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Which two packet filters could a network administrator use on an IPv4 extended ACL?
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Why would a network administrator use the tracert utility?
to identify where a packet was lost or delayed on a network
A network administrator is using an application that is monitoring packets on the network and sees an EIGRP update packet What is the purpose of the update packet?
bobo The packet is sent to discover neighbors within the EIGRP network. The packet is sent to search for network devices within an EIGRP network. The packet is used to propagate routing information within the EIGRP network. The packet is used to send an unreachable reply to another router within the EIGRP network.
What would one use a packet sniffer for?
Although unfamiliar with the term packet sniffer is has been discovered that it is a term related to technology. A packet sniffer is used by a system administrator or network to troubleshoot and monitor a network. It helps to maintain network data transmission.
Can a network administrator view the internet history of the clients of a wireless network through the router?
yes, i use a program called wireshark. it's a packet analyzer that tracks every packet sent through a router/hub. you just have to apply the right filters to narrow down the packets. technically this isn't "history", but while this program is running, all packets sent through the network are recorded.
What is a subnet id?
The subnet id identifies which smaller network within a larger network (the subnetted network) the packet should be delivered to. The subnet id is part of the extended network prefix which is used for routing.
What are some weaknesses of a packet-filtering router?
The weaknesses of static (or stateless) packet filters and stateful packet filters are different in a few ways. Stateless packet filters frequently block SYN scans of networks, but .... Stateless packet filters. (cf. iptables connection tracking), cf. state vs. stateless discussion. confounded application layer protocols like FTP, H323 Because of the nature of connection tracking and state awareness, stateful packet filters are vulnerable to resource exhaustion and deliberate attempts to trip rate-limiting features.
What does a sniffer program do?
A packet sniffer uses a network connection in promiscuous mode to receive and record packets that were not intended for that computer. This can be used by a network administrator to monitor a network and find potential security problems. It can also be used by a hacker to access privileged information that is sent un-encrypted through the network.
Which features are typical for most protocol analyzers?
Packet filters may be applied to incoming data before capture, or to store data after capture. Decodes may be applied to packets in the trace buffer. Alarms may be set to flag unusual network events or conditions. Packet filters display various statistical reports and graphs based on traffic analysis.
A network administrator needs to restrict access to the network Which type of firewall allows only those packets that are part of a known connection?
The firewall that only allows packets of registered connection is called packet filter. It is also the central piece in firewalling.
Filters decide whether to allow or block packets based on information in the protocol headers?
Stateless Packet Filters
What is an IP packet?
An IP packet is a network data packet using Internet Protocol (IP) format.
Compare between static packet filters dynamic packet filter and proxy-based firewall in relation to security?
Nitrogen
