet #12 contains LSAs of types 1, 2, 3, 4, and 5.

Ethernet IP OSPF

Packets: 30 Duration: 63s Downloads: 10758

ICMP_across_dot1q.cap 1.7 KB

Submitted Sep 14, 2009

A ping issued from 192.168.123.2 to 192.168.123.1 is encapsulated with an IEEE 802.1Q header, placing it in VLAN 123.

ARP Ethernet ICMP IP VLAN

Packets: 15 Duration: 35s Downloads: 10589

IGMP_V1.cap 2.0 KB

Submitted Apr 2, 2012 by Emieeecy

All IGMP V1 requests : Query General, Join specific group

IGMP IP

Packets: 27 Duration: 259s Downloads: 10545

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

Packets: 4 Duration: n/a Downloads: 10413

Showing 1 - 25 of 123